ldp.html
author sspeiche
Wed, 22 Jan 2014 16:03:35 -0500
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parent 436 130a8b8a4583
child 438 5fc5b459c993
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Fixed formating with >h2 formatting
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<!DOCTYPE html>
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<!-- 
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 Editor TODO:
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   - Search "TODO" within this document.
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   - Convert cases like 5.4.3 to a sectionRef ... search on sectionRef in case numbers change
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   - Once companion documents (best practices, primer) have URLs, link to them.  Search on "companion".
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   - Once the membership* names stabilize, take a pass through for "membership consistent value", membership-constant-URI
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     and see if there is a friendlier way to phrase it.
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   - Paging intro: add 3rd example showing header linkage amongst pages and (HEAD on) the base resource.
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     Maybe also insert HEAD on base as new first example instead of relying on text alone.
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   - The ReSpec SPARQL QUERY link is http://www.w3.org/TR/rdf-sparql-query/ , which has highlighted text
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	referring readers to SPARQL 1.1.  Which normative reference do we want?
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 Various pre-LC comments:
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    - 5.2.5.1 For a given triple T with a subject C of the LDPC and predicate of ldp:containsRelation, 
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	  5.2.5.2 For a given triple T with a subject C of the LDPC and predicate of ldp:containedByRelation, 
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	  5.2.10 Some LDPC's have membership object's that are not directly URIs minted upon LDPC member creation, 
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	  (JohnA) I found these particularly hard to read.  And I perpetrated the SortCollation paragraphs.  
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	  Links to examples might be an 80-20 solution. 
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	- 5.3.1: I'd change the link to the example ("as in the example") to refer the concrete example #, I think example 9. 
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	  Currently does not work when printing.
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 Misc during LC comments:
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    - http://lists.w3.org/Archives/Public/public-ldp/2013Aug/0002.html
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      #1 Should update example in 5.1.3 to be more clear on what the request vs base URI is.  Also example is missing ldp:nextPage.
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 -->
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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 src='file:///Users/sspeiche/git/respec/js/profile-w3c-common.js' 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: 0, // HACK: We want 2 but auto-numbering doesn't happen
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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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			},
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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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    </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 provides a widely re-usable pattern to deal with large resources.  
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	Depending on the server’s capabilities, a GET request on a <a title="Paged resource">resource</a> can
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	return a <a title="Single-page resource">subset of the resource (one page)</a>, that provides access to subsequent pages 
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	(see <a href="#ldpr-Paging" class="sectionRef"></a>). 
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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>For context and background related to some standards, it could be useful to read <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><dfn>Linked Data Platform Resource</dfn> (<abbr title="Linked Data Platform Resource">LDPR</abbr>)</dt>
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	<dd>HTTP resource whose state is represented in RDF 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 Container</dfn> (<abbr title="Linked Data Platform Container">LDPC</abbr>)</dt>
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	<dd>An LDPR representing a collection of <a title="Membership triples">membership triples</a> which is uniquely identified by a URI
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	that responds to client requests for creation, modification, and enumeration of its members.
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	<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>Membership triples</dfn></dt>
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	<dd>A set of triples in an LDPC's state that lists its members.
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		A container's membership triples all have one of the following patterns:
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		<table style="margin-left: +3em">
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		<tr>
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		<td style="padding:0 0 0 +2ex"> <var style="background:#DDDDDD">membership-constant-URI</var> </td>
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		<td style="padding:0 0 0 +2ex"> <var>membership-predicate</var> </td>
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		<td style="padding:0 0 0 +2ex"> <var style="background:#CCFFFF">member-derived-URI</var> </td>
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		</tr>
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		<tr>
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		<td style="padding:0 0 0 +2ex"> <var style="background:#CCFFFF">member-derived-URI</var> </td>
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		<td style="padding:0 0 0 +2ex"> <var>membership-predicate</var> </td>
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		<td style="padding:0 0 0 +2ex"> <var style="background:#DDDDDD">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>rdfs:member</code> and <code>dcterms:isPartOf</code> are representative examples.
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		<p>
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		Each 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 LDPC's <a title="Membership triples">membership triples</a>.
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	<p></p></dd>
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	<dt><dfn>Non-member resource</dfn></dt>
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	<dd>A HTTP resource associated with a LDPC by a server for the purpose of enabling clients to
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	retrieve a subset of the LDPC's state, namely the subset that omits the LDPC's membership triples.
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	In other words, the union of the non-member resource's state and the LDPC's membership triples
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	exactly equals the LDPC's state.
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	<p></p></dd>
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	<dt><dfn>Paged resource</dfn></dt>
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	<dd>A resource whose representation may be too large to fit in a single HTTP response, for which an
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	LDP server offers a sequence of single-page resources.  When the representations of the sequence's resources
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	are combined by a client, the client has a (potentially incomplete or incoherent) copy of the paged resource's
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	state.  If a paged resource <var>P</var> is an LDPR and is broken into a sequence of pages
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	(single-page resources) <var>P<sub>1</sub>, P<sub>2</sub>, ...,P<sub>n</sub></var>,
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	the representation of each <var>P<sub>i</sub></var> contains
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	a subset of the triples in <var>P</var>.
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	LDP allows paging of resources other than LDPRs, but does not specify how clients combine
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	their representations.  See <a href="#ldpr-Paging" class="sectionRef"></a> for additional details.  For readers
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	familiar with paged feeds [[RFC5005]], a paged resource is similar to a logical feed.
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	Any resource could be considered to be a paged resource consisting of exactly one page, 
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	although there is no known advantage in doing so.
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	<p></p></dd>
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	<dt><dfn>Single-page resource</dfn></dt>
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	<dd>One of a sequence of related resources <var>P<sub>1</sub>, P<sub>2</sub>, ...,P<sub>n</sub></var>, 
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	each of which contains a subset of the state
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	of another resource <var>P</var>.  <var>P</var> is called the paged resource.
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	For readers
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	familiar with paged feeds [[RFC5005]], a single-page resource is similar to a feed document and the same
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	coherency/completeness considerations apply.
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	<a href="#ldpr-pagingGET-sequences-change">LDP provides no guarantees that the sequence is stable</a>.
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	<p>
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	Note: the choice of terms was designed to help authors and readers clearly differentiate between
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	the <a title="Paged resource"><em>resource being paged</em></a>, and the 
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	<a title="Single-page resource"><em>individual page resources</em></a>, 
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	in cases where both are mentioned in
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	close proximity.  
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	<p></p></dd>
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	<dt><dfn>first page link</dfn></dt>
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	<dd>A link to the first <a title="Single-page resource">single-page resource</a>
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	of a <a title="Paged resource">paged resource</a> <var>P</var>.  Syntactically, a
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	HTTP <code>Link &lt;<var>P<sub>1</sub></var>&gt;; rel='first'</code>
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	header [[!RFC5988]].
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	<p></p></dd>
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	<dt><dfn>next page link</dfn></dt>
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	<dd>A link to the next <a title="Single-page resource">single-page resource</a> 
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	of a <a title="Paged resource">paged resource</a> <var>P</var>.  Syntactically, a
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	HTTP <code>Link &lt;<var>P<sub>i</sub></var>&gt;; rel='next'</code>
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	header [[!RFC5988]] where the target URI is <var>P<sub>i=2...n</sub></var>.
412
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	<p></p></dd>
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	<dt><dfn>last page link</dfn></dt>
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	<dd>A link to the last <a title="Single-page resource">single-page resource</a>
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	of a <a title="Paged resource">paged resource</a> <var>P</var>.  Syntactically, a
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	HTTP <code>Link &lt;<var>P<sub>n</sub></var>&gt;; rel='last'</code>
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	header [[!RFC5988]].
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	<p></p></dd>
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	<dt><dfn>previous page link</dfn></dt>
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	<dd>A link to the previous <a title="Single-page resource">single-page resource</a> 
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	of a <a title="Paged resource">paged resource</a> <var>P</var>.  Syntactically, a
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	HTTP <code>Link &lt;<var>P<sub>i</sub></var>&gt;; rel='prev'</code>
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	header [[!RFC5988]] where the target URI is <var>P<sub>i=1...n-1</sub></var>.
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	<p></p></dd>
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  </dl>
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333
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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>
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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 rdf:     &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;.
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	@prefix rdfs:    &lt;http://www.w3.org/2000/01/rdf-schema#&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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<p>LDP uses the term <b><dfn>informative</dfn></b> as a synonym for non-normative.</p>
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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>informative</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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  <li>4. Linked Data Platform Resources: <b>normative</b></li>
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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>informative</b></li> 
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  <li>B.1 Normative references: <b>normative</b></li>
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  <li>B.2 Informative references: <b>informative</b></li>
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</ul>
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<div class="ldp-issue-closed">
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<p>(OLD) A conforming <b>LDP server</b> is an application program that processes HTTP requests 
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and generates HTTP responses that conform to the rules defined in
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<a href="#ldpr" class="sectionRef"></a> and <a href="#ldpc" class="sectionRef"></a>.
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</p>
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<p>(OLD) A conforming <b>LDP client</b> is an application program that generates HTTP 
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requests and processes HTTP responses that conform to the rules defined in <a href="#ldpr" class="sectionRef"></a>
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and <a href="#ldpc" class="sectionRef"></a>.
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</p>
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</div>
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   439
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<div class="ldp-issue-open">
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<p>(NEW) A conforming <b><dfn>LDP client</dfn></b> is a conforming HTTP client [[!HTTP11]] that follows the rules defined by LDP in
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<a href="#ldpclient" class="sectionRef"></a>.
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</p>
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<p>(NEW) A conforming <b><dfn>LDP server</dfn></b> is a conforming HTTP server [[!HTTP11]] that follows the rules defined by LDP in 
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<a href="#ldpr" class="sectionRef"></a> when it is serving LDPRs, and also
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<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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</div>
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</section>
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435
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<section id="ldpclient">
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<h1>Linked Data Platform Clients</h1>
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<div class="ldp-issue-open">
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<p>All of the following rules are just copied here, without change; still need to be removed from original section.
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Should consider making this section come before the server sections; doing so would cause mass-renumbering however.
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</p>
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</div>
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<section><h2>General</h2>
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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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		<a title="LDP client">LDP clients</a> MUST assume that any LDPR can have multiple values for <code>rdf:type</code>.
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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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		<a title="LDP client">LDP clients</a> MUST assume that the <code>rdf:type</code> values
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		of a given LDPR can change over time.
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	</h2></section> <!-- Was 4.3.6 / #ldpr-4_3_6 -->
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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
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		resource of a particular type at an arbitrary server is open, in the
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		sense that different resources of the same type may not all have the
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		same set of predicates in their triples, and the set of predicates that
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		are used in the state of any one resource is not limited to any pre-defined
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		set.
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	</h2></section> <!-- Was 4.5.3 / #ldpr-ldpr-4_5_3 -->
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   478
	
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	<section id="ldpr-cli-preservetriples"><h2 class="normal">A <a title="LDP client">LDP client</a> MUST preserve all triples retrieved using HTTP <code>GET</code> that
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		it doesn’t change whether it understands the predicates or not, when
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		its intent is to perform an update using HTTP <code>PUT</code>.  The use of HTTP
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		<code>PATCH</code> instead of HTTP <code>PUT</code> for update avoids this burden for clients
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   483
		[[RFC5789]].
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   484
	</h2></section> <!-- Was 4.5.5 / #ldpr-ldpr-4_5_5 -->
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</section>
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</section> <!-- Client constraints -->
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<section id="ldpr">
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<h1>Linked Data Platform Resources</h1>
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333
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<section class="informative" id="ldpr-informative">
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<h2>Informative</h2>
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	<p>Linked Data Platform Resources (<dfn><abbr title="Linked Data Platform Resources">LDPRs</abbr></dfn>) are HTTP resources
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		that conform to the simple patterns and conventions in this section.
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		HTTP requests to access, modify, create or delete LDPRs are accepted
372
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		and processed by <a title="LDP server">LDP servers</a>. Most LDPRs are domain-specific resources
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		that contain data for an entity in some domain, which could be
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		commercial, governmental, scientific, religious, or other.</p>
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	<p>Some of the rules defined in this document provide
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		clarification and refinement of the base Linked Data rules [[LINKED-DATA]];
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		others address additional needs.</p>
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   502
	<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
   503
		questions such as:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   504
	<ul>
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
   505
		<li>What resource representations should be used?</li>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   506
		<li>How is optimistic collision detection handled for updates?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   507
		<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
   508
				such as type changes?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   509
		<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
sspeiche
parents:
diff changeset
   510
				creation?</li>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   511
		<li>How	do I GET the entries of a large resources broken up into pages?</li>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   512
	</ul>
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
   513
	<p>Additional informative guidance is available on the <a
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
   514
			href="http://www.w3.org/2012/ldp/wiki/Deployment_Guide"
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
   515
			class="external "
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
   516
			title="Deployment Guide"
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
			rel="nofollow">working group's wiki</a> that addresses deployment
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
		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
   519
	<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
   520
		<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
   521
		<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
   522
	</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
   523
	<p>The following sections define the conformance rules for LDP servers when serving LDPRs.
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   524
		This document also explains <a href="#ldpr-Paging">how a server paginates an LDPR's representation</a> if it gets too big.
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   525
		Companion informative documents describe additional guidelines for use when interacting with LDPRs. 
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
   526
	</p>
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   527
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   528
</section>
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   529
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   530
<section id="ldpr-general">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   531
<h2>General</h2>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   532
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   533
	<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
   534
	</h2></section><!-- Was 4.2.1 / #ldpr-4_2_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   535
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   536
	<section id="ldpr-gen-rdf"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST provide an RDF representation for LDPRs. 
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   537
	The HTTP <code>Request-URI</code> of the LDPR 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
   538
	</h2></section><!-- Was 4.2.2 / #ldpr-4_2_2 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   539
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   540
	<section id="ldpr-gen-binary"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY host a mixture of LDPRs and non-LDPRs. For example, it
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   541
		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
   542
		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
   543
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   544
	<section id="ldpr-gen-reusevocab"><h2 class="normal">LDPRs 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
   545
		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
   546
		covered by other conformance rules.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   547
	</h2></section><!-- Was 4.2.4 / #ldpr-4_2_4 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   548
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   549
	<section id="ldpr-gen-reusevocabsuchas"><h2 class="normal">LDPR predicates SHOULD use standard vocabularies such as Dublin Core
188
8eaaca309617 Various editorial clean up items from editor todo list
sspeiche
parents: 187
diff changeset
   550
		[[!DC-TERMS]], RDF [[!RDF-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
   551
		possible.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   552
	</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
   553
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   554
	<section id="ldpr-gen-atleast1rdftype"><h2 class="normal">LDPR representations SHOULD have at least one <code>rdf:type</code>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   555
		set explicitly.  This makes the representations much more useful to
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   556
		client applications that don’t support inferencing.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   557
	</h2></section><!-- Was 4.2.5 / #ldpr-4_2_5 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   558
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   559
	<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
   560
		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
   561
	</h2></section><!-- Was 4.2.8 / #ldpr-4_2_8 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   562
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   563
	<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
   564
		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
   565
		MUST advertise their LDP support by exposing a HTTP <code>Link</code> header
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   566
		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
   567
		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
   568
		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
   569
		to the LDPR's HTTP <code>Request-URI</code>. 
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   570
	</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
   571
	<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
   572
		<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
   573
		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
   574
		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
   575
		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
   576
		This is <strong>not</strong> equivalent to the
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   577
		presence of a <var>(subject-URI, <code>rdf:type</code>, <code>ldp:Resource</code>)</var> triple in an RDF resource.
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   578
		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
   579
		HTTP interactions with LDPRs, that is
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   580
		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
   581
		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
   582
		</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
   583
		<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
   584
		Note: 
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   585
		<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
   586
		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
   587
		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
   588
		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
   589
		</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
   590
	</blockquote>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   591
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   592
	<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
   593
		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
   594
		of content defined by LDP.  Other specifications built on top of LDP may require clients
188
8eaaca309617 Various editorial clean up items from editor todo list
sspeiche
parents: 187
diff changeset
   595
		to implement inferencing [[!RDF-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
   596
		must be explicitly represented. 
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   597
	</h2></section><!-- Was 4.2.11 / #ldpr-4_2_11 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   598
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   599
	<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
   600
		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
   601
		<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
   602
		in the creation of a new resource.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   603
	</h2></section><!-- Was 4.2.12 / #ldpr-4_2_12 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   604
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   605
	<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
   606
		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
   607
		create or update LDPRs, by adding a Link header with <code>rel='describedby'</code> 
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   608
		[[!POWDER-DR]] to all responses to requests which fail due to violation of 
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   609
		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
   610
		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
   611
		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
   612
		The same <code>Link</code> header MAY be provided on other responses.  LDP neither 
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   613
		defines nor constrains the representation of the link's target resource; 
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   614
		as stated in [[POWDER-DR]], the target might (or might not) be a POWDER 
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   615
		document.  Natural language constraint documents are therefore permitted, 
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   616
		although machine-readable ones facilitate better client interactions.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   617
	</h2></section><!-- Was 4.2.13 / #ldpr-4_2_13 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   618
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   619
	<section id="ldpr-page-large"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD allow clients to retrieve large LDPRs in
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
   620
		pages.
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
   621
		See <a href="#ldpr-Paging" class="sectionRef"></a> for additional requirements associated with <a title="Paged resource">paged resources</a>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   622
	</h2></section><!-- Was 4.2.14 / #ldpr-4_2_14 -->
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-split-any"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY 
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
   625
		treat any resource (LDPR or not) as a <a title="Paged resource">paged resource</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
   626
		See <a href="#ldpr-Paging" class="sectionRef"></a> for additional details.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   627
	</h2></section><!-- Was 4.2.15 / #ldpr-4_2_15 -->
152
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   628
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   629
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   630
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   631
<section id="ldpr-HTTP_GET">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   632
<h2>HTTP GET</h2>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   633
	<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
   634
	</h2></section><!-- Was 4.3.1 / #ldpr-4_3_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   635
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   636
	<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
   637
		<a href="#ldpr-HTTP_OPTIONS" class="sectionRef"></a>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   638
	</h2></section><!-- Was 4.3.2 / #ldpr-4_3_2 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   639
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   640
	<section id="ldpr-get-turtle"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST provide a <code>text/turtle</code>
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
   641
		representation of the requested LDPR [[!TURTLE]].
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   642
	</h2></section><!-- Was 4.3.3 / #ldpr-4_3_3 -->
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-multitypes"><h2 class="normal">In the absence of special knowledge of the application or domain, 
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   645
		<a title="LDP client">LDP clients</a> MUST assume that any LDPR can have multiple values for <code>rdf:type</code>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   646
	</h2></section><!-- Was 4.3.5 / #ldpr-4_3_5 -->
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-typeschange"><h2 class="normal">In the absence of special knowledge of the application or domain, 
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   649
		<a title="LDP client">LDP clients</a> MUST assume that the <code>rdf:type</code> values
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
   650
		of a given LDPR can change over time.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   651
	</h2></section><!-- Was 4.3.6 / #ldpr-4_3_6 -->
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>
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   656
	<p>This specification adds no new requirements on HTTP <code>POST</code> for LDPRs 
200
aebd1e464817 Small editorial cleanup changes
John Arwe
parents: 199
diff changeset
   657
		even when the LDPR supports that method.  This specification does not impose any
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   658
		new requirement to support that method, and [[!HTTP11]] makes it optional.
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   659
	</p>
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   660
	<p>Clients can create LDPRs via <code>POST</code> (<a href="#ldpc-HTTP_POST" class="sectionRef"></a>) or
215
da72115eb40b Various updates per review of Raul
sspeiche
parents: 213
diff changeset
   661
		<code>PUT</code> (<a href="#ldpc-HTTP_PUT" class="sectionRef"></a>) to a LDPC, see those 
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   662
		sections for more details.  Any server-imposed constraints on LDPR creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   663
		<a href="#ldpr-gen-pubclireqs">must be advertised</a> to clients.
417
a7cdde712c1f Updated editor TODOs and a minor editorial updates
sspeiche
parents: 416
diff changeset
   664
	<!-- TODO: movethis content into an intro/overview section and add PATCH. -->
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   665
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   666
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   667
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   668
<section id="ldpr-HTTP_PUT">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   669
<h2>HTTP PUT</h2>
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   670
	<p>This specification imposes the following new requirements on HTTP <code>PUT</code> for LDPRs 
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
   671
		only when the LDPR supports that method.  This specification does not impose any
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   672
		new requirement to support that method, and [[!HTTP11]] makes it optional.
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   673
		Any server-imposed constraints on LDPR creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   674
		<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
   675
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   676
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   677
	<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
   678
		<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
   679
		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
   680
		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
   681
		<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
   682
		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
   683
		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
   684
		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
   685
		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
   686
		<code>PATCH</code>, not HTTP <code>PUT</code>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   687
	</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
   688
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   689
	<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
   690
		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
   691
		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
   692
		<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
   693
		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
   694
		409 Conflict). 
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   695
		<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
   696
		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
   697
		persisted.
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   698
		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
   699
	</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
   700
	<blockquote>
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   701
		Informative note: Clients might provide triples equivalent to those already in the resource's state,
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   702
		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
   703
		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
   704
	</blockquote>
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   705
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   706
	<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
   707
		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
   708
		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
   709
		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
   710
		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
   711
		(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
   712
		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
   713
		(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
   714
	</h2></section><!-- Was 4.5.2 / #ldpr-4_5_2 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   715
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   716
	<section id="ldpr-put-openpreds"><h2 class="normal"><a title="LDP client">LDP clients</a> SHOULD always assume that the set of predicates for a
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
   717
		resource of a particular type at an arbitrary server is open, in the
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   718
		sense that different resources of the same type may not all have the
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
   719
		same set of predicates in their triples, and the set of predicates that
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
   720
		are used in the state of any one resource is not limited to any pre-defined
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   721
		set.
416
166375df8bf8 Various editorial and validation fixes
sspeiche
parents: 415
diff changeset
   722
		<!-- TODO: This seems to fly in the face of systems that are closed, which we have many, which have a way to discover via some 
166375df8bf8 Various editorial and validation fixes
sspeiche
parents: 415
diff changeset
   723
		out of bands means. -->
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   724
	</h2></section><!-- Was 4.5.3 / #ldpr-4_5_3 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   725
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   726
	<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
   727
		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
   728
		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
   729
		<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
   730
		[[HTTP11]].  
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   731
		<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
   732
		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
   733
		persisted.
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   734
		The format of the 4xx response body is not constrained by LDP.
416
166375df8bf8 Various editorial and validation fixes
sspeiche
parents: 415
diff changeset
   735
		<!-- TODO: MUST respond with Link rel='describedBy' as in 4.2.13 -->
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   736
	</h2></section><!-- Was 4.5.4 / #ldpr-4_5_4 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   737
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   738
	<section id="ldpr-put-perserveall"><h2 class="normal">An <a title="LDP client">LDP client</a> MUST preserve all triples retrieved using HTTP <code>GET</code> that
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   739
		it doesn’t change whether it understands the predicates or not, when
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   740
		its intent is to perform an update using HTTP <code>PUT</code>.  The use of HTTP
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   741
		<code>PATCH</code> instead of HTTP <code>PUT</code> for update avoids this burden for clients
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   742
		[[RFC5789]].
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   743
	</h2></section><!-- Was 4.5.5 / #ldpr-4_5_5 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   744
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   745
	<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
   746
	</h2></section><!-- Was 4.5.6 / #ldpr-4_5_6 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   747
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   748
	<section id="ldpr-put-simpleupdate"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD allow clients to update resources without
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
   749
		requiring detailed knowledge of server-specific constraints.  
416
166375df8bf8 Various editorial and validation fixes
sspeiche
parents: 415
diff changeset
   750
		This is a consequence of the requirement to enable simple creation and modification of LPDRs.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   751
	</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
   752
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   753
		
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   754
<section id="ldpr-HTTP_DELETE">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   755
<h2>HTTP DELETE</h2>
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   756
	<p>This specification imposes the following new requirements on HTTP <code>DELETE</code> for LDPRs 
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
   757
		only when the LDPR supports that method.  This specification does not impose any
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
   758
		new requirement to support that method, and [[!HTTP11]] makes it optional.</p>
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   759
	<p>Additional requirements on HTTP <code>DELETE</code> of LDPRs within containers can be found in
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   760
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   761
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   762
<section id="ldpr-HTTP_HEAD">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   763
<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
   764
	<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
   765
		<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
   766
		Thus, implementers should also carefully read sections <a href="#ldpr-HTTP_GET"></a> 
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   767
		and <a href="#ldpr-HTTP_OPTIONS"></a>.</p>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   768
	<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
   769
	</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
   770
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   771
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   772
<section id="ldpr-HTTP_PATCH">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   773
<h2>HTTP PATCH</h2>
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   774
	<p>This specification imposes the following new requirements on HTTP <code>PATCH</code> for LDPRs 
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
   775
		only when the LDPR supports that method.  This specification does not impose any
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   776
		new requirement to support that method, and [[!HTTP11]] makes it optional.
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   777
		Any server-imposed constraints on LDPR creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   778
		<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
   779
	</p>	
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   780
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   781
	<section id="ldpr-patch-create"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD NOT allow clients to create new resources using <code>PATCH</code>.
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   782
		<a href="#ldpc-HTTP_POST"><code>POST</code> (to an LDPC)</a> and/or <a href="#ldpr-HTTP_PUT"><code>PUT</code></a> should be used as the standard way to create new LDPRs.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   783
	</h2></section><!-- Was 4.8.3 / #ldpr-4_8_3 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   784
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   785
	<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
   786
		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
   787
		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
   788
	</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
   789
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   790
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   791
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   792
<section id="ldpr-HTTP_OPTIONS">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   793
<h2>HTTP OPTIONS</h2>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   794
	<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
   795
		beyond those in [[!HTTP11]].  Other sections of this specification, for example 
167
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   796
		<a href="#ldpr-HTTP_PATCH">PATCH</a>,
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   797
		<a href="#header-accept-post">Accept-Post</a>
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   798
		and <a href="#ldpr-paging-HTTP_OPTIONS">Paging</a>,
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   799
		add other requirements on <code>OPTIONS</code> responses.
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   800
		</p>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   801
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   802
	<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
   803
	</h2></section><!-- Was 4.9.1 / #ldpr-4_9_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   804
		
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   805
	<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
   806
		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
   807
		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
   808
	</h2></section><!-- Was 4.9.2 / #ldpr-4_9_2 -->
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   809
		
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   810
</section>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   811
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   812
<section id="ldpr-Paging">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   813
<h2>Paging</h2>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   814
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   815
<section class="informative" id="ldpr-PagingIntro">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   816
<h3>Introduction</h3>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   817
	<p>It sometimes happens that a
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   818
		resource is too large to reasonably transmit its representation in a
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   819
		single HTTP response.  
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   820
		To address this problem, servers should support a technique called Paging.  
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   821
		When a client retrieves such a resource, the server includes in its response
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   822
		a link to the next part of the resource's state, at a URL of the server's choosing.
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
   823
		The triples in the representation of the each page of an LDPR
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   824
		are typically a subset of the triples in the resource.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   825
	</p>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   826
	<p><a title="LDP server">LDP servers</a> may respond to requests for a
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   827
		resource by returning the first page of the resource
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   828
		with a <code>Link &lt;next-page-URL&gt;;type='next'</code> header containing the URL for the next page.
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   829
		Clients inspect each response for the link header to see if additional pages
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   830
		are available; paging does not affect the choice of HTTP status code.
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   831
		Note that paging is lossy, as described in [[RFC5005]], and so (as stated there)
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   832
		clients should not make any assumptions about a set of pages being a complete or 
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   833
		coherent snapshot of a resource's state.</p>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   834
	<p>
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   835
		Looking at an example resource representing Example Co.'s customer
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
   836
		relationship data, identified by the URI <code>http://example.org/customer-relations</code>,
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
   837
		we’ll split the response across two pages.  
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   838
		The client 
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   839
		retrieves <code>http://example.org/customer-relations</code>, and
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   840
		the server responds with status code 200 (OK) and the following representation:
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   841
	</p>
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   842
419
afe7bcda2e56 + ids on remaining examples
Eric Prud'hommeaux <eric@w3.org>
parents: 418
diff changeset
   843
<pre class="example" id="ldpc-ex-page1"># The following is the representation of
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   844
#    http://example.org/customer-relations
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   845
#    Requests on the URI will result in responses that include the following HTTP header
402
935e1e08d2bb Fix some typos around paging, move to single quotes for link relations per 5988
John Arwe
parents: 395
diff changeset
   846
#       Link: &lt;http://example.org/customer-relations?p=2&gt;; rel='next'
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   847
#    This Link header is how clients discover the URI of the next page in sequence,
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   848
#    and that the resource supports paging.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   849
@prefix rdf: &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   850
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   851
@prefix foaf: &lt;http://xmlns.com/foaf/0.1/&gt;.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   852
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   853
@prefix o: &lt;http://example.org/ontology/&gt;.
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   854
@base &lt;http://example.org/customer-relations&gt;.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   855
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   856
&lt;&gt;
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   857
   a o:CustomerRelations;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   858
   dcterms:title "The customer information for Example Co.";
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   859
   o:client &lt;#JohnZSmith&gt;, &lt;#BettyASmith&gt;, &lt;#JoanRSmith&gt;. 
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   860
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   861
&lt;#JohnZSmith&gt;
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   862
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   863
   o:status o:ActiveCustomer;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   864
   foaf:name "John Z. Smith".
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   865
&lt;#BettyASmith&gt;
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   866
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   867
   o:status o:PreviousCustomer;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   868
   foaf:name "Betty A. Smith".
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   869
 &lt;#JoanRSmith&gt;
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   870
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   871
   o:status o:PotentialCustomer;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   872
   foaf:name "Joan R. Smith".</pre>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   873
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   874
	<p>
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   875
		Because the server includes a <code>Link: &lt;http://example.org/customer-relations?p=2&gt;; rel='next'</code>
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   876
		response header, the client knows that more data exists and where to find it.
232
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   877
		The server determines the size of the pages using application specific methods not defined
402
935e1e08d2bb Fix some typos around paging, move to single quotes for link relations per 5988
John Arwe
parents: 395
diff changeset
   878
		within this specificiation. The next page link's target URI is also
232
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   879
		defined by the server and not this specification.
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   880
	</p>
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   881
	<p>
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   882
		The following example is the result of retrieving
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   883
		the next page; 
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   884
		the server responds with status code 200 (OK) and the following representation:
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   885
	</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   886
419
afe7bcda2e56 + ids on remaining examples
Eric Prud'hommeaux <eric@w3.org>
parents: 418
diff changeset
   887
<pre class="example" id="ldpc-ex-page2"># The following is the representation of
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   888
#  http://example.org/customer-relations?p=2
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
   889
#
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
   890
#  There is no "next" Link in the server's response, so this is the final page.
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
   891
#
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   892
@prefix rdf: &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   893
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   894
@prefix foaf: &lt;http://xmlns.com/foaf/0.1/&gt;.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   895
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   896
@prefix o: &lt;http://example.org/ontology/&gt;.
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   897
@base &lt;http://example.org/customer-relations&gt;.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   898
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   899
&lt;&gt;
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   900
   o:client &lt;#GlenWSmith&gt;, &lt;#AlfredESmith&gt;. 
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   901
 
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   902
&lt;#GlenWSmith&gt;
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   903
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   904
   o:status o:ActiveCustomer, o:GoldCustomer;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   905
   foaf:name "Glen W. Smith".
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   906
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   907
&lt;#AlfredESmith&gt;
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   908
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   909
   o:status o:ActiveCustomer, o:BronzeCustomer;
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   910
   foaf:name "Alfred E. Smith".
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   911
 </pre>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   912
	<p>
215
da72115eb40b Various updates per review of Raul
sspeiche
parents: 213
diff changeset
   913
		In this example, there are only two customers provided in the
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   914
		final page.  To indicate this is the last page, the server omits the <code>Link: rel='next'</code> 
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
   915
		header in its response.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   916
	</p>
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   917
	<p>
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   918
		As mentioned above, retrieving all the pages offered by a server gives no guarantee to a client
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   919
		that it knows the entire state of the server.  For example, after the server constructs the
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   920
		the first page representation, another
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   921
		actor could delete <code>client#BettyASmith</code> from the server.  
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   922
	</p>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   923
</section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   924
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   925
<section id="ldpr-PagingGET">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   926
<h3>HTTP GET</h3>
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
   927
	<p>In addition to the requirements set forth in <a href="#ldpr-HTTP_GET" class="sectionRef"></a> on HTTP <code>GET</code>, 
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
   928
		<a title="LDP server">LDP servers</a> that support paging must 
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
   929
		also follow the requirements in this section for all <a title="Paged resource">paged resources</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
   930
		and their associated <a title="Single-page resource">single-page resources</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
   931
	</p>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   932
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   933
	<section id="ldpr-pagingGET-sequences-change"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   934
		add <a title="Single-page resource">single-page resources</a> to a 
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   935
		<a title="Paged resource">paged resource's</a> sequence over time,
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   936
		but SHOULD only add pages to the end of a sequence.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   937
		</h2><!-- Was 4.10.2.1 / #ldpr-pagingGET-sequences-change -->
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   938
		<blockquote>Informative note: 
414
a5d0c19a9474 remote-only respec whining
John Arwe
parents: 413
diff changeset
   939
		As a result, clients retrieving any <a title="Single-page resource">single-page resource</a> several times can observe its place in the sequence
413
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   940
		change as the state of the <a title="Paged resource">paged resource</a> changes.
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   941
		For example, a nominally last page's server might provide a
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   942
		<a>next page link</a> when the page is retrieved.  Similar situations arise when the page sequence crosses server boundaries; 
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   943
		server A might host the initial portion of a sequence that links to the last page server A is aware of,  
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   944
		hosted on server B, and server B might extend the sequence of pages.
55af75032d16 Fix respec messages that only show up on remote server, hit paging examples to remove appearance of inlining
John Arwe
parents: 412
diff changeset
   945
		</blockquote>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   946
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   947
		<section id="ldpr-pagingGET-first-allowed-onpages"><h2 class="normal">
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   948
			<a title="LDP server">LDP servers</a> MAY provide 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   949
			a <a>first page link</a> when responding to 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   950
			requests with any <a title="Single-page resource">single-page resource</a> as the <code>Request-URI</code>.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   951
		</h2></section><!-- Was 4.10.2.1.1 / #ldpr-pagingGET-sequences-change -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   952
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   953
		<section id="ldpr-pagingGET-last-allowed-onpages"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   954
			provide a <a>last page link</a>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   955
			in responses to <code>GET</code> requests with any <a title="Single-page resource">single-page resource</a> as the <code>Request-URI</code>.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   956
		</h2></section><!-- Was 4.10.2.1.3 / #ldpr-pagingGET-last-allowed-onpages -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   957
	</section>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   958
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   959
	<section id="ldpr-pagingGET-next-reqd"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   960
		provide a <a>next page link</a>
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
   961
		in responses to <code>GET</code> requests with any <a title="Single-page resource">single-page resource</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
   962
		<em>other than the final page</em>
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
   963
		as the <code>Request-URI</code>.
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
   964
		This is the mechanism by which clients can discover the URL of the next page. 
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   965
	</h2><!-- Was 4.10.2.2 / #ldpr-pagingGET-next-reqd-change -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   966
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   967
		<section id="ldpr-pagingGET-lastnext-prohibited"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST NOT
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   968
			provide a <a>next page link</a>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   969
			in responses to <code>GET</code> requests with the final <a title="Single-page resource">single-page resource</a> 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   970
			as the <code>Request-URI</code>.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   971
			This is the mechanism by which clients can discover the end of the page sequence
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   972
			as currently known by the server.  
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   973
		</h2></section><!-- Was 4.10.2.2.1 / #ldpr-pagingGET-lastnext-prohibited -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   974
		
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   975
		<section id="ldpr-pagingGET-prev-allowed"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   976
			provide a <a>previous page link</a>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   977
			in responses to <code>GET</code> requests with any <a title="Single-page resource">single-page resource</a>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   978
			<em>other than the first page</em>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   979
			as the <code>Request-URI</code>.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   980
			This is one mechanism by which clients can discover the URL of the previous page.  
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   981
		</h2></section><!-- Was 4.10.2.2.2 / #ldpr-pagingGET-prev-allowed -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   982
		
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   983
		<section id="ldpr-pagingGET-firstprev-prohibited"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST NOT
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   984
			provide a <a>previous page link</a>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   985
			in responses to <code>GET</code> requests with the <em>first</em> <a title="Single-page resource">single-page resource</a> 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   986
			as the <code>Request-URI</code>.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   987
			This is one mechanism by which clients can discover the beginning of the page sequence
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   988
			as currently known by the server.  
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   989
		</h2></section><!-- Was 4.10.2.2.3 / #ldpr-pagingGET-firstprev-prohibited -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   990
	</section>
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   991
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   992
	<section id="ldpr-pagingGET-page-type-reqd"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST
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
   993
		provide an HTTP <code>Link</code>
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
   994
		header whose target URI is <code>http://www.w3.org/ns/ldp#Page</code>, and whose link relation type is <code>type</code> [[!RFC5988]]
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
   995
		in responses to <code>GET</code> requests with any <a title="Single-page resource">single-page resource</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
   996
		as the <code>Request-URI</code>.
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
   997
		This is one mechanism by which clients know that the resource is one of a sequence of pages.  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   998
	</h2></section><!-- Was 4.10.2.4 / #ldpr-pagingGET-page-type-reqd -->
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   999
</section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
  1000
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1001
<section id="ldpr-paging-HTTP_OPTIONS">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1002
<h3>HTTP OPTIONS</h3>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
  1003
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
  1004
	<p>In addition to the requirements set forth in 
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
  1005
		<a href="#ldpr-HTTP_OPTIONS" class="sectionRef"></a> on HTTP <code>OPTIONS</code>, 
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
  1006
		<a title="LDP server">LDP servers</a> that support paging must also 
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
  1007
		follow the requirements in this section for all <a title="Paged resource">paged resources</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
  1008
		Note that LDP only requires enough from <code>OPTIONS</code> 
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
  1009
		for discovery of paging support on a resource, which is considerably
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
  1010
		less than is required for HTTP <code>GET</code>.  
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
  1011
		This lowers server implementation effort.
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
  1012
	</p>
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
  1013
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
  1014
</section> <!-- h3 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
  1015
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
  1016
</section> <!-- h2 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
  1017
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
  1018
</section> <!-- h1 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
  1019
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1020
<section id="ldpc">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1021
<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
  1022
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1023
<section class="informative" id="ldpc-informative">		
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1024
<h2>Informative</h2>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1025
	<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
  1026
		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
  1027
		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
  1028
		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
  1029
		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
  1030
		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
  1031
		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
  1032
		are:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1033
	<ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1034
		<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
  1035
		<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
  1036
		<li>How	is the order of the container entries expressed?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1037
		<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
  1038
		<li>How	can I ensure the resource data is easy to query?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1039
	</ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1040
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1041
		This document defines the representation and behavior of containers
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1042
		that address these issues. The set of members of a container is
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1043
		defined by a set of triples in its representation (and state) 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
  1044
		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
  1045
		(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
  1046
		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
  1047
		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
  1048
		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
  1049
		– 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
  1050
		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
  1051
		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
  1052
		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
  1053
		have to be. The membership predicate is also variable and will often
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1054
		be a predicate from the server application vocabulary or the <code>rdfs:member</code> predicate.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1055
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1056
	<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
  1057
		creating new resources and adding them to the list of
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
  1058
		members of 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
  1059
		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
  1060
		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
  1061
		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
  1062
		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
  1063
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1064
	<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
  1065
		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
  1066
		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
  1067
419
afe7bcda2e56 + ids on remaining examples
Eric Prud'hommeaux <eric@w3.org>
parents: 418
diff changeset
  1068
<pre class="example" id="ldpc-ex-simple"># The following is the representation of
74
30624f0a7534 Adding trailing '/' on Container URLs to help with readability based on WG suggestion
sspeiche
parents: 73
diff changeset
  1069
#    http://example.org/container1/
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
  1070
<!-- @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
  1071
# @base &lt;http://example.org/container1/&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1072
@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
  1073
@prefix rdfs: &lt;http://www.w3.org/2000/01/rdf-schema#&gt;.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1074
@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
  1075
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1076
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1077
   a ldp:Container;
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
  1078
   ldp:containerResource &lt;&gt; ;
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
  1079
   ldp:containsRelation rdfs:member;
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
  1080
   ldp:insertedContentRelation ldp:MemberSubject;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1081
   dcterms:title "A very simple container";
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1082
   rdfs:member &lt;member1&gt;, &lt;member2&gt;, &lt;member3&gt;.</pre>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1083
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1084
	<p>This example is very straightforward - the
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
  1085
			membership predicate is <code>rdfs:member</code> and the other
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
  1086
			consistent membership value is the container's
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
  1087
			URI, occurring in the subject position of the triples. 
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
  1088
			A POST to this container will create a new resource
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1089
			and add it to the list of members by adding a new membership triple
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1090
			to the container.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1091
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1092
	<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
  1093
	other than the container itself as the consistent membership value, and/or to use
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1094
	a predicate other than <code>rdfs:member</code> as the membership predicate. Let's
88
a02636c16f05 Fixed typo in new text
sspeiche
parents: 87
diff changeset
  1095
	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
  1096
			
233
37842c77d995 Fixed dup id problem in example
sspeiche
parents: 232
diff changeset
  1097
<pre class="example" id="ldpc-ex-membership-partial"># The following is a partial representation of
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1098
#   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
  1099
<!-- @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
  1100
# @base &lt;http://example.org/netWorth/nw1/&gt;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1101
@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
  1102
@prefix o: &lt;http://example.org/ontology/&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1103
&lt;&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1104
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1105
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1106
   o:asset 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1107
      &lt;assetContainer/a1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1108
      &lt;assetContainer/a2&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1109
   o:liability 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1110
      &lt;liabilityContainer/l1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1111
      &lt;liabilityContainer/l2&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1112
      &lt;liabilityContainer/l3&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1113
</pre>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1114
	<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
  1115
	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
  1116
	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
  1117
	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
  1118
	for them to assist with managing these, this is done by associating containers with them as 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1119
	illustrated below:
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1120
	</p>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1121
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1122
<pre class="example" id="ldpc-ex-membership-full"># The following is an elaborated representation of
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1123
#   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
  1124
<!-- @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
  1125
# @base &lt;http://example.org/netWorth/nw1/&gt;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1126
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1127
@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
  1128
@prefix o: &lt;http://example.org/ontology/&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1129
&lt;&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1130
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1131
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1132
   o:asset 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1133
      &lt;assetContainer/a1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1134
      &lt;assetContainer/a2&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1135
   o:liability 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1136
      &lt;liabilityContainer/l1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1137
      &lt;liabilityContainer/l2&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1138
      &lt;liabilityContainer/l3&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1139
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1140
&lt;assetContainer/&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1141
   a ldp:Container;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1142
   dcterms:title "The assets of JohnZSmith";
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
  1143
   ldp:containerResource &lt;&gt;;
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
  1144
   ldp:containsRelation o:asset;
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
  1145
   ldp:insertedContentRelation ldp:MemberSubject.
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1146
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1147
&lt;liabilityContainer/&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1148
   a ldp:Container;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1149
   dcterms:title "The liabilities of JohnZSmith";
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
  1150
   ldp:containerResource &lt;&gt;;
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
  1151
   ldp:containsRelation o:liability;
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
  1152
   ldp:insertedContentRelation ldp:MemberSubject.
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1153
</pre>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1154
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1155
	<p>The essential structure of the container is
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
  1156
	the same, but in this example, the consistent membership value (still in the subject position) is not the
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1157
	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
  1158
	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
  1159
	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
  1160
	asset and add it to the list of	members by adding a new membership triple
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1161
	to the container. You might wonder why
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1162
	<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
  1163
	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
  1164
	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
  1165
	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
  1166
	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
  1167
	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
  1168
	resources allows both assets and liabilities to be created.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1169
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1170
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1171
<pre class="example" id="ldpc-ex-membership-subj"># The following is the representation of
74
30624f0a7534 Adding trailing '/' on Container URLs to help with readability based on WG suggestion
sspeiche
parents: 73
diff changeset
  1172
#   http://example.org/netWorth/nw1/assetContainer/
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
  1173
<!-- @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
  1174
# @base &lt;http://example.org/netWorth/nw1/assetContainer/&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1175
@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
  1176
@prefix o: &lt;http://example.org/ontology/&gt;.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1177
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1178
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1179
   a ldp:Container;
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
  1180
   ldp:containerResource &lt;http://example.org/netWorth/nw1&gt;;
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
  1181
   ldp:containsRelation o:asset;
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
  1182
   ldp:insertedContentRelation ldp:MemberSubject.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1183
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1184
&lt;http://example.org/netWorth/nw1&gt;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1185
   a o:NetWorth;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1186
   o:asset &lt;a1&gt;, &lt;a2&gt;.</pre>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1187
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
  1188
	<p>In this example, clients cannot correctly guess
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
  1189
			at the membership triples, so the example includes this information in
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1190
			triples whose subject is the LDPC resource itself.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1191
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1192
	
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1193
	<section id="ldpc-get_non-member_props"><h2 class="normal">Retrieving Only Non-member Properties
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1194
	</h2><!-- Was 5.1.1 / #ldpc-get_non-member_props -->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1195
	<p>The representation of a container
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1196
		that has many members will be large. There are several important
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1197
		cases where clients need to access only the non-member properties of
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1198
		the container. Since retrieving the whole container representation to
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1199
		get this information may be onerous for clients and cause unnecessary
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1200
		overhead on servers, it is desired to define a way to retrieve only
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1201
		the non-member property values. Defining for each LDPC a corresponding
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1202
		resource, called the “<a>non-member resource</a>”, whose state is a subset
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1203
		of the state of the container, does this.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1204
	<p>The example listed here only show
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1205
		a simple case where only a few simple non-member properties are
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1206
		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
  1207
		containers, for example providing validation information and
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1208
		associating SPARQL endpoints. [[SPARQL-QUERY]]</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1209
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1210
		Here is an example requesting the non-member properties of a
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1211
		container identified by the URL <code>http://example.org/container1/</code>.
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1212
		In this case, the non-member resource is identified by the URL 
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1213
		<code>http://example.org/container1?non-member-properties</code>:
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1214
	</p>
419
afe7bcda2e56 + ids on remaining examples
Eric Prud'hommeaux <eric@w3.org>
parents: 418
diff changeset
  1215
<p id="ldpc-ex-non-member">Request:</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1216
<pre class="example">GET /container1?non-member-properties HTTP/1.1
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1217
Host: example.org
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1218
Accept: text/turtle; charset=UTF-8
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1219
</pre>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1220
<p>Response:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1221
<pre class="example">HTTP/1.1 200 OK
13
eea17080fdf2 Minor typo fix and some notes
sspeiche
parents: 12
diff changeset
  1222
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
  1223
ETag: "_87e52ce291112"
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1224
Content-Length: 325
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
  1225
Link: &lt;http://www.w3.org/ns/ldp/Container&gt;; rel="type"
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1226
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1227
@prefix rdfs: &lt;http://www.w3.org/2000/01/rdf-schema#&gt;.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1228
@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
  1229
@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
  1230
74
30624f0a7534 Adding trailing '/' on Container URLs to help with readability based on WG suggestion
sspeiche
parents: 73
diff changeset
  1231
&lt;http://example.org/container1/&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1232
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1233
   dcterms:title "A Linked Data Platform Container of Acme Resources";
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
  1234
   ldp:containerResource &lt;http://example.org/container1/&gt;;
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
  1235
   ldp:containsRelation rdfs:member;
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
  1236
   ldp:insertedContentRelation ldp:MemberSubject;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1237
   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
  1238
   
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1239
	<p>While the same non-member resource could be used to update the non-member properties via PUT,
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1240
		LDP recommends using PATCH for this purpose.</p>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1241
		
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1242
	</section><!-- ldpc-get_non-member_props -->
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1243
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1244
	<section id="ldpc-ordering"><h2 class="normal">Ordering</h2>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1245
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1246
		There are many cases where an ordering of the members of the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1247
		container is important. LDPC does not provide any particular support
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1248
		for server ordering of members in containers, because any client can
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1249
		order the members in any way it chooses based on the value of any
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1250
		available property of the members. In the example below, the value of
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1251
		the <code>o:value</code> predicate is present for each
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1252
		member, so the client can easily order the members according to the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1253
		value of that property. In this way, LDPC avoids the use of RDF
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1254
		constructs like Seq and List for expressing order.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1255
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1256
	<p>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
  1257
		Order becomes more important for <a title="LDP server">LDP servers</a> when containers are
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1258
		paginated. If the server does not respect ordering when constructing
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1259
		pages, the client would be forced to retrieve all pages before
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1260
		sorting the members, which would defeat the purpose of pagination. 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1261
		In cases where ordering is important, an LDPC server exposes all the
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1262
		members on a page with the proper sort order with relation to all 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1263
		members on the next and previous pages.
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1264
		When the sort is ascending, all the members on a current page have a 
311
02a6e18eaec6 tweak informative text around sort order in response to offline comments. the old language implied pages were strictly ordered, which ignores the case of equal sort ranked members that fill/span several pages.
John Arwe
parents: 309
diff changeset
  1265
		sort order no lower than all members on the previous page and 
02a6e18eaec6 tweak informative text around sort order in response to offline comments. the old language implied pages were strictly ordered, which ignores the case of equal sort ranked members that fill/span several pages.
John Arwe
parents: 309
diff changeset
  1266
		sort order no higher than all the members on the next page; 
02a6e18eaec6 tweak informative text around sort order in response to offline comments. the old language implied pages were strictly ordered, which ignores the case of equal sort ranked members that fill/span several pages.
John Arwe
parents: 309
diff changeset
  1267
		that is, it proceeds from low to high, but keep in mind that several 
02a6e18eaec6 tweak informative text around sort order in response to offline comments. the old language implied pages were strictly ordered, which ignores the case of equal sort ranked members that fill/span several pages.
John Arwe
parents: 309
diff changeset
  1268
		consecutive pages might have members whose sort criteria are equal. 
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1269
		When the sort is descending, the opposite order is used. 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1270
		Since more than one value may be used to sort members, 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1271
		the LDPC specification allows servers to assert the ordered list
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1272
		of sort criteria used to sort the members, using the 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1273
		<code>ldp:containerSortCriteria</code> relation.
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1274
		Each member of the ordered list exposes one <code>ldp:containerSortCriterion</code>, 
212
97ac8b356958 Fixed a couple typos in 5.1.4
sspeiche
parents: 211
diff changeset
  1275
		consisting of a <code>ldp:containerSortOrder</code>, 
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1276
		<code>ldp:containerSortPredicate</code>, and 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1277
		optionally a <code>ldp:containerSortCollation</code>.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1278
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1279
	<p>Here is an example container described
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1280
		previously, with representation for ordering of the assets:</p>
419
afe7bcda2e56 + ids on remaining examples
Eric Prud'hommeaux <eric@w3.org>
parents: 418
diff changeset
  1281
<pre class="example" id="ldpc-ex-ordering"># The following is the ordered representation of
74
30624f0a7534 Adding trailing '/' on Container URLs to help with readability based on WG suggestion
sspeiche
parents: 73
diff changeset
  1282
#   http://example.org/netWorth/nw1/assetContainer/
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
  1283
<!-- @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
  1284
# @base &lt;http://example.org/netWorth/nw1/assetContainer/&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1285
@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
  1286
@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
  1287
@prefix o: &lt;http://example.org/ontology/&gt;.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1288
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1289
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1290
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1291
   dcterms:title "The assets of JohnZSmith";
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
  1292
   ldp:containerResource &lt;http://example.org/netWorth/nw1&gt;;
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
  1293
   ldp:containsRelation o:asset;
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
  1294
   ldp:insertedContentRelation ldp:MemberSubject.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1295
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1296
&lt;?firstPage&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1297
   a ldp:Page;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1298
   ldp:pageOf &lt;&gt;;
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
  1299
   ldp:containerSortCriteria (&lt;#SortValueAscending&gt;).
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1300
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1301
&lt;#SortValueAscending&gt;
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1302
   a ldp:ContainerSortCriterion;
226
0e1efef6e333 Changed ldp:ascending->ldp:Ascending, ldp:descending->ldp:Descending, ldp:non-member-resource ->ldp:nonMemberResource
sspeiche
parents: 225
diff changeset
  1303
   ldp:containerSortOrder ldp:Ascending;
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1304
   ldp:containerSortPredicate o:value.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1305
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1306
&lt;http://example.org/netWorth/nw1&gt;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1307
   a o:NetWorth;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1308
   o:asset &lt;a1&gt;, &lt;a3&gt;, &lt;a2&gt;.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1309
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1310
&lt;a1&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1311
   a o:Stock;
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
  1312
   o:value 100.00 .
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1313
&lt;a2&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1314
   a o:Cash;
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
  1315
   o:value 50.00 .
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1316
&lt;a3&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1317
   a o:RealEstateHolding;
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
  1318
   o:value 300000 .</pre>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1319
		<p>
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1320
			As you can see by the addition of the <code>ldp:ContainerSortCriteria</code> 
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1321
			predicate, the <code>o:value</code> predicate is used
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1322
			to order the page members in ascending order.  It is up to the domain model
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1323
			and server to determine the appropriate predicate to indicate the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1324
			resource’s order within a page, and up to the client receiving this 
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1325
			representation to use that order in whatever way is appropriate, for 
427
9680ab51d5fa ACTION-100 Added informative note to Ordering section that containers can be nested
sspeiche
parents: 419
diff changeset
  1326
			example to sort the data prior to presentation on a user interface. Also
9680ab51d5fa ACTION-100 Added informative note to Ordering section that containers can be nested
sspeiche
parents: 419
diff changeset
  1327
			as it is possible for a container to have as its members other containers,
9680ab51d5fa ACTION-100 Added informative note to Ordering section that containers can be nested
sspeiche
parents: 419
diff changeset
  1328
			the ordering approach doesn't change as containers themselves are LDPRs and the
9680ab51d5fa ACTION-100 Added informative note to Ordering section that containers can be nested
sspeiche
parents: 419
diff changeset
  1329
			properties from the domain model can be leveraged for the sort criteria.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1330
		</p>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1331
	</section><!-- Was 5.1.2 / #ldpc-ordering -->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1332
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1333
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1334
<section id="ldpc-general">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1335
<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
  1336
	<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
  1337
		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
  1338
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1339
	<section id="ldpc-isldpr"><h2 class="normal">Each Linked Data Platform Container MUST also be 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1340
		a conforming Linked Data Platform Resource.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1341
	</h2></section><!-- Was 5.2.1 / #ldpc-5_2_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1342
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1343
	<section id="ldpc-mbrpred"><h2 class="normal"><a title="LDP server">LDP servers</a>
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
  1344
		SHOULD use the <code>rdfs:member</code> predicate as an LDPC's <a title="Membership predicate">membership predicate</a>
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
  1345
		if there is no obvious predicate from an application vocabulary to use.
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
  1346
		The state of an LDPC includes information about which
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
  1347
		resources are its members, in the form of <a title="Membership triples">membership triples</a> that
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
  1348
		follow a consistent pattern.  The LDPC's state contains enough information for clients to discern
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
  1349
		the <a title="Membership predicate">membership predicate</a>, the other consistent membership
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
  1350
		value used in the container's membership triples (<var>membership-constant-URI</var>), 
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
  1351
		and the position (subject or object) where those URIs
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
  1352
		occurs in the <a title="Membership triples">membership triples</a>.
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
  1353
		Member resources can be
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
  1354
		any kind of resource identified by a URI, LDPR or otherwise.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1355
	</h2></section><!-- Was 5.2.3 / #ldpc-5_2_3 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1356
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1357
	<section id="ldpc-containres"><h2 class="normal">An LDPC representation MUST contain exactly one triple 
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1358
		whose subject is the LDPC URI, 
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
  1359
		whose predicate is the <code>ldp:containerResource</code>, 
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
  1360
		and whose object is the LDPC's membership-constant-URI.
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
  1361
		Commonly the LDPC's URI is the membership-constant-URI, but LDP does not require this.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1362
	</h2></section><!-- Was 5.2.4 / #ldpc-5_2_4 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1363
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1364
	<section id="ldpc-containtriples"><h2 class="normal">An LDPC representation MUST contain exactly one triple 
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1365
		whose subject is the LDPC URI, 
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
  1366
		and whose predicate is either <code>ldp:containsRelation</code> or <code>ldp:containedByRelation</code>. 
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1367
		The object of the triple is constrained by other sections, such as
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1368
		<a href="#ldpc-containtriple-relation" class="sectionRef">ldp:containsRelation</a> or 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1369
		<a href="#ldpc-containtriple-byrelation" class="sectionRef">ldp:containedByRelation</a>, based on the 
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
  1370
		<a title="Membership triples">membership triple</a> 
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
  1371
		pattern used by the container.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1372
	</h2><!-- Was 5.2.5 / #ldpc-5_2_5 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1373
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
  1374
	<section id="ldpc-containtriple-relation"><h2 class="normal">LDPCs whose <a title="Membership triples">membership triple</a> 
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
  1375
		pattern is <var>( membership-constant-URI , membership-predicate , member-derived-URI )</var> MUST
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
  1376
		contain exactly one triple
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
  1377
		whose subject is the LDPC URI, 
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
  1378
		whose predicate is either <code>ldp:containsRelation</code>, 
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
  1379
		and whose object is the URI of <var>membership-predicate</var>.