ldp.html
author sspeiche
Fri, 28 Feb 2014 16:53:05 -0500
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parent 505 7c9fc6642481
child 508 f67d8f5f458b
permissions -rw-r--r--
Split out different kinds of LDPCs into their own subsection
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<!DOCTYPE html>
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<!-- 
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	TODO: Search for them within this document.
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	TODO: Once companion documents (best practices, primer) have URLs, link to them.  Search on "companion".
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    TODO: Consider how to not have to explicitly list parent classes.
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    TODO: Improve LDPC intro by explaining simply that LDP-DC restricts LDPC and LDP-BC restricts LDP-DC.
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	TODO: Add new "discovery of server capabilities" non-norm section
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    TODO: Missing namespace definition clause?
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    TODO: 6.2.2 -- consider 6.2.2.1 rules LDP-DC MUST BE a LDPC, ... to deal with inferencing
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    TODO: Consider folding LDP Clients section, feels a bit out of place
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<html>
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  <head>
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    <title>Linked Data Platform 1.0</title>
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    <meta http-equiv='Content-Type' content='text/html;charset=utf-8'/>
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    <!-- 
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      === NOTA BENE ===
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      For the three scripts below, if your spec resides on dev.w3 you can check them
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      out in the same tree and use relative links so that they'll work offline,
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     -->
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    <script src='https://www.w3.org/Tools/respec/respec-w3c-common' class='remove' async></script> 
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    <script class='remove'>
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      var respecConfig = {
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          // specification status (e.g. WD, LCWD, NOTE, etc.). If in doubt use ED.
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          specStatus:           "ED",
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          // the specification's short name, as in http://www.w3.org/TR/short-name/
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          shortName:            "ldp",
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          // if your specification has a subtitle that goes below the main
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          // formal title, define it here
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          // subtitle   :  "an excellent document",
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          // if you wish the publication date to be other than today, set this
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          publishDate:  "",
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          // if the specification's copyright date is a range of years, specify
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          // the start date here:
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          // copyrightStart: "2005"
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          // if there is a previously published draft, uncomment this and set its YYYY-MM-DD date
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          // and its maturity status
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          previousPublishDate:  "2013-07-30",
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          previousMaturity:  	"LC",
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          previousURI: 			"http://www.w3.org/TR/2013/WD-ldp-20130730/",
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          // if there a publicly available Editor's Draft, this is the link
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          edDraftURI:           "http://www.w3.org/2012/ldp/hg/ldp.html",
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          // if this is a LCWD, uncomment and set the end of its review period
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          lcEnd: "2013-09-02",
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          // Only include h1 and h2 level
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          maxTocLevel: 2,
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          // if you want to have extra CSS, append them to this list
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          // it is recommended that the respec.css stylesheet be kept
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          //extraCSS:             ["https://dvcs.w3.org/hg/ldpwg/css/respec.css"],
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          // editors, add as many as you like
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          // only "name" is required
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          editors:  [
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              { name: "Steve Speicher", url: "http://stevespeicher.blogspot.com",
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                company: "IBM Corporation", companyURL: "http://ibm.com/" },
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              { name: "John Arwe", url: "https://www.ibm.com/developerworks/mydeveloperworks/groups/service/html/allcommunities?userid=120000CAW7",
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                company: "IBM Corporation", companyURL: "http://ibm.com/" },
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			  {name: "Ashok Malhotra", url: "mailto:ashok.malhotra@oracle.com",
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			    company: "Oracle Corporation", companyURL: "http://www.oracle.com" },
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          ],
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          // authors, add as many as you like. 
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          // This is optional, uncomment if you have authors as well as editors.
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          // only "name" is required. Same format as editors.
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          //authors:  [
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          //    { name: "Your Name", url: "http://example.org/",
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          //      company: "Your Company", companyURL: "http://example.com/" },
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          //],
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          // name of the WG
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          wg:           "Linked Data Platform Working Group",
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          // URI of the public WG page
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          wgURI:        "http://www.w3.org/2012/ldp",
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          // name (without the @w3c.org) of the public mailing to which comments are due
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          wgPublicList: "public-ldp-comments",
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          // URI of the patent status for this WG, for Rec-track documents
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          // !!!! IMPORTANT !!!!
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          // This is important for Rec-track documents, do not copy a patent URI from a random
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          // document unless you know what you're doing. If in doubt ask your friendly neighbourhood
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          // Team Contact.
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          wgPatentURI:  "http://www.w3.org/2004/01/pp-impl/55082/status",
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          doRDFa: "1.1",
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			localBiblio:  {
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				"HTTPBIS-SEMANTICS": {
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					title:    "Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content"
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				,   href:     "http://tools.ietf.org/html/draft-ietf-httpbis-p2-semantics/"
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				,   authors:  [
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						"R. Fielding"
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					,   "J. Reschke"
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					]
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				,   status:   "In Last Call"
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				,   publisher:  "IETF"
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				},
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				"RFC2817": {
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					title:    "Upgrading to TLS Within HTTP/1.1"
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				,   href:     "http://tools.ietf.org/html/rfc2817"
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				,   authors:  [
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						"R. Khare"
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					,   "S. Lawrence"
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					]
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				,   status:   "Proposed Standard"
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				,   publisher:  "IETF"
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				},
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				"RFC5005": {
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					title:    "Feed Paging and Archiving"
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				,   href:     "http://tools.ietf.org/html/rfc5005"
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				,   authors:  [
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						"M. Nottingham"
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					]
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				,   status:   "Proposed Standard"
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				,   publisher:  "IETF"
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				},
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				"LDP-PAGING": {
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					title:    "Linked Data Platform Paging"
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				,   href:     "https://dvcs.w3.org/hg/ldpwg/raw-file/default/ldp.html"
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				,   authors:  [
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						"S. Speicher", "J. Arwe", "A. Malhotra"
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					]
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				,   status:   "Editor's Working Draft"
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				,   publisher:  "W3C"
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				},
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			},
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      };
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    </script>
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    <style type="text/css">
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    	div.rule {padding-top: 1em;}
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    	div.ldp-issue-open {
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	    	border-color: #E05252;
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			background: #FBE9E9;
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			padding: 0.5em;
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			margin: 1em 0;
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			position: relative;
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			clear: both;
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			border-left-width: .5em;
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			border-left-style: solid;
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    	}
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    	div.ldp-issue-pending {
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	    	border-color: #FAF602;
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			background: #F7F6BC;
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			padding: 0.5em;
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			margin: 1em 0;
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			position: relative;
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			clear: both;
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			border-left-width: .5em;
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			border-left-style: solid;
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    	}
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    	div.ldp-issue-closed {
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	    	border-color: #009900;
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			background: #BCF7CF;
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			padding: 0.5em;
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			margin: 1em 0;
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			position: relative;
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			clear: both;
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			border-left-width: .5em;
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			border-left-style: solid;
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    	}
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    	div.ldp-issue-title {
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    	    color: #E05252;
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    	    padding-right: 1em;
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            min-width: 7.5em;
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    	}
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		.atrisk {
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			padding:    1em;
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			margin: 1em 0em 0em;
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			border: 1px solid #f00;
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			background: #ffc;
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		}
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		.atrisktext {
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			/* content:    "Feature At Risk"; */
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			display:    block;
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			width:  150px;
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			margin: -1.5em 0 0.5em 0;
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			font-weight:    bold;
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			border: 1px solid #f00;
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			background: #fff;
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			padding:    3px 1em;
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		}
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		.normal { 
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			font-weight: normal;
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			font: normal 100% sans-serif;
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		}
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		.indented { 
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			margin-left: +3em;
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		}
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		tr:nth-of-type(odd),.oddrow { 
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			background:#F2F2F2; /* light grey, just enough to differentiate from white */
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		}
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		td { 
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			padding:0 +1ex 0 +1ex; /* add a bit of space from rule/edge to text */
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		}
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    </style>
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    <style type="text/css" media="all">
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    	code {
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    	    font-weight:bold;
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			font-size:larger;
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    	}
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		 /* ReSpec uses color ff4500 for code elements, which does not print well on some black & white printers
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		    and is a little hard to read for some folks even on-line. 
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			The default code font size was also somewhat too small/hard to read.
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		*/
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    </style>
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  </head>
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<body>
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<section id='abstract'>
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This document describes a set of best practices and simple approach for a read-write Linked Data architecture, based on
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HTTP access to web resources that describe their state using the <abbr title="Resource Description Framework">RDF</abbr>
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data model.
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</section>
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<section class="informative" id="intro">
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<h1>Introduction</h1>
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	<p>This specification describes the use
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	of HTTP for accessing, updating, creating and deleting resources from
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	servers that expose their resources as Linked Data.  It provides clarifications
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	and extensions of the rules of Linked Data [[LINKED-DATA]]:</p>
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	<ol>
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		<li>Use URIs as names for things</li>
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		<li>Use HTTP URIs so that people can look up those names</li>
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		<li>When someone looks up a URI, provide useful information, using the standards
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			(RDF*, <abbr title="SPARQL Protocol and RDF Query Language">SPARQL</abbr>)
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		</li>
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		<li>Include links to other URIs, so that they can discover more things</li>
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	</ol>
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	<p>This specification discusses standard HTTP and RDF techniques  
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	used when constructing clients and servers that 
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	create, read, and write <a title="Linked Data Platform Resource">Linked Data Platform Resources</a>.
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	A companion document discusses best practices that you 
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	should use, and anti-patterns you should avoid, when constructing these clients and servers.
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	</p> 
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	<p>This specification defines a special type of <a>Linked Data Platform Resource</a>: a 
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	<a title="Linked Data Platform Container">Container</a>.  Containers are very useful 
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	in building application models involving collections of resources, often homogeneous ones. 
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	For example, universities offer a collection of classes 
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	and have a collection of faculty members, each faculty member teaches a collection of courses, and so on. 
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	This specification discusses how to work with containers.  Resources can be added to containers  
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	using standard HTTP operations like 
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	POST (see <a href="#ldpc-HTTP_POST" class="sectionRef"></a>).</p>
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	<p>The intention of this specification is to enable additional rules and layered groupings of rules as 
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	additional specifications.  The scope is intentionally narrow to provide a set of key rules for 
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	reading and writing Linked Data that most, if not all, other specifications will depend upon and 
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	implementations will support.</p>
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	<p>This specification provides some approaches to deal with large resources.  An extension to this specification
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	provides the ability to break large resource representations into multiple paged responses [[LDP-PAGING]].</p>
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	<p>For context and background, it could be useful to read <a href="#bib-LDP-UCR">Linked Data Platform Use Case and Requirements</a> [[LDP-UCR]] 
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	and <a href="#base-specs" class="sectionRef"></a>.</p>
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</section>
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<section id="terms">
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<h1>Terminology</h1>
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<p>Terminology is based on W3C's Architecture of the World Wide Web [[WEBARCH]] and Hyper-text Transfer Protocol [[HTTP11]].
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</p>
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  <dl class="glossary">
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	<dt>Link</dt>
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	<dd>A relationship between two resources when one resource (representation) refers to the other resource by means
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		of a URI [[WEBARCH]].
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		<p></p></dd>
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	<dt>Linked Data</dt>
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	<dd>As defined by Tim Berners-Lee [[LINKED-DATA]].<p></p></dd>
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	<dt>Client</dt>
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	<dd>A program that establishes connections for the purpose of sending requests [[HTTP11]].<p></p></dd>
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	<dt>Server</dt>
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	<dd>An application
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		program that accepts connections in order to service requests by
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		sending back responses. 
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		<p>Any given program may be capable of being
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		both a client and a server; our use of these terms refers only to
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		the role being performed by the program for a particular
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		connection, rather than to the program's capabilities in general.
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		Likewise, any server may act as an origin server, proxy, gateway,
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		or tunnel, switching behavior based on the nature of each request
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		[[HTTP11]]. </p></dd>
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	<dt><dfn>Linked Data Platform Resource</dfn> (<abbr title="Linked Data Platform Resource">LDPR</abbr>)</dt>
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	<dd>A HTTP resource whose state is represented in any way that conforms to the simple lifecycle
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		patterns and conventions in <a href="#ldpr" class="sectionRef"></a>.<p></p></dd>
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	<dt><dfn>Linked Data Platform RDF Source</dfn> (<abbr title="Linked Data Platform RDF Source">LDP-RS</abbr>)</dt>
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	<dd>An <a title="Linked Data Platform Resource">LDPR</a> whose state is fully represented in RDF, corresponding to
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	an RDF <a href="http://www.w3.org/TR/rdf11-concepts/#dfn-named-graph">named graph</a>. See also the term
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	<a href="http://www.w3.org/TR/rdf11-concepts/#dfn-rdf-source">RDF Source</a> from [[!rdf11-concepts]].
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	<p></p></dd>	
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	<dt><dfn>Linked Data Platform Non-RDF Source</dfn> (<abbr title="Linked Data Platform Non-RDF Source">LDP-NR</abbr>)</dt>
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	<dd>A <a title="Linked Data Platform Resource">LDPR</a> whose state is <em>not</em> represented in RDF.
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	These are binary or text documents that do not have useful RDF representations.
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	<p></p></dd>
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	<dt><dfn>Linked Data Platform Container</dfn> (<abbr title="Linked Data Platform Container">LDPC</abbr>)</dt>
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	<dd>An LDP-RS representing a collection of linked
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	documents (<a href="http://www.w3.org/TR/rdf11-concepts/#dfn-rdf-document">RDF Document</a> [[!rdf11-concepts]] or information resources [[!WEBARCH]])
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	that responds to client requests for creation, modification, and/or enumeration of its linked members and documents, 
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	and that conforms to the simple lifecycle
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	patterns and conventions in <a href="#ldpc" class="sectionRef"></a>.
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	<p></p></dd>
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	<dt><dfn>Linked Data Platform Basic Container</dfn> (<abbr title="Linked Data Platform Basic Container">LDP-BC</abbr>)</dt>
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	<dd>A <a title="Linked Data Platform Container">LDPC</a> that defines a simple link to both
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	its <a title="Containment">contained</a> documents (information resources) [[!WEBARCH]].
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	<p></p></dd>
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	<dt><dfn>Linked Data Platform Direct Container</dfn> (<abbr title="Linked Data Platform Direct Container">LDP-DC</abbr>)</dt>
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	<dd>A <a title="Linked Data Platform Container">LDPC</a> adds the concept <a title="Membership">membership</a>, allows the flexibility of choosing what form its 
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	<a title="Membership triples">membership triples</a> take, and allows <a title="Membership">members</a> to be 
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	any resources [[!WEBARCH]], not only documents.
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	<p></p></dd>
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	<dt><dfn>Linked Data Platform Indirect Container</dfn> (<abbr title="Linked Data Platform Indirect Container">LDP-IC</abbr>)</dt>
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	<dd>A <a title="Linked Data Platform Container">LDPC</a> that is similar to a <a title="Linked Data Platform Direct Container">LDP-DC</a>
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	and is capable of having <a title="Membership">members</a> whose URIs are based
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	on the content of its <a title="Containment">contained</a> documents rather than the URIs assigned to those documents.
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	<p></p></dd>
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	<dt><dfn>Membership</dfn></dt>
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	<dd>The relationship linking a LDP-RS (LDPCs are also LDP-RSs) and its member LDPRs.  
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	There often is a linked LDPC that assists with managing the member LDPRs.<p></p></dd>
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	<dt><dfn>Membership triples</dfn></dt>
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	<dd>A set of triples in a LDP-RS's state that lists its members.
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		A LDP-RS's membership triples all have one of the following patterns:
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		<table class="indented">
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		<tr>
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		<td style="background:#DDDDDD"> <var>membership-constant-URI</var> </td>
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		<td style="background:#FFFFFF"> <var>membership-predicate</var> </td>
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		<td style="background:#CCFFFF"> <var>member-derived-URI</var> </td>
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		</tr>
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		<tr>
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		<td style="background:#CCFFFF"> <var>member-derived-URI</var> </td>
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		<td style="background:#FFFFFF"> <var>membership-predicate</var> </td>
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		<td style="background:#DDDDDD"> <var>membership-constant-URI</var> </td>
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		</tr>
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		</table>
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		The difference between the two is simply which position member-derived-URI occupies, which is usually
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		driven by the choice of <var>membership-predicate</var>.  Most predicates have a natural forward direction
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		inherent in their name, and existing vocabularies contain useful examples that read naturally in
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		each direction.  <code>ldp:member</code> and <code>dcterms:isPartOf</code> are representative examples.
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		<p>
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		Each linked container exposes properties (see <a href="#ldpc-general" class="sectionRef"></a>)
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		that allow clients to determine which pattern it
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		uses, what the actual <var>membership-predicate</var> and <var>membership-constant-URI</var> values are, 
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		and (for containers that allow the creation of new members) what value is used
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		for the <var>member-derived-URI</var> based on the client's input to the 
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		creation process.</p>
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	<p></p></dd>
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	<dt><dfn>Membership predicate</dfn></dt>
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	<dd>The predicate of all a LDP-RS's <a title="Membership triples">membership triples</a>.
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	<p></p></dd>
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	<dt><dfn>Containment</dfn></dt>
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	<dd>The relationship binding an LDPC to LDPRs whose lifecycle it controls and is aware of.  The
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	lifecycle of the contained LDPR is limited by the lifecycle of the containing LDPC;
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	that is, a contained LDPR cannot be created (through LDP-defined means) before its containing LDPC exists.
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	<p></p></dd>
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	<dt><dfn>Containment triples</dfn></dt>
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	<dd>
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	A set of triples in an LDPC's state, maintained by the LDPC, that lists documents created by the LDPC but not yet deleted.
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	These triples <strong>always</strong> have the form: <var>( LDPC URI, ldp:contains , document-URI )</var>.
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	<p></p></dd>
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	<dt><dfn>Empty-container triples</dfn></dt>
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	<dd>
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	The portion of an LDPC's state that would be present when the container is empty.  Currently, this definition
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	is equivalent to all the LDPC's triples minus its containment triples and minus its membership
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	triples, but if future versions of LDP define additional classes of triples then this definition
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	would expand to subtract out those classes as well.
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	<p></p></dd>
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  </dl>
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<section id="conventions">
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<h2>Conventions Used in This Document</h2>
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	<p>Sample resource representations are provided in <code>text/turtle</code>
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		format [[turtle]].</p>
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	<p>Commonly used namespace prefixes:</p>
93
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	<pre style="word-wrap: break-word; white-space: pre-wrap;">	@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
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	@prefix foaf:     &lt;http://xmlns.com/foaf/0.1/&gt;.
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	@prefix rdf:     &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;.
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	@prefix ldp:     &lt;http://www.w3.org/ns/ldp#&gt;.
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	@prefix xsd:     &lt;http://www.w3.org/2001/XMLSchema#&gt;.</pre>
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</section>
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</section>
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<section id='conformance'>
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diff changeset
   403
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<p>The status of the sections of Linked Data Platform 1.0 (this document) is as follows:</p>
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<ul>
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  <li>1. Introduction: <b>non-normative</b></li>
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  <li>2. Terminology: <b>normative</b></li>
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  <li>3. Conformance: <b>normative</b></li>
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   409
  <!-- TODO: section numbering is OFF - LDP clients -->
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  <li>4. Linked Data Platform Resources: <b>normative</b></li>
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
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  <li>5. Linked Data Platform Containers: <b>normative</b></li>
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  <li>6. HTTP Header Definitions: <b>normative</b></li>
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  <li>A. Acknowledgements: <b>non-normative</b></li> 
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  <li>B.1 Normative references: <b>normative</b></li>
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  <li>B.2 Non-normative references: <b>non-normative</b></li>
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</ul>
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diff changeset
   417
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f7f6d5fe3313 Fix up conformance section to use new LDP client section
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<p>A conforming <b><dfn>LDP client</dfn></b> is a conforming HTTP client [[!HTTP11]] that follows the rules defined by LDP in
372
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<a href="#ldpclient" class="sectionRef"></a>.
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</p>
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f7f6d5fe3313 Fix up conformance section to use new LDP client section
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<p>A conforming <b><dfn>LDP server</dfn></b> is a conforming HTTP server [[!HTTP11]] that follows the rules defined by LDP in 
372
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<a href="#ldpr" class="sectionRef"></a> when it is serving LDPRs, and also
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
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   424
<a href="#ldpc" class="sectionRef"></a> when it is serving LDPCs.
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LDP does not constrain its behavior when serving other HTTP resources.
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</p>
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</section>
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   428
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<section id="ldpclient">
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<h1>Linked Data Platform Clients</h1>
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<p>All of the following are conformance rules for <a title="LDP client">LDP Clients</a>.
435
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</p>
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<section><h2>General</h2>
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435
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	<section id="ldp-cli-multitype"><h2 class="normal">In the absence of special knowledge of the application or domain, 
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a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
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		<a title="LDP client">LDP clients</a> MUST assume that any LDP-RS can have multiple values for <code>rdf:type</code>.
435
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	</h2></section> <!-- Was 4.3.5 / #ldpr-4_3_5 -->
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	<section id="ldpr-cli-typeschange"><h2 class="normal">In the absence of special knowledge of the application or domain, 
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   440
		<a title="LDP client">LDP clients</a> MUST assume that the <code>rdf:type</code> values
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
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   441
		of a given LDP-RS can change over time.
435
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	</h2></section> <!-- Was 4.3.6 / #ldpr-4_3_6 -->
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   443
	
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	<section id="ldpr-cli-openpreds"><h2 class="normal"><a title="LDP client">LDP clients</a> SHOULD always assume that the set of predicates for a
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
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   445
		LDP-RS of a particular type at an arbitrary server is open, in the
435
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   446
		sense that different resources of the same type may not all have the
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
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   447
		same set of predicates in their triples, and the set of predicates that
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
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parents: 488
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   448
		are used in the state of any one LDP-RS is not limited to any pre-defined
435
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   449
		set.
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   450
	</h2></section> <!-- Was 4.5.3 / #ldpr-ldpr-4_5_3 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
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   451
	
466
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
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parents: 465
diff changeset
   452
	<section id="ldpr-cli-preservetriples"><h2 class="normal">
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
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parents: 488
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   453
		A <a title="LDP client">LDP client</a> MUST preserve all triples retrieved from an LDP-RS using HTTP <code>GET</code> that
435
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   454
		it doesn’t change whether it understands the predicates or not, when
486
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   455
		its intent is to perform an update using HTTP <code>PUT</code>.  The use of HTTP
435
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   456
		<code>PATCH</code> instead of HTTP <code>PUT</code> for update avoids this burden for clients
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   457
		[[RFC5789]].
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   458
	</h2></section> <!-- Was 4.5.5 / #ldpr-ldpr-4_5_5 -->
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parents: 469
diff changeset
   459
	
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   460
	<section id="ldpr-cli-can-hint"><h2 class="normal">
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
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parents: 469
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   461
		<a title="LDP client">LDP clients</a> MAY 
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
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parents: 469
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   462
		provide LDP-defined hints that allow servers to optimize the content of responses.
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
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diff changeset
   463
		<a href="#prefer-parameters" class="sectionRef"></a> defines hints that apply to 
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
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diff changeset
   464
		<a title="Linked Data Platform RDF Source">LDP-RSs</a>.
470
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
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parents: 469
diff changeset
   465
	</h2></section> 
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
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parents: 469
diff changeset
   466
	
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
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diff changeset
   467
	<section id="ldpr-cli-hints-ignorable"><h2 class="normal">
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
   468
		<a title="LDP client">LDP clients</a> MUST 
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
   469
		be capable of processing responses formed by an LDP server that ignores hints,
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
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parents: 469
diff changeset
   470
		including LDP-defined hints.
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
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parents: 505
diff changeset
   471
	</h2></section>
497
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parents: 496
diff changeset
   472
	
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   473
	<section id="ldpr-cli-paging"><h2 class="normal">
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
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parents: 496
diff changeset
   474
	<div class="atrisk" id="atrisk-paging"><p class="atrisktext">Feature At Risk</p>
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
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parents: 496
diff changeset
   475
	<p>The LDP Working Group proposes incorporation of the following clause to make LDP clients paging aware:</p>
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
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parents: 496
diff changeset
   476
		<a title="LDP client">LDP clients</a> SHOULD 
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   477
		be capable of processing successful HTTP <code>GET</code> responses formed by an LDP server
498
9ab1339e0013 Simple grammatical cleanup and improved wording
sspeiche
parents: 497
diff changeset
   478
		that independently initiated paging, returning a page of representation instead of full resource
9ab1339e0013 Simple grammatical cleanup and improved wording
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parents: 497
diff changeset
   479
		representation [[!LDP-PAGING]].
497
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
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parents: 496
diff changeset
   480
	</div></h2>
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
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parents: 496
diff changeset
   481
	</section> 
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
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parents: 496
diff changeset
   482
470
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
   483
	
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
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   484
</section>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
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   485
</section> <!-- Client constraints -->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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diff changeset
   486
333
3c2aaaea1f73 Fixed vanishing section ref problem
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diff changeset
   487
<section id="ldpr">
3c2aaaea1f73 Fixed vanishing section ref problem
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diff changeset
   488
<h1>Linked Data Platform Resources</h1>
222
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sspeiche
parents: 221
diff changeset
   489
333
3c2aaaea1f73 Fixed vanishing section ref problem
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diff changeset
   490
<section class="informative" id="ldpr-informative">
466
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
   491
<h2>Introduction</h2>
33
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
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parents: 21
diff changeset
   492
	<p>Linked Data Platform Resources (<dfn><abbr title="Linked Data Platform Resources">LDPRs</abbr></dfn>) are HTTP resources
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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diff changeset
   493
		that conform to the simple patterns and conventions in this section.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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diff changeset
   494
		HTTP requests to access, modify, create or delete LDPRs are accepted
372
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John Arwe
parents: 370
diff changeset
   495
		and processed by <a title="LDP server">LDP servers</a>. Most LDPRs are domain-specific resources
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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   496
		that contain data for an entity in some domain, which could be
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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diff changeset
   497
		commercial, governmental, scientific, religious, or other.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   498
	<p>Some of the rules defined in this document provide
33
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
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parents: 21
diff changeset
   499
		clarification and refinement of the base Linked Data rules [[LINKED-DATA]];
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   500
		others address additional needs.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   501
	<p>The rules for Linked Data Platform Resources address basic
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   502
		questions such as:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   503
	<ul>
231
38d1a7faf1c4 Various editorial comments from PA
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   504
		<li>What resource representations should be used?</li>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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diff changeset
   505
		<li>How is optimistic collision detection handled for updates?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   506
		<li>What should client expectations be for changes to linked-to resources,
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   507
				such as type changes?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   508
		<li>What can servers do to ease the burden of constraints for resource
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   509
				creation?</li>
464
77fd28c9eb94 action-127 use tag [23]xx status code for paging; also change paging to be for LDP-RRs as a consequence of issue-89 vocab changes
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diff changeset
   510
		<li>How	do I GET the representation of a large resource broken up into pages?</li>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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diff changeset
   511
	</ul>
463
ae72388dbb82 start action-127 paging use of [23]xx response code; also changed 'informative' to 'non-normative' so sandro is happy[ier]
John Arwe
parents: 462
diff changeset
   512
	<p>Additional non-normative guidance is available in the <a
439
28beff0a4f89 Updated reference to LDP BPG editor's draft and added ref to LDP-UCR
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parents: 438
diff changeset
   513
			href="https://dvcs.w3.org/hg/ldpwg/raw-file/default/ldp-bp/ldp-bp.html"
28beff0a4f89 Updated reference to LDP BPG editor's draft and added ref to LDP-UCR
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diff changeset
   514
			class="external"
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diff changeset
   515
			title="LDP Best Practices and Guidelines"
28beff0a4f89 Updated reference to LDP BPG editor's draft and added ref to LDP-UCR
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parents: 438
diff changeset
   516
			rel="nofollow">LDP Best Practices and Guidelines editor's draft</a> that addresses
37
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   517
		questions such as:</p>
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   518
	<ul>
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   519
		<li>What literal value types should be used?</li>
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   520
		<li>Are there some typical vocabularies that should be reused?</li>
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   521
	</ul>
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   522
	<p>The following sections define the conformance rules for LDP servers when serving LDPRs.
497
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   523
	Companion non-normative documents describe additional guidelines for use when interacting with LDPRs. 
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   524
	</p>
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   525
	<p>LDP-RS's representations may be too big, one strategy is to break up the response representation
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   526
	into client consumable chunks called pages. A separate LDP specification outlines the conformance
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   527
	rules around pagination [[LDP-PAGING]].
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   528
	</p>
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   529
	<p>An LDP server manages two kinds of <a title="Linked Data Platform Resources">LDPRs</a>, those resources who whose state 
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   530
	is represented using RDF (LDP-RS) and those using other formats (LDP-NR).  LDP-RSs have the unique
461
64c0ca32c9e6 Cleanup from Action-123 add LDPR-RR and LDPR-BR
John Arwe
parents: 460
diff changeset
   531
	quality that their representation is based on RDF, which addresses a number of use cases from web metadata, open data 
496
94420c5678ae Reference cleanup and tweak LDP-RS term
sspeiche
parents: 495
diff changeset
   532
	models, machine processable information, and automated processing by software agents [[!rdf11-concepts]].  LDP-NRs are almost anything
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   533
	on the Web today: images, HTML pages, word processing documents, spreadsheets, etc. and LDP-RSs hold 
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   534
	metadata associated with LDP-NRs in some cases.
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   535
	</p>
451
f68e4a59fba1 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 450
diff changeset
   536
    <figure id="fig-ldpr-types">
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   537
        <img src="images/ldpr1.png" alt="Sample separation of Linked Data Platform Resource" />
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   538
        <figcaption>Samples of different types of LDPRs</figcaption>
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   539
    </figure>
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   540
    <p>The LDP-NRs and LDP-RSs are simply sub-types of LDPRs, as illustrated in <a href="#fig-ldpr-class"></a>.</p>  
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   541
    <figure id="fig-ldpr-class">
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   542
       <img src="images/ldpr2.png" alt="Class Diagram of Linked Data Platform Resource" />
491
16d872a712b6 Adopted container hierarchy and merged Indirect Container into Container
sspeiche
parents: 489
diff changeset
   543
       <figcaption>Class relationship of types of Linked Data Platform Resources</figcaption>
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   544
     </figure>
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   545
	
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   546
</section>
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   547
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   548
<section id="ldpr-general">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   549
<h2>General</h2>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   550
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   551
	<section id="ldpr-gen-http"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST at least be HTTP/1.1 conformant servers [[!HTTP11]].
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   552
	</h2></section><!-- Was 4.2.1 / #ldpr-4_2_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   553
	
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   554
	<section id="ldpr-gen-rdf"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST provide an RDF representation for <a title="Linked Data Platform RDF Source">LDP-RSs</a>. 
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   555
	The HTTP <code>Request-URI</code> of the LDP-RS is typically the subject of most triples in the response.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   556
	</h2></section><!-- Was 4.2.2 / #ldpr-4_2_2 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   557
	
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   558
	<section id="ldpr-gen-binary"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY host a mixture of LDPRs, <a title="Linked Data Platform RDF Source">LDP-RSs</a>
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   559
	and <a title="Linked Data Platform Non-RDF Source">LDP-NRs</a>. For example, it
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   560
		is common for <a title="LDP server">LDP servers</a> to need to host binary or text resources
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   561
		that do not have useful RDF representations.</h2></section><!-- Was 4.2.3 / #ldpr-4_2_3 -->
69
0f9825dea52b Updating some simple formatting, reorganizing open issues and todos
sspeiche
parents: 68
diff changeset
   562
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   563
	<section id="ldpr-gen-reusevocab"><h2 class="normal"><a title="Linked Data Platform RDF Source">LDP-RSs</a> SHOULD reuse existing vocabularies instead of creating
33
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
John Arwe <johnarwe@us.ibm.com>
parents: 21
diff changeset
   564
		their own duplicate vocabulary terms.  In addition to this general rule, some specific cases are
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
John Arwe <johnarwe@us.ibm.com>
parents: 21
diff changeset
   565
		covered by other conformance rules.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   566
	</h2></section><!-- Was 4.2.4 / #ldpr-4_2_4 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   567
	
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   568
	<section id="ldpr-gen-reusevocabsuchas"><h2 class="normal"><a title="Linked Data Platform RDF Source">LDP-RSs</a> predicates SHOULD use standard vocabularies such as Dublin Core
497
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   569
		[[!DC-TERMS]], RDF [[!rdf11-concepts]] and RDF Schema [[!rdf-schema]], whenever
33
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
John Arwe <johnarwe@us.ibm.com>
parents: 21
diff changeset
   570
		possible.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   571
	</h2></section><!-- Was 4.2.4.1 / #ldpr-4_2_4_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   572
	
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   573
	<section id="ldpr-gen-atleast1rdftype"><h2 class="normal"><a title="Linked Data Platform RDF Source">LDP-RSs</a> representations SHOULD have at least one <code>rdf:type</code>
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   574
		set explicitly.  This makes the representations much more useful to
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   575
		client applications that don’t support inferencing.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   576
	</h2></section><!-- Was 4.2.5 / #ldpr-4_2_5 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   577
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   578
	<section id="ldpr-gen-etags"><h2 class="normal"><a title="LDP server">LDP server</a> responses MUST use entity tags (either 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   579
		weak or strong ones) as response <code>ETag</code> header values.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   580
	</h2></section><!-- Was 4.2.8 / #ldpr-4_2_8 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   581
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   582
	<section id="ldpr-gen-linktypehdr"><h2 class="normal"><a title="LDP server">LDP servers</a>
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   583
		exposing LDPRs 
149
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   584
		MUST advertise their LDP support by exposing a HTTP <code>Link</code> header
454
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
   585
		with a target URI of <code>http://www.w3.org/ns/ldp#Resource</code>, and
402
935e1e08d2bb Fix some typos around paging, move to single quotes for link relations per 5988
John Arwe
parents: 395
diff changeset
   586
		a link relation type of <code>type</code> (that is, <code>rel='type'</code>)
149
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   587
		in all responses to requests made 
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   588
		to the LDPR's HTTP <code>Request-URI</code>. 
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   589
	</h2></section><!-- Was 4.2.10 / #ldpr-4_2_10 -->
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   590
	<blockquote>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   591
		<p>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   592
		Note: 
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   593
		The HTTP <code>Link</code> header is the method by which servers assert their support for the LDP specification 
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   594
		on a specific resource in a way that clients can inspect dynamically at run-time.   
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   595
		This is <strong>not</strong> equivalent to the
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   596
		presence of a <var>(subject-URI, <code>rdf:type</code>, <code>ldp:Resource</code>)</var> triple in an LDP-RS.
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   597
		The presence of this header asserts that the server complies with the LDP specification's constraints on 
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   598
		HTTP interactions with LDPRs, that is
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   599
		it asserts that the resource <a href="#ldpr-gen-tags">has Etags</a>, <a href="#ldpr-gen-rdf">has an RDF representation</a>, and so on,
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   600
		which is not true of all Web resources served as RDF media types.
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   601
		</p>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   602
		<p>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   603
		Note: 
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   604
		<a href="#ldpr-gen-binary">A LDP server can host a mixture of LDPRs and other resources</a>, and therefore there is no implication
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   605
		that LDP support advertised on one HTTP <code>Request-URI</code> means that other 
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   606
		resources on the same server are also LDPRs.  Each HTTP <code>Request-URI</code> needs to be 
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   607
		individually inspected, in the absence of outside information.
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   608
		</p>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   609
	</blockquote>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   610
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   611
	<section id="ldpr-gen-noinferencing"><h2 class="normal"><a title="LDP server">LDP servers</a>
152
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   612
		MUST NOT require LDP clients to implement inferencing in order to recognize the subset
215
da72115eb40b Various updates per review of Raul
sspeiche
parents: 213
diff changeset
   613
		of content defined by LDP.  Other specifications built on top of LDP may require clients
497
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   614
		to implement inferencing [[!rdf11-concepts]].  The practical implication is that all content defined by LDP
152
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   615
		must be explicitly represented. 
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   616
	</h2></section><!-- Was 4.2.11 / #ldpr-4_2_11 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   617
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   618
	<section id="ldpr-gen-defbaseuri"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST assign the default 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   619
		base-URI for [[!RFC3987]] relative-URI resolution to be the HTTP 
224
39ca65760446 Removed 5.4.8.1 and added 4.2.12 to better handle base/rel URI
sspeiche
parents: 223
diff changeset
   620
		<code>Request-URI</code> when the resource already exists, and to the URI of the created resource when the request results 
39ca65760446 Removed 5.4.8.1 and added 4.2.12 to better handle base/rel URI
sspeiche
parents: 223
diff changeset
   621
		in the creation of a new resource.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   622
	</h2></section><!-- Was 4.2.12 / #ldpr-4_2_12 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   623
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   624
	<section id="ldpr-gen-pubclireqs"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST 
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   625
		publish any constraints on <a title="LDP client">LDP clients’</a> ability to 
402
935e1e08d2bb Fix some typos around paging, move to single quotes for link relations per 5988
John Arwe
parents: 395
diff changeset
   626
		create or update LDPRs, by adding a Link header with <code>rel='describedby'</code> 
504
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
   627
		[[!RFC5988]] to all responses to requests which fail due to violation of 
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   628
		those constraints.  For example, a server that refuses resource creation 
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   629
		requests via HTTP PUT, POST, or PATCH would return this <code>Link</code> header on its 
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   630
		4xx responses to such requests.
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   631
		The same <code>Link</code> header MAY be provided on other responses.  LDP neither 
504
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
   632
		defines nor constrains the representation of the link's target resource.  Natural language 
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
   633
		constraint documents are therefore permitted, 
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   634
		although machine-readable ones facilitate better client interactions.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   635
	</h2></section><!-- Was 4.2.13 / #ldpr-4_2_13 -->
152
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   636
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   637
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   638
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   639
<section id="ldpr-HTTP_GET">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   640
<h2>HTTP GET</h2>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   641
	<section id="ldpr-get-must"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST support the HTTP <code>GET</code> Method for LDPRs.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   642
	</h2></section><!-- Was 4.3.1 / #ldpr-4_3_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   643
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   644
	<section id="ldpr-get-options"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST support the HTTP response headers defined in 
228
ec118c66c122 Moved 4.7.2 (from HEAD) to 4.3.2 (GET), shifted rest of GET section by one
sspeiche
parents: 227
diff changeset
   645
		<a href="#ldpr-HTTP_OPTIONS" class="sectionRef"></a>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   646
	</h2></section><!-- Was 4.3.2 / #ldpr-4_3_2 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   647
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   648
	<section id="ldpr-get-turtle"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST provide a <code>text/turtle</code>
495
559a77692da5 Fixed up some specref references
sspeiche
parents: 494
diff changeset
   649
		representation of the requested <a title="Linked Data Platform RDF Source">LDP-RS</a> [[!turtle]].
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   650
	</h2></section><!-- Was 4.3.3 / #ldpr-4_3_3 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   651
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   652
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   653
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   654
<section id="ldpr-HTTP_POST">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   655
<h2>HTTP POST</h2>
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   656
	<p>
500
c52f08081c8a Removed rule on PATCH create, as it doesn't add any substantive over RFC5789
sspeiche
parents: 498
diff changeset
   657
		Per [[HTTP11]], this HTTP method is optional and 
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   658
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   659
		When a LDP server chooses to support this method, 
485
195cdbad4852 Updated LDPR Post reference to Put, which had implied that clients could PUT (to an LDPC) to create an LDPR
John Arwe
parents: 484
diff changeset
   660
		this specification imposes no new requirements for LDPRs.
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   661
	</p>
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   662
485
195cdbad4852 Updated LDPR Post reference to Put, which had implied that clients could PUT (to an LDPC) to create an LDPR
John Arwe
parents: 484
diff changeset
   663
	<p>Clients can create LDPRs via <code>POST</code> (<a href="#ldpc-HTTP_POST" class="sectionRef"></a>) to a LDPC, 
195cdbad4852 Updated LDPR Post reference to Put, which had implied that clients could PUT (to an LDPC) to create an LDPR
John Arwe
parents: 484
diff changeset
   664
		via <code>PUT</code> (<a href="#ldpr-HTTP_PUT" class="sectionRef"></a>), or any other methods allowed
195cdbad4852 Updated LDPR Post reference to Put, which had implied that clients could PUT (to an LDPC) to create an LDPR
John Arwe
parents: 484
diff changeset
   665
		for HTTP resources.  Any server-imposed constraints on LDPR creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   666
		<a href="#ldpr-gen-pubclireqs">must be advertised</a> to clients.
480
96f2d9c4a742 Updated LDPC DELETE language and cleanup todos
sspeiche
parents: 479
diff changeset
   667
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   668
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   669
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   670
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   671
<section id="ldpr-HTTP_PUT">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   672
<h2>HTTP PUT</h2>
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   673
	<p>
500
c52f08081c8a Removed rule on PATCH create, as it doesn't add any substantive over RFC5789
sspeiche
parents: 498
diff changeset
   674
		Per [[HTTP11]], this HTTP method is optional and 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   675
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   676
		When a LDP server chooses to support this method, 
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   677
		this specification imposes the following new requirements for LDPRs.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   678
	</p>
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   679
		
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   680
	<p>
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   681
		Any server-imposed constraints on LDPR creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   682
		<a href="#ldpr-gen-pubclireqs">must be advertised</a> to clients.
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   683
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   684
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   685
	<section id="ldpr-put-replaceall"><h2 class="normal">If a HTTP <code>PUT</code> is accepted on an existing resource, 
389
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   686
		<a title="LDP server">LDP servers</a> MUST
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   687
		replace the entire persistent state of the identified resource with
61
2f8a2d58e65c ISSUE-11 - 4.4.1 Relaxed the MUST ignore dc:modified/creator to MAY
sspeiche
parents: 60
diff changeset
   688
		the entity representation in the body of the request. 
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   689
		<a title="LDP server">LDP servers</a> MAY ignore server managed properties such as <code>dcterms:modified</code> 
61
2f8a2d58e65c ISSUE-11 - 4.4.1 Relaxed the MUST ignore dc:modified/creator to MAY
sspeiche
parents: 60
diff changeset
   690
		and <code>dcterms:creator</code> if they are not under
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   691
		client control. Any <a title="LDP server">LDP servers</a> that wish
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   692
		to support a more sophisticated merge of data provided by the client
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   693
		with existing state stored on the server for a resource MUST use HTTP
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   694
		<code>PATCH</code>, not HTTP <code>PUT</code>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   695
	</h2></section><!-- Was 4.5.1 / #ldpr-4_5_1 -->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   696
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   697
	<section id="ldpr-put-servermanagedprops"><h2 class="normal">
389
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   698
		If an otherwise valid HTTP <code>PUT</code> request is received 
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   699
		that attempts to change triples the server does not allow clients to modify, 
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   700
		<a title="LDP server">LDP servers</a> MUST 
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   701
		respond with a 4xx range status code (typically
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   702
		409 Conflict). 
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   703
		<a title="LDP server">LDP servers</a> SHOULD provide a corresponding response body containing
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   704
		information about which triples could not be
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   705
		persisted.
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   706
		The format of the 4xx response body is not constrained by LDP.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   707
	</h2></section><!-- Was 4.5.1.1 / #ldpr-4_5_1_1 -->
389
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   708
	<blockquote>
463
ae72388dbb82 start action-127 paging use of [23]xx response code; also changed 'informative' to 'non-normative' so sandro is happy[ier]
John Arwe
parents: 462
diff changeset
   709
		Non-normative note: Clients might provide triples equivalent to those already in the resource's state,
389
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   710
		e.g. as part of a GET/update representation/PUT sequence, and those PUT requests are intended to work as long as the 
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   711
		server-controlled triples are identical on the GET response and the subsequent PUT request.
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   712
	</blockquote>
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   713
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   714
	<section id="ldpr-put-precond"><h2 class="normal"><a title="LDP client">LDP clients</a> SHOULD use the HTTP <code>If-Match</code>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   715
		header and HTTP <code>ETags</code> to ensure it isn’t
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   716
		modifying a resource that has changed since the client last retrieved
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   717
		its representation. <a title="LDP server">LDP servers</a> SHOULD require the HTTP <code>If-Match</code> header and HTTP <code>ETags</code>
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   718
		to detect collisions. <a title="LDP server">LDP servers</a> MUST respond with status code 412
122
14197f56039e Issue-74 resolution - 428 precondition required
John Arwe
parents: 120
diff changeset
   719
		(Condition Failed) if <code>ETag</code>s fail to match when there are no other
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   720
		errors with the request [[!HTTP11]].  <a title="LDP server">LDP servers</a> that require conditional requests MUST respond with status code 428
122
14197f56039e Issue-74 resolution - 428 precondition required
John Arwe
parents: 120
diff changeset
   721
		(Precondition Required) when the absence of a precondition is the only reason for rejecting the request [[!RFC6585]].
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   722
	</h2></section><!-- Was 4.5.2 / #ldpr-4_5_2 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   723
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   724
	<section id="ldpr-put-failed"><h2 class="normal">
389
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   725
		If an otherwise valid HTTP <code>PUT</code> request is received that contains triples the server 
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   726
		chooses not to persist, e.g. unknown content,
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   727
		<a title="LDP server">LDP servers</a> MUST respond with an appropriate 4xx range status code
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   728
		[[HTTP11]].  
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   729
		<a title="LDP server">LDP servers</a> SHOULD provide a corresponding response body containing
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   730
		information about which triples could not be
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   731
		persisted.
504
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
   732
		The format of the 4xx response body is not constrained by LDP. LDP servers
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
   733
		expose these application-specific constraints as described in <a href="#ldpr-general" class="sectionRef"></a>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   734
	</h2></section><!-- Was 4.5.4 / #ldpr-4_5_4 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   735
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   736
	<section id="ldpr-put-create"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY choose to allow the creation of new resources using HTTP <code>PUT</code>.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   737
	</h2></section><!-- Was 4.5.6 / #ldpr-4_5_6 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   738
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   739
	<section id="ldpr-put-simpleupdate"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD allow clients to update resources without
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   740
		requiring detailed knowledge of server-specific constraints.  
451
f68e4a59fba1 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 450
diff changeset
   741
		This is a consequence of the requirement to enable simple creation and modification of LDPRs.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   742
	</h2></section><!-- Was 4.5.7 / #ldpr-4_5_7 -->	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   743
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   744
		
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   745
<section id="ldpr-HTTP_DELETE">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   746
<h2>HTTP DELETE</h2>
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   747
	<p>
500
c52f08081c8a Removed rule on PATCH create, as it doesn't add any substantive over RFC5789
sspeiche
parents: 498
diff changeset
   748
		Per [[HTTP11]], this HTTP method is optional and 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   749
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   750
		When a LDP server chooses to support this method, 
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   751
		this specification imposes the following new requirements for LDPRs.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   752
	</p>
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   753
		
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   754
	<p>Additional requirements on HTTP <code>DELETE</code> of LDPRs within containers can be found in
466
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
   755
	<a href="#ldpc-HTTP_DELETE" class="sectionRef"></a>.
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
   756
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   757
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   758
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   759
<section id="ldpr-HTTP_HEAD">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   760
<h2>HTTP HEAD</h2>
395
0408e1e5bbf8 ACTION-105: Update spec to reflect 9/30 resolution moving Paging links to HTTP headers (partial: does not include sort criteria changes yet)
John Arwe
parents: 393
diff changeset
   761
	<p>Note that certain LDP mechanisms, such as <a href="#ldpr-Paging">paging</a>, rely on HTTP headers, and HTTP generally requires that
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   762
		<code>HEAD</code> responses include the same headers as <code>GET</code> responses.  
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   763
		Thus, implementers should also carefully read sections <a href="#ldpr-HTTP_GET"></a> 
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   764
		and <a href="#ldpr-HTTP_OPTIONS"></a>.</p>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   765
	<section id="ldpr-head-must"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST support the HTTP <code>HEAD</code> method.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   766
	</h2></section><!-- Was 4.7.1 / #ldpr-4_7_1 -->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   767
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   768
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   769
<section id="ldpr-HTTP_PATCH">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   770
<h2>HTTP PATCH</h2>
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   771
	<p>
500
c52f08081c8a Removed rule on PATCH create, as it doesn't add any substantive over RFC5789
sspeiche
parents: 498
diff changeset
   772
		Per [[RFC5789]], this HTTP method is optional and 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   773
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   774
		When a LDP server chooses to support this method, 
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   775
		this specification imposes the following new requirements for LDPRs.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   776
	</p>
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   777
		
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   778
	<p>
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   779
		Any server-imposed constraints on LDPR creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   780
		<a href="#ldpr-gen-pubclireqs">must be advertised</a> to clients.
500
c52f08081c8a Removed rule on PATCH create, as it doesn't add any substantive over RFC5789
sspeiche
parents: 498
diff changeset
   781
	</p>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   782
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   783
	<section id="ldpr-patch-acceptpatch"><h2 class="normal"><a title="LDP server">LDP servers</a> that support <code>PATCH</code> MUST
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   784
		include an <code>Accept-Patch</code> HTTP response header [[!RFC5789]] on HTTP <code>OPTIONS</code>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   785
		requests, listing patch document media type(s) supported by the server.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   786
	</h2></section><!-- Was 4.8.4 / #ldpr-4_8_4 -->
186
a3471f4667d8 Removed closed issues that required no new spec changes: 50, 56, 16, 19, 17
sspeiche
parents: 185
diff changeset
   787
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   788
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   789
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   790
<section id="ldpr-HTTP_OPTIONS">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   791
<h2>HTTP OPTIONS</h2>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   792
	<p>This specification imposes the following new requirements on HTTP <code>OPTIONS</code> for LDPRs 
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   793
		beyond those in [[!HTTP11]].  Other sections of this specification, for example 
167
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   794
		<a href="#ldpr-HTTP_PATCH">PATCH</a>,
481
beb136ede044 Removed LDPR Paging HTTP OPTIONS section (no longer needed) and more cleanup of todos
sspeiche
parents: 480
diff changeset
   795
		<a href="#header-accept-post">Accept-Post</a>,
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   796
		add other requirements on <code>OPTIONS</code> responses.
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   797
		</p>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   798
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   799
	<section id="ldpr-options-must"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST support the HTTP <code>OPTIONS</code> method.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   800
	</h2></section><!-- Was 4.9.1 / #ldpr-4_9_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   801
		
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   802
	<section id="ldpr-options-allow"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST indicate their support for HTTP Methods by
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   803
		responding to a HTTP <code>OPTIONS</code> request on the LDPR’s URL with the HTTP
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   804
		Method tokens in the HTTP response header <code>Allow</code>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   805
	</h2></section><!-- Was 4.9.2 / #ldpr-4_9_2 -->
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   806
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   807
</section> <!-- h2 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   808
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   809
</section> <!-- h1 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   810
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   811
<section id="ldpc">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   812
<h1>Linked Data Platform Containers</h1>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   813
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   814
<section class="informative" id="ldpc-informative">		
466
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
   815
<h2>Introduction</h2>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   816
	<p>Many HTTP applications and sites have organizing
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   817
		concepts that partition the overall space of resources into smaller
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   818
		containers. Blog posts are grouped into blogs, wiki pages are grouped
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   819
		into wikis, and products are grouped into catalogs. Each resource
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   820
		created in the application or site is created within an instance of
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   821
		one of these container-like entities, and users can list the existing
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   822
		artifacts within one. Containers answer some basic questions, which
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   823
		are:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   824
	<ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   825
		<li>To which URLs can I POST to create new resources?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   826
		<li>Where can I GET a list of existing resources?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   827
		<li>How do I get information about the members along with the container?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   828
		<li>How	can I ensure the resource data is easy to query?</li>
497
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   829
		<li>How	is the order of the container entries expressed? [[LDP-PAGING]]</li>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   830
	</ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   831
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   832
		This document defines the representation and behavior of containers
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   833
		that address these issues. There are multiple types of containers defined
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   834
		to supported a variety of use cases, all that support a base set of capabilities.
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   835
		The contents of a container is
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   836
		defined by a set of triples in its representation (and state) called
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   837
		the <a title="Containment triples">containment triples</a> that follow a fixed pattern.
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   838
		Additional types of containers allow for the set of members of a container to be
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   839
		defined by a set of triples in its representation called
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   840
		the <a title="Membership triples">membership triples</a> that follow a consistent pattern
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   841
		(see the linked-to definition for the possible patterns). 
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   842
		The membership triples of a container all
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   843
		have the same predicate, called the membership predicate, 
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   844
		and either the subject or the object is also a consistent value
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   845
		– the remaining position of the membership
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   846
		triples (the one that varies) define the members of the container. 
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   847
		In the simplest cases, the
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   848
		consistent value will be the LDPC resource's URI, but it does not
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   849
		have to be. The membership predicate is also variable and will often
453
a70c321daf12 ACTION-120 (Part 3) Added ldp:member
sspeiche
parents: 452
diff changeset
   850
		be a predicate from the server application vocabulary or the <code>ldp:member</code> predicate.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   851
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   852
	<p>This document includes a set of guidelines for
415
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
   853
		creating new resources and adding them to the list of
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   854
		resources linked to a container. It goes on to explain how to learn about a set of related
415
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
   855
		resources, regardless of how they were created or added to the container's membership.
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
   856
		It also defines behavior when resources created using a container are later deleted;
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
   857
		deleting containers removes membership information and
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
   858
		possibly performs some cleanup tasks on unreferenced member resources.</p>
104
78fd14175304 ISSUE-59 5.3.2 limited rdf:type of ldp:Container, removed 5.6.3, reworded 5.6.2, updated 1.
sspeiche
parents: 102
diff changeset
   859
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   860
	<p>The following illustrates a very simple
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   861
		container with only three members and some information about the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   862
		container (the fact that it is a container and a brief title):</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   863
419
afe7bcda2e56 + ids on remaining examples
Eric Prud'hommeaux <eric@w3.org>
parents: 418
diff changeset
   864
<pre class="example" id="ldpc-ex-simple"># The following is the representation of
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   865
#    http://example.org/c1/
309
ea3cce737943 Get examples to validate, per http://lists.w3.org/Archives/Public/public-ldp-wg/2013Aug/0002.html and messages that came up once those noted were fixed.
John Arwe
parents: 274
diff changeset
   866
<!-- @base is here only so it's easier to paste into validators for checking -->
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   867
# @base &lt;http://example.org/c1/&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   868
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   869
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   870
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
   871
&lt;&gt;
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   872
   a ldp:BasicContainer;
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   873
   dcterms:title "A very simple container";
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   874
   ldp:contains &lt;r1&gt;, &lt;r2&gt;, &lt;r3&gt;.</pre>
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   875
 
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   876
   	<figure id="fig-ldpc-basic">
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   877
        <img src="images/ldpc-basic.png" alt="Sample Linked Data Platform Basic Container" />
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   878
        <figcaption>Sample of Linked Data Platform Basic Container</figcaption>
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   879
    </figure>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   880
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   881
	<p>This example is very straightforward - there is the containment triple
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   882
	with subject of the container, predicate of  
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   883
	<code>ldp:contains</code> and objects indicating the URIs of the contained resources. 
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
   884
	A POST to this container will create a new resource
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   885
	and add it to the list of contained resources by adding a new containment triple
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
   886
	to the container.  This type of container is also refered to as
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   887
	<a title="">Linked Data Platform Basic Container</a>.</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   888
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   889
	<p>Sometimes it is useful to use a subject
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   890
	other than the container itself as the consistent membership value, and/or to use
467
0eed67a3db4e Simplified some of the container examples
sspeiche
parents: 466
diff changeset
   891
	a  predicate from an application's domain model as the membership predicate. Let's
88
a02636c16f05 Fixed typo in new text
sspeiche
parents: 87
diff changeset
   892
	start with a domain resource for a person's net worth, as illustrated below:</p>
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   893
			
233
37842c77d995 Fixed dup id problem in example
sspeiche
parents: 232
diff changeset
   894
<pre class="example" id="ldpc-ex-membership-partial"># The following is a partial representation of
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   895
#   http://example.org/netWorth/nw1
309
ea3cce737943 Get examples to validate, per http://lists.w3.org/Archives/Public/public-ldp-wg/2013Aug/0002.html and messages that came up once those noted were fixed.
John Arwe
parents: 274
diff changeset
   896
<!-- @base is here only so it's easier to paste into validators for checking -->
ea3cce737943 Get examples to validate, per http://lists.w3.org/Archives/Public/public-ldp-wg/2013Aug/0002.html and messages that came up once those noted were fixed.
John Arwe
parents: 274
diff changeset
   897
# @base &lt;http://example.org/netWorth/nw1/&gt;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   898
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   899
@prefix o: &lt;http://example.org/ontology/&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   900
&lt;&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   901
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   902
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   903
   o:asset 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   904
      &lt;assetContainer/a1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   905
      &lt;assetContainer/a2&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   906
   o:liability 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   907
      &lt;liabilityContainer/l1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   908
      &lt;liabilityContainer/l2&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   909
      &lt;liabilityContainer/l3&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   910
</pre>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   911
	<p>From this example, there is a <code>rdf:type</code> of <code>o:NetWorth</code> indicating the
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   912
	resource represents an instance of a person's net worth and <code>o:netWorthOf</code> predicate indicating 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   913
	the associated person.  There are two sets of same-subject, same-predicate pairings; one for assets and
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   914
	one for liabilities.  It would be helpful to be able to associate these multi-valued sets using a URL
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   915
	for them to assist with managing these, this is done by associating containers with them as 
484
3b857f66ed6d Updated containerResource on examples 6 and 7, section 6.1, in resp to public-ldp email
John Arwe
parents: 483
diff changeset
   916
	illustrated in the set of related examples (one example per HTTP resource) below:
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   917
	</p>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   918
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   919
<pre class="example" id="ldpc-ex-membership-full"># The following is an elaborated representation of LDPR
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   920
#   http://example.org/netWorth/nw1
309
ea3cce737943 Get examples to validate, per http://lists.w3.org/Archives/Public/public-ldp-wg/2013Aug/0002.html and messages that came up once those noted were fixed.
John Arwe
parents: 274
diff changeset
   921
<!-- @base is here only so it's easier to paste into validators for checking -->
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   922
# @base &lt;http://example.org/netWorth/nw1/&gt;.
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   923
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
   924
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   925
@prefix o: &lt;http://example.org/ontology/&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   926
&lt;&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   927
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   928
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   929
   o:asset 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   930
      &lt;assetContainer/a1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   931
      &lt;assetContainer/a2&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   932
   o:liability 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   933
      &lt;liabilityContainer/l1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   934
      &lt;liabilityContainer/l2&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   935
      &lt;liabilityContainer/l3&gt;.
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   936
</pre>
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   937
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   938
<pre class="example" id="ldpc-ex-membership-subj"># The following is an elaborated representation of LDPC
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   939
#   http://example.org/netWorth/nw1/assetContainer/
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   940
<!-- @base is here only so it's easier to paste into validators for checking -->
484
3b857f66ed6d Updated containerResource on examples 6 and 7, section 6.1, in resp to public-ldp email
John Arwe
parents: 483
diff changeset
   941
# @base &lt;http://example.org/netWorth/nw1/assetContainer/&gt;.
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   942
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   943
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   944
@prefix o: &lt;http://example.org/ontology/&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   945
&lt;&gt;
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   946
   a ldp:DirectContainer;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   947
   dcterms:title "The assets of JohnZSmith";
488
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
   948
   ldp:membershipResource &lt;http://example.org/netWorth/nw1/&gt;;
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
   949
   ldp:hasMemberRelation o:asset;
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   950
   ldp:contains &lt;a1&gt;, &lt;a2&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   951
</pre>
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   952
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   953
<pre class="example" id="ldpc-ex-membership-full-liabcont"># The following is an elaborated representation of LDPC
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   954
#   http://example.org/netWorth/nw1/liabilityContainer/
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   955
<!-- @base is here only so it's easier to paste into validators for checking -->
484
3b857f66ed6d Updated containerResource on examples 6 and 7, section 6.1, in resp to public-ldp email
John Arwe
parents: 483
diff changeset
   956
# @base &lt;http://example.org/netWorth/nw1/liabilityContainer/&gt;.
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   957
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   958
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   959
@prefix o: &lt;http://example.org/ontology/&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   960
&lt;&gt;
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   961
   a ldp:DirectContainer;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   962
   dcterms:title "The liabilities of JohnZSmith";
488
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
   963
   ldp:membershipResource &lt;http://example.org/netWorth/nw1/&gt;;
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
   964
   ldp:hasMemberRelation o:liability;
460
1f6e06fd7272 typo: added missing brackets in example 7
Arnaud Le Hors <lehors@us.ibm.com>
parents: 459
diff changeset
   965
   ldp:contains &lt;l1&gt;, &lt;l2&gt;, &lt;l3&gt;.
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   966
</pre>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   967
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   968
	<p>The essential structure of the container is
484
3b857f66ed6d Updated containerResource on examples 6 and 7, section 6.1, in resp to public-ldp email
John Arwe
parents: 483
diff changeset
   969
	the same, but in this example, the consistent membership value 
3b857f66ed6d Updated containerResource on examples 6 and 7, section 6.1, in resp to public-ldp email
John Arwe
parents: 483
diff changeset
   970
	(<a title="Membership triples">membership-constant-URI</a>, still in the subject position) is not the
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   971
	container itself – it is a separate net worth resource. The
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   972
	membership predicates are <code>o:asset</code> and <code>o:liability</code> – predicates
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   973
	from the domain model. A POST of an asset representation to the asset container will create a new
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   974
	asset and add it to the list of	members by adding a new membership triple
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
   975
	to the resource and containment triple to the container. You might wonder why
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   976
	<code>http://example.org/netWorth/nw1</code> isn't made a container itself and POST
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   977
	the new asset directly there. That would be a fine design if <code>http://example.org/netWorth/nw1</code>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   978
	had only assets, but if it has separate predicates for assets and liabilities,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   979
	that design will not work because it is unspecified to which predicate the POST
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   980
	should add a membership triple. Having separate <code>http://example.org/netWorth/nw1/assetContainer/</code> 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   981
	and <code>http://example.org/netWorth/nw1/liabilityContainer/</code> container
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   982
	resources allows both assets and liabilities to be created.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   983
	</p>
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   984
	<p>This type of container is refered to as an <a title="Linked Data Platform Direct Container">LDP Direct Container</a>.  
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   985
	<a title="Linked Data Platform Direct Container">LDP Direct Container</a> adds the concept of <a title="Membership">membership</a>
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   986
	and flexibilty on how to specify the <a title="Membership triples">membership triples</a>.
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
   987
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   988
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   989
	<p>As seen in the <a href="#ldpc-ex-membership-subj"><code>assetContainer/</code> example</a>, 
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   990
	clients cannot correctly guess
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
   991
	at the membership triples, so the example includes this information in
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
   992
	triples whose subject is the LDPC resource itself.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   993
	</p>
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
   994
	
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   995
	<p>Alternatively, servers may provide the net worth resource and supporting containers in a single response
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   996
	representations.  When doing this, a preference would be for RDF formats that support multiple named graphs, one
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   997
	named graph for the net worth resource and then two others for asset and liability containers.  This allows for
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
   998
	the membership triples to be represented with the named graph for the net worth resource, while the containment triples
495
559a77692da5 Fixed up some specref references
sspeiche
parents: 494
diff changeset
   999
	would be represented within the liability and asset containers [[rdf11-concepts]].  Generally, the membership triples belong
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
  1000
	to the representation of a LDP-RS and the containment triples belong to the representation of the LDPC.
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1001
	</p>
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1002
	
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1003
	<p>Additionally, we could extend our net worth example to include a container for
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1004
	advisors (people) that have managed the assets and liabilities.  We have decided
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1005
	to identify these advisors with URLs that contain a fragment (hash) to represent
462
3a7f9b05bad8 proofing through 454
John Arwe
parents: 461
diff changeset
  1006
	these real-world resources, not the documents that describe them.</p>
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1007
	
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1008
<pre class="example" id="ldpc-ex-membership-full"># The following is an elaborated representation of
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
  1009
#   http://example.org/netWorth/nw1
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1010
# Adding o:advisor but eaving off o:asset and o:liability for brevity.
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1011
<!-- @base is here only so it's easier to paste into validators for checking -->
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1012
# @base &lt;http://example.org/netWorth/nw1/&gt;
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1013
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1014
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
  1015
@prefix foaf: &lt;http://xmlns.com/foaf/0.1/&gt;.
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1016
@prefix o: &lt;http://example.org/ontology/&gt;.
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1017
&lt;&gt;
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1018
   a o:NetWorth;
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1019
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1020
   o:advisor
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1021
   	 &lt;advisorContainer/bob#me&gt;,
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1022
   	 &lt;advisorContainer/marsha#me&gt;.
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1023
   	 
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1024
&lt;advisorContainer/&gt;
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1025
   a ldp:IndirectContainer;
465
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
  1026
   dcterms:title "The asset advisors of JohnZSmith";
488
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
  1027
   ldp:membershipResource &lt;&gt;;
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
  1028
   ldp:hasMemberRelation o:advisor;
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1029
   ldp:insertedContentRelation foaf:primaryTopic;
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1030
   ldp:contains
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1031
   	 &lt;advisorContainer/bob&gt;,
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1032
   	 &lt;advisorContainer/marsha&gt;.
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1033
</pre>	
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1034
	
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1035
	<p>To handle this type of indirection, the triple with predicate of <code>ldp:insertedContentRelation</code> and object of 
468
f960af656afb Simplified some of the container examples
sspeiche
parents: 467
diff changeset
  1036
	<code>foaf:primaryTopic</code> informs clients that when POSTing to this container, they need to include a triple of the
462
3a7f9b05bad8 proofing through 454
John Arwe
parents: 461
diff changeset
  1037
	form <code>(&lt;&gt;, foaf:primaryTopic, topic-URI)</code> to inform the server which URI to use 
3a7f9b05bad8 proofing through 454
John Arwe
parents: 461
diff changeset
  1038
	(<code>topic-URI</code>) in the new membership triple.</p>
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1039
	
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1040
	<p>This type of container is also referred to as a <a title="Linked Data Platform Indirect Container">LDP Indirect Container</a>. 
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1041
	It is similar to a an <a title="Linked Data Platform Direct Container">LDP Direct Container</a> 
468
f960af656afb Simplified some of the container examples
sspeiche
parents: 467
diff changeset
  1042
	but it provides an indirection to add (via a create request) as member any resource, 
462
3a7f9b05bad8 proofing through 454
John Arwe
parents: 461
diff changeset
  1043
	such as a URI representing a real-world object,
3a7f9b05bad8 proofing through 454
John Arwe
parents: 461
diff changeset
  1044
	that is different from the document that is created.</p>
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1045
491
16d872a712b6 Adopted container hierarchy and merged Indirect Container into Container
sspeiche
parents: 489
diff changeset
  1046
	<p><a href="#fig-ldpc-types"></a> illustrates the 3 types: Container, Basic Container and Direct Container, along
16d872a712b6 Adopted container hierarchy and merged Indirect Container into Container
sspeiche
parents: 489
diff changeset
  1047
	with their class relationship to types of LDPRs.</p>
450
e8d84dbc86dc ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 449
diff changeset
  1048
	
e8d84dbc86dc ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 449
diff changeset
  1049
	 <figure id="fig-ldpc-types">
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1050
        <img src="images/ldpc-hierarchy.png" alt="Types of Linked Data Platform Containers" />
491
16d872a712b6 Adopted container hierarchy and merged Indirect Container into Container
sspeiche
parents: 489
diff changeset
  1051
        <figcaption>Class relationship of types of Linked Data Platform Containers</figcaption>
450
e8d84dbc86dc ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 449
diff changeset
  1052
    </figure>
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1053
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1054
	<p>The following table illustrates some differences between <a title="membership">membership</a> and 
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1055
	<a title="containment">containment</a> triples.  For details on the normative behavior, see appropriate sections
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1056
	below.
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1057
	</p>
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1058
	<table border="1" id="ldpc-mbrcntdiff">
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1059
		<thead><tr><th rowspan="2">Completed Request</th><th colspan="2">Effects</th></tr>
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
  1060
		       <tr class="oddrow"><th>Membership</th><th>Containment</th></tr></thead>
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1061
		<tr><td>LDPR created in LDP-BC</td><td>New triple: (LDPC, ldp:contains, LDPR)</td><td>Same</td></tr>
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
  1062
		<tr><td>LDPR created in LDP-DC</td><td>New triple links LDP-RS to created LDPR. LDP-RS URI may be same as LDP-DC</td>
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1063
			<td>New triple: (LDPC, ldp:contains, LDPR)</td></tr>
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1064
		<tr><td>LDPR created in LDP-IC</td><td>New triple links LDP-RS to content indicated URI</td>
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1065
			<td>New triple: (LDPC, ldp:contains, LDPR)</td></tr>
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1066
		<tr><td>LDPR is deleted</td><td>Membership triple may be removed</td><td>(LDPC, ldp:contains, LDPR) triple is removed
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1067
			</td></tr>
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1068
		<tr><td>LDPC is deleted</td><td>Triples and member resources may be removed</td><td>Triples of form 
476
330d6aac4572 Updated membership info table
sspeiche
parents: 475
diff changeset
  1069
			(LDPC, ldp:contains, LDPR) and contained LDPRs may be removed</td></tr>
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1070
	</table>
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1071
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1072
<section id="ldpc-get_empty-container_props"><h2 class="normal">Retrieving Only Empty-Container Triples
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1073
	</h2><!-- Was 5.1.1 / #ldpc-get_empty-container_props -->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1074
	<p>The representation of a container
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1075
		that has many members will be large. There are several important
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1076
		cases where clients need to access only the subset of the container's properties 
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1077
		that are unrelated to member resources and unrelated to contained documents, for
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1078
		example to determine the membership triple pattern and membership predicate of a 
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1079
		LDP-DC.  LDP calls these <a title="Empty-container triples">empty-container triples</a>,
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1080
		because they are what remains when the container has zero members and zero contained resources.
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1081
		Since retrieving the whole container representation to
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1082
		get this information may be onerous for clients and cause unnecessary
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1083
		overhead on servers, we define a way to retrieve only
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1084
		these property values (and more generally, a way to retrieve only the 
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1085
		subset of properties used to address other major clusters of use cases).
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1086
		LDP adds parameters to the HTTP <code>Prefer</code> header's 
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1087
		<code>return=representation</code> preference for this 
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1088
		(see <a href="#prefer-parameters" class="sectionRef"></a> for details).
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1089
	</p>
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1090
	<p>The example listed here only shows
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1091
		a simple case where few empty-container triples are
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1092
		retrieved. In real world situations more complex cases are likely, such as those that add other predicates to
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1093
		containers, for example providing validation information and
495
559a77692da5 Fixed up some specref references
sspeiche
parents: 494
diff changeset
  1094
		associating SPARQL endpoints. [[sparql11-query]]</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1095
	<p>
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1096
		Here is an example requesting the empty-container triples of a
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1097
		container identified by the URL <code>http://example.org/container1/</code>.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1098
	</p>
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1099
<p id="ldpc-ex-empty-container">Request:</p>
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1100
<pre class="example">GET /container1 HTTP/1.1
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1101
Host: example.org
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1102
Accept: text/turtle; charset=UTF-8
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1103
Prefer: return=representation; include="http://www.w3.org/ns/ldp#PreferEmptyContainer"
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1104
</pre>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1105
<p>Response:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1106
<pre class="example">HTTP/1.1 200 OK
13
eea17080fdf2 Minor typo fix and some notes
sspeiche
parents: 12
diff changeset
  1107
Content-Type: text/turtle; charset=UTF-8
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1108
ETag: "_87e52ce291112"
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1109
Content-Length: 325
491
16d872a712b6 Adopted container hierarchy and merged Indirect Container into Container
sspeiche
parents: 489
diff changeset
  1110
Link: &lt;http://www.w3.org/ns/ldp#Container&gt;; rel="type"
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1111
Preference-Applied: return=representation 
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1112
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1113
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1114
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1115
74
30624f0a7534 Adding trailing '/' on Container URLs to help with readability based on WG suggestion
sspeiche
parents: 73
diff changeset
  1116
&lt;http://example.org/container1/&gt;
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1117
   a ldp:DirectContainer;
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
  1118
   dcterms:title "A Linked Data Platform Container of Acme Resources";
488
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
  1119
   ldp:membershipResource &lt;http://example.org/container1/&gt;;
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
  1120
   ldp:hasMemberRelation ldp:member;
415
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
  1121
   ldp:insertedContentRelation ldp:MemberSubject;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1122
   dcterms:publisher &lt;http://acme.com/&gt;.</pre>
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1123
   
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1124
	<p>
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1125
		LDP recommends using PATCH to update these properties, if necessary.  It provides no facility
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1126
		for updating them via PUT without replacing the entire container's state.
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1127
	</p>
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
  1128
	</section><!-- ldpc-get_empty-container_props -->
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1129
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1130
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1131
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1132
<section id="ldpc-container">
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1133
<h2>Container</h2>
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1134
<p>The following section contains normative clauses for <a title="">Linked Data Platform Container</a>.</p>
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1135
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1136
<section id="ldpc-general">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1137
<h2>General</h2>
33
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
John Arwe <johnarwe@us.ibm.com>
parents: 21
diff changeset
  1138
	<p>The Linked Data Platform does not define how clients
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
John Arwe <johnarwe@us.ibm.com>
parents: 21
diff changeset
  1139
		discover <dfn><abbr title="Linked Data Platform Containers">LDPCs</abbr></dfn>.</p>
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
John Arwe <johnarwe@us.ibm.com>
parents: 21
diff changeset
  1140
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1141
	<section id="ldpc-isldpr"><h2 class="normal">Each <a title="">Linked Data Platform Container</a> MUST also be 
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1142
		a conforming <a title="">Linked Data Platform RDF Source</a>. <a title="">LDP client</a>s MAY infer the following triple:
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1143
	whose subject is <code>ldp:Container</code>, 
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1144
	whose predicate is <code>rdfs:subClassOf</code>, 
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1145
	and whose object is <code>ldp:RDFSource</code>, 
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1146
	but there is no requirement to materialize this triple in the LDPC representation.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1147
	</h2></section><!-- Was 5.2.1 / #ldpc-5_2_1 -->
454
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1148
		
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1149
	<section id="ldpc-typecontainer"><h2 class="normal">The representation of a LDPC MAY have an <code>rdf:type</code>
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1150
		of only one of <code>ldp:Container</code> for <a title="">Linked Data Platform Container</a>.
463
ae72388dbb82 start action-127 paging use of [23]xx response code; also changed 'informative' to 'non-normative' so sandro is happy[ier]
John Arwe
parents: 462
diff changeset
  1151
		Non-normative note: <a href="#ldp-rdfconcepts-extra-triples-types">LDPCs
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
  1152
		might have additional types</a>, like any <a title="Linked Data Platform RDF Source">LDP-RS</a>.
454
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1153
	</h2></section><!-- Was 5.2.7 / #ldpc-5_2_7 -->
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1154
	
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1155
	<section id="ldpc-nordfcontainertypes"><h2 class="normal">LDPC representations SHOULD NOT use RDF container types <code>rdf:Bag</code>,
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1156
		<code>rdf:Seq</code> or <code>rdf:List</code>.
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1157
	</h2></section><!-- Was 5.2.8 / #ldpc-5_2_8 -->
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1158
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1159
	<section id="ldpc-linktypehdr"><h2 class="normal"><a title="LDP server">LDP servers</a>
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1160
		exposing LDPCs
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1161
		MUST advertise their LDP support by exposing a HTTP <code>Link</code> header
454
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1162
		with a target URI of <code>http://www.w3.org/ns/ldp#Container</code>, and
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1163
		a link relation type of <code>type</code> (that is, <code>rel='type'</code>)
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1164
		in all responses to requests made 
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1165
		to the LDPC's HTTP <code>Request-URI</code>. 
454
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1166
		<a title="LDP server">LDP servers</a> MAY provide additional HTTP <code>Link: rel='type'</code> headers
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1167
		to advertise their support for <a href="#ldpc-typecontainer">specific LDPC types</a>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1168
		The <a href="#ldpr-gen_linktypehdr">notes on the corresponding LDPR constraint</a> apply
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1169
		equally to LDPCs.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1170
	</h2></section><!-- Was 5.2.11 / #ldpc-5_2_11 -->
176
60b0a09af2c4 Just a sample for respec bug, will remove
sspeiche
parents: 175
diff changeset
  1171
	
470
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
  1172
	<section id="ldpc-prefer"><h2 class="normal"><a title="LDP server">LDP servers</a>
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
  1173
		SHOULD respect all of a client's LDP-defined hints, for example 
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
  1174
		<a href="#prefer-parameters">which subsets of LDP-defined state</a>
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
  1175
		the client is interested in processing,
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
  1176
		to influence the set of triples returned in representations of an LDPC, 
497
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
  1177
		particularly for large LDPCs.  See also [[LDP-PAGING]].
470
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
  1178
	</h2></section>
eb040e50a66f ACTION-126: Add Prefer header, adjusted for TallTed's results
John Arwe
parents: 469
diff changeset
  1179
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1180
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1181
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1182
<section id="ldpc-HTTP_GET">	
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1183
<h2>HTTP GET</h2>
502
ee14a8abdb2e Removed 6.3.1 LDPC GET requirement and put in general clause
sspeiche
parents: 501
diff changeset
  1184
	<p>
ee14a8abdb2e Removed 6.3.1 LDPC GET requirement and put in general clause
sspeiche
parents: 501
diff changeset
  1185
		Per <a href="#ldpr-HTTP_GET" class="sectionRef"></a> the HTTP GET method is required and 
ee14a8abdb2e Removed 6.3.1 LDPC GET requirement and put in general clause
sspeiche
parents: 501
diff changeset
  1186
		additional requirements can be found in <a href="#ldpc-general" class="sectionRef"></a>.
ee14a8abdb2e Removed 6.3.1 LDPC GET requirement and put in general clause
sspeiche
parents: 501
diff changeset
  1187
	</p>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1188
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1189
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1190
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1191
<section id="ldpc-HTTP_POST">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1192
<h2>HTTP POST</h2>
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1193
	<p>
500
c52f08081c8a Removed rule on PATCH create, as it doesn't add any substantive over RFC5789
sspeiche
parents: 498
diff changeset
  1194
		Per [[HTTP11]], this HTTP method is optional and 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1195
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1196
		When a LDP server chooses to support this method, 
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1197
		this specification imposes the following new requirements for LDPCs.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1198
	</p>
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1199
		
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1200
	<p>
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
  1201
		Any server-imposed constraints on creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1202
		<a href="#ldpr-gen-pubclireqs">must be advertised</a> to clients.
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
  1203
	</p>
37
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
  1204
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1205
	<section id="ldpc-post-created201"><h2 class="normal">LDPC clients SHOULD create member resources by submitting a representation as
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
  1206
		the entity body of the HTTP <code>POST</code> to a known LDPC. If the resource was created successfully, <a title="LDP server">LDP servers</a> MUST
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1207
		respond with status code 201 (Created) and the <code>Location</code>
94
2292ad834245 ISSUE-39 Moved informative text from 5.4.5 into 5.4.1, shifted subsections .6-.10
sspeiche
parents: 93
diff changeset
  1208
		header set to the new resource’s URL. Clients shall not expect any representation in the response
2292ad834245 ISSUE-39 Moved informative text from 5.4.5 into 5.4.1, shifted subsections .6-.10
sspeiche
parents: 93
diff changeset
  1209
		entity body on a 201 (Created) response.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1210
	</h2></section><!-- Was 5.4.1 / #ldpc-5_4_1 -->
94
2292ad834245 ISSUE-39 Moved informative text from 5.4.5 into 5.4.1, shifted subsections .6-.10
sspeiche
parents: 93
diff changeset
  1211
465
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
  1212
	<section id="ldpc-post-createdmbr-contains"><h2 class="normal">
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
  1213
		When a successful HTTP <code>POST</code> request to a LDPC
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
  1214
		results in the creation of an LDPR, 
462
3a7f9b05bad8 proofing through 454
John Arwe
parents: 461
diff changeset
  1215
		the newly created document MUST
3a7f9b05bad8 proofing through 454
John Arwe
parents: 461
diff changeset
  1216
		appear as a contained resource of the LDPC until the newly created document is deleted or
465
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
  1217
		removed by other methods. 
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
  1218
	</h2></section>
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
  1219
	
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
  1220
	<section id="ldpc-post-createbins"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY accept an HTTP <code>POST</code> of non-RDF representations 
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
  1221
	<a title="Linked Data Platform Non-RDF Source">(LDP-NRs)</a> for
465
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
  1222
		creation of any kind of resource, for example binary resources.  See <a href="#ldpc-post-acceptposthdr">the Accept-Post section</a> for 
395
0408e1e5bbf8 ACTION-105: Update spec to reflect 9/30 resolution moving Paging links to HTTP headers (partial: does not include sort criteria changes yet)
John Arwe
parents: 393
diff changeset
  1223
		details on how clients can discover whether a LDPC supports this behavior.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1224
	</h2></section><!-- Was 5.4.3 / #ldpc-5_4_3 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1225
	
454
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
  1226
	<section id="ldpc-post-createrdf"><h2 class="normal"><a title="LDP server">LDP servers</a> that successfully create a resource from a
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1227
		RDF representation in the request entity body MUST honor the client's requested interaction model(s). The created resource
495
559a77692da5 Fixed up some specref references
sspeiche
parents: 494
diff changeset
  1228
		can be thought of as an RDF <a href="http://www.w3.org/TR/rdf11-concepts/#dfn-named-graph">named graph</a> [[!rdf11-concepts]].
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1229
		If any model cannot be honored, the server MUST fail the request.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1230
	</h2><!-- Was 5.4.4 / #ldpc-5_4_4 -->
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1231
	<ul>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1232
	<li>If the request header <a href="#ldpr-gen-linktypehdr">specifies an LDPR interaction model</a>, then the server MUST create an LDPR.</li>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1233
	<li>If the request header <a href="#ldpc-linktypehdr">specifies an LDPC interaction model</a>, then the server MUST create an LDPC.
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1234
	</li>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1235
	<li>This specification does not constrain the server's behavior in other cases.</li>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1236
	<p>Note: A consequence of this is that LDPCs can be used to create LDPCs, if the server supports doing so.</p>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
  1237
	</ul>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1238
	</section>
43
6d2805d7c6bf Added new issues ranging from 26-43. Removed closed/deferred issues: 2 & 3
sspeiche
parents: 42
diff changeset
  1239
	
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1240
	<section id="ldpc-post-turtle"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST accept a request entity body with a request header
495
559a77692da5 Fixed up some specref references
sspeiche
parents: 494
diff changeset
  1241
	    of <code>Content-Type</code> with value of <code>text/turtle</code> [[!turtle]].
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1242
	</h2></section><!-- Was 5.4.5 / #ldpc-5_4_5 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1243
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1244
	<section id="ldpc-post-contenttype"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD use the <code>Content-Type</code> request header 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1245
		to determine the representation format when the request has an entity body. 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1246
	</h2></section><!-- Was 5.4.6 / #ldpc-5_4_6 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1247
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1248
	<section id="ldpc-post-rdfnullrel"><h2 class="normal">In RDF representations, <a title="LDP server">LDP servers</a> MUST interpret the null relative
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1249
		URI for the subject of triples in the LDPR representation in the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1250
		request entity body as referring to the entity in the request body.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1251
		Commonly, that entity is the model for the “to be created” LDPR, so
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1252
		triples whose subject is the null relative URI will usually result in
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1253
		triples in the created resource whose subject is the created
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
  1254
		resource.  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1255
	</h2></section><!-- Was 5.4.7 / #ldpc-5_4_7 -->	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1256
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1257
	<section id="ldpc-post-serverassignuri"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD assign the URI for the resource to be
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1258
		created using server application specific rules in the absence of a <a href="#ldpc-post-slug">client hint</a>.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1259
	</h2></section><!-- Was 5.4.8 / #ldpc-5_4_8 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1260
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1261
	<section id="ldpc-post-mincontraints"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD allow clients to create new resources without
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1262
		requiring detailed knowledge of application-specific constraints.
504
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
  1263
		This is a consequence of the requirement to enable simple creation and modification of LDPRs. LDP servers
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
  1264
		expose these application-specific constraints as described in <a href="#ldpr-general" class="sectionRef"></a>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1265
	</h2></section><!-- Was 5.4.9 / #ldpc-5_4_9 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1266
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1267
	<section id="ldpc-post-slug"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY allow clients to suggest the URI for a resource
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
  1268
		created through <code>POST</code>, using the HTTP <code>Slug</code> header as defined in [[!RFC5023]].  LDP adds
115
c8f6c689d373 issue 43 use slug per atompub
John Arwe
parents: 114
diff changeset
  1269
		no new requirements to this usage, so its presence functions as a client hint to the server 
c8f6c689d373 issue 43 use slug per atompub
John Arwe
parents: 114
diff changeset
  1270
		providing a desired string to be incorporated into the server's final choice of resource URI.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1271
	</h2></section><!-- Was 5.4.10 / #ldpc-5_4_10 -->
115
c8f6c689d373 issue 43 use slug per atompub
John Arwe
parents: 114
diff changeset
  1272
	
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1273
	<section id="ldpc-post-dontreuseuris"><h2 class="normal"><a title="LDP server">LDP servers</a> that allow member creation via <code>POST</code> 
416
166375df8bf8 Various editorial and validation fixes
sspeiche
parents: 415
diff changeset
  1274
		SHOULD NOT re-use URIs.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1275
	</h2></section><!-- Was 5.4.11 / #ldpc-5_4_11 -->
170
4bba75f6d0af ISSUE-15 Inserted 5.4.12, 5.6.4, 5.7.2 to describe link-relation meta usage
sspeiche
parents: 169
diff changeset
  1276
	
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1277
	<section id="ldpc-post-createbinlinkmetahdr"><h2 class="normal">Upon successful creation of a  
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
  1278
	<a title="Linked Data Platform Non-RDF Source">LDP-NR</a> (HTTP status code of 
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
  1279
	201-Created and URI indicated by <code>Location</code> response header), <a title="LDP server">LDP servers</a> MAY create an associated 
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
  1280
	<a title="Linked Data Platform RDF Source">LDP-RS</a>
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
  1281
	to contain data about the newly created LDP-NR.  If an LDPC server creates this associated <a title="Linked Data Platform RDF Source">LDP-RS</a> it MUST indicate
505
7c9fc6642481 Minor editorial tweaks
sspeiche
parents: 504
diff changeset
  1282
	its location on the HTTP response using the HTTP <code>Link</code> response header with link relation <code>describedby</code>
504
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
  1283
	and <code>href</code> to be the URI of the associated LDP-RS resource [[!RFC5988]].
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1284
	</h2></section><!-- Was 5.4.12 / #ldpc-5_4_12 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1285
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1286
	<section id="ldpc-post-acceptposthdr"><h2 class="normal"><a title="LDP server">LDP servers</a> that support <code>POST</code> MUST
167
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1287
		include an <a href="#header-accept-post"><code>Accept-Post</code> response header</a> on HTTP <code>OPTIONS</code>
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1288
		responses, listing post document media type(s) supported by the server.
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1289
		LDP only specifies the use of <code>POST</code> for the purpose of creating new resources, but a server
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1290
		can accept <code>POST</code> requests with other semantics.  
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1291
		While "POST to create" is a common interaction pattern, LDP clients are not guaranteed, even when 
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1292
		making requests to an LDP server, that every successful <code>POST</code> request will result in the 
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1293
		creation of a new resource; they must rely on out of band information for knowledge of which <code>POST</code> requests,
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1294
		if any, will have the "create new resource" semantics.
167
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1295
		This requirement on LDP servers is intentionally stronger than the one levied in the
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1296
		<a href="#header-accept-post">header registration</a>; it is unrealistic to expect all existing resources
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1297
		that support <code>POST</code> to suddenly return a new header or for all new specifications constraining
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1298
		<code>POST</code> to be aware of its existence and require it, but it is a reasonable requirement for new
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
  1299
		specifications such as LDP.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1300
	</h2></section><!-- Was 5.4.13 / #ldpc-5_4_13 -->
169
9bff8b24692d issue-79 ldp:contains
John Arwe
parents: 167
diff changeset
  1301
		
482
57c86943ab63 Updated LDPC create ldp:contains (errant MAY to MUST, resolving conflicting statements)
John Arwe
parents: 481
diff changeset
  1302
	<section id="ldpc-post-ldpcreated"><h2 class="normal">
57c86943ab63 Updated LDPC create ldp:contains (errant MAY to MUST, resolving conflicting statements)
John Arwe
parents: 481
diff changeset
  1303
		LDPCs that create new member resources MUST add a triple to the container
169
9bff8b24692d issue-79 ldp:contains
John Arwe
parents: 167
diff changeset
  1304
		whose subject is the container's URI, 
459
759f7a1fe85a ACTION-133 Get rid of ldp:created which is subsumed by ldp:contains
sspeiche
parents: 458
diff changeset
  1305
		whose predicate is <code>ldp:contains</code>, and
169
9bff8b24692d issue-79 ldp:contains
John Arwe
parents: 167
diff changeset
  1306
		whose object is the newly created member resource's URI; 
9bff8b24692d issue-79 ldp:contains
John Arwe
parents: 167
diff changeset
  1307
		it MAY add other triples as well.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1308
	</h2></section><!-- Was 5.4.14 / #ldpc-5_4_14 -->
169
9bff8b24692d issue-79 ldp:contains
John Arwe
parents: 167
diff changeset
  1309
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1310
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1311
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1312
<section id="ldpc-HTTP_PUT">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1313
<h2>HTTP PUT</h2>
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1314
	<p>
500
c52f08081c8a Removed rule on PATCH create, as it doesn't add any substantive over RFC5789
sspeiche
parents: 498
diff changeset
  1315
		Per [[HTTP11]], this HTTP method is optional and 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1316
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1317
		When a LDP server chooses to support this method, 
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1318
		this specification imposes the following new requirements for LDPCs.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1319
	</p>
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1320
		
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1321
	<p>
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
  1322
		Any server-imposed constraints on creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1323
		<a href="#ldpr-gen-pubclireqs">must be advertised</a> to clients.
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
  1324
	</p>
37
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
  1325
		
501
a1634728bc5d Changed LDPC SHOULD NOT put (6.5.1) to be about containment
sspeiche
parents: 500
diff changeset
  1326
	<section id="ldpc-put-mbrprops"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD NOT allow HTTP <code>PUT</code> to update a LDPC’s <a>containment triples</a>; 
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1327
		if the server receives such a request, it SHOULD respond with a 409
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1328
		(Conflict) status code.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1329
	</h2></section><!-- Was 5.5.1 / #ldpc-5_5_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1330
	
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1331
	<section id="ldpc-put-create"><h2 class="normal"><a title="LDP server">LDP servers</a> that allow LDPR creation via <code>PUT</code> 
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
  1332
		SHOULD NOT re-use URIs.  For RDF representations (LDP-RSs),the created resource
495
559a77692da5 Fixed up some specref references
sspeiche
parents: 494
diff changeset
  1333
		can be thought of as a RDF <a href="http://www.w3.org/TR/rdf11-concepts/#dfn-named-graph">named graph</a> [[!rdf11-concepts]].
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1334
	</h2></section><!-- Was 5.5.4 / #ldpc-5_5_4 -->
116
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1335
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1336
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1337
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1338
<section id="ldpc-HTTP_DELETE">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1339
<h2>HTTP DELETE</h2>
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1340
	<p>
500
c52f08081c8a Removed rule on PATCH create, as it doesn't add any substantive over RFC5789
sspeiche
parents: 498
diff changeset
  1341
		Per [[HTTP11]], this HTTP method is optional and 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1342
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1343
		When a LDP server chooses to support this method, 
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1344
		this specification imposes the following new requirements for LDPCs.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
  1345
	</p>
37
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
  1346
		
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1347
	<section id="ldpc-del-contremovesconttriple"><h2 class="normal">
480
96f2d9c4a742 Updated LDPC DELETE language and cleanup todos
sspeiche
parents: 479
diff changeset
  1348
		When a LDPR identified by the object of a <a title="containment triples">containment triple</a> is deleted, the LDPC server MUST also remove 
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1349
		the LDPR from the containing LDPC by removing the corresponding containment triple.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1350
	</h2>
388
63e9c5b73aa2 Resolve ACTION-107 Update spec to reflect 10/07 resolution on 5.6.2 LDPC deletion
John Arwe
parents: 387
diff changeset
  1351
	<blockquote>
466
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
  1352
		Non-normative note: The <a>LDP server</a> might perform additional actions, 
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
  1353
		as described in the <a href="#ldp-http-method-side-effects">normative references</a> like [[HTTP11]]. 
169
9bff8b24692d issue-79 ldp:contains
John Arwe
parents: 167
diff changeset
  1354
		For example, the server could perform additional cleanup tasks for resources it knows are no longer referenced or have not
104
78fd14175304 ISSUE-59 5.3.2 limited rdf:type of ldp:Container, removed 5.6.3, reworded 5.6.2, updated 1.
sspeiche
parents: 102
diff changeset
  1355
		been accessed for some period of time.
388
63e9c5b73aa2 Resolve ACTION-107 Update spec to reflect 10/07 resolution on 5.6.2 LDPC deletion
John Arwe
parents: 387
diff changeset
  1356
	</blockquote>
466
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
  1357
	</section><!-- Was 5.6.1 / #ldpc-5_6_1 -->
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1358
	
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1359
	<section id="ldpc-del-contremovescontres"><h2 class="normal">
480
96f2d9c4a742 Updated LDPC DELETE language and cleanup todos
sspeiche
parents: 479
diff changeset
  1360
	When a LDPR identified by the object of a <a title="containment triples">containment triple</a> is deleted, and the LDPC server 
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
  1361
	created an associated LDP-RS (see the <a href="#ldpc-post-createbinlinkmetahdr">LDPC POST section</a>), the LDPC server MUST also remove the associated LDP-RS it created.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1362
	</h2></section><!-- Was 5.6.4 / #ldpc-5_6_4 -->
170
4bba75f6d0af ISSUE-15 Inserted 5.4.12, 5.6.4, 5.7.2 to describe link-relation meta usage
sspeiche
parents: 169
diff changeset
  1363
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1364
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1365
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1366
<section id="ldpc-HTTP_HEAD">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1367
<h2>HTTP HEAD</h2>
395
0408e1e5bbf8 ACTION-105: Update spec to reflect 9/30 resolution moving Paging links to HTTP headers (partial: does not include sort criteria changes yet)
John Arwe
parents: 393
diff changeset
  1368
	<p>Note that certain LDP mechanisms, such as <a href="#ldpr-Paging">paging</a>, 
0408e1e5bbf8 ACTION-105: Update spec to reflect 9/30 resolution moving Paging links to HTTP headers (partial: does not include sort criteria changes yet)
John Arwe
parents: 393
diff changeset
  1369
		rely on HTTP headers, and HTTP generally requires that
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
  1370
		<code>HEAD</code> responses include the same headers as <code>GET</code> responses. Also <a title="LDP server">LDP servers</a> must also include HTTP headers
237
6871b9ac5339 Fixed various link checker bugs
sspeiche
parents: 235
diff changeset
  1371
		on response to <code>OPTIONS</code>, see <a href="#ldpr-HTTP_OPTIONS" class="sectionRef"></a>.
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
  1372
		Thus, implementers supporting <code>HEAD</code> should also carefully read the
194
b6d66196a02d Fixed biblirefs, consistency items and moved editor todo into comments
sspeiche
parents: 192
diff changeset
  1373
		<a href="#ldpc-HTTP_GET" class="sectionRef"></a> and <a href="#ldpc-HTTP_OPTIONS" class="sectionRef"></a>.</p>
171
bfb383feed88 Moved 5.7.* sections out of HEAD and into OPTIONS as 5.9.*, added 4.6.2
sspeiche
parents: 170
diff changeset
  1374
</section>
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe</