ldp.html
author John Arwe
Tue, 22 Oct 2013 14:50:32 -0400
changeset 386 b7c514f96add
parent 385 9686ab858357
child 387 85cebac44f86
permissions -rw-r--r--
Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
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<!DOCTYPE html>
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<!-- 
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 Editor TODO:
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   - Once companion documents 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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   - The word "canonical" is used twice in the document. Since we do not deal with URI 
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     canonicalization in the specification, I would remove the word and the meaning of 
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     the sentences is the same.
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   - section 4.6...respec is adding extra spaces to the sectionRefs
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	  carefully read section 4.2 .
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	  ->
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	  carefully read section 4.2.
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	  defined in section 4.8 .
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	  ->
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	  defined in section 4.8.
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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:membershipPredicate, 
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	  5.2.5.2 For a given triple T with a subject C of the LDPC and predicate of ldp:membershipPredicateInverse, 
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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 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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          // 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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			},
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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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    </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 that you 
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	should use when constructing clients and servers that 
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	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 also provides a widely re-usable pattern to deal with large RDF resources.  
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	Depending on the server’s capabilities, a GET request on a <a>Linked Data Platform Resource</a> can
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	return a subset of the resource (one page), that provides access to subsequent pages 
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	(see <a href="#ldpr-Paging" class="sectionRef"></a>). </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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</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 same-subject, same-predicate triples 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-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-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-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 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-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>Page resource</dfn></dt>
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	<dd>A type of LDPR that is associated with another LDPR <var>R</var>, whose representation 
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	includes a subset of the triples in <var>R</var>.
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	<p></p></dd>
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	<dt><dfn>Non-member resource</dfn></dt>
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	<dd>A 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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  </dl>
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<section id="conventions">
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<h2>Conventions Used in This Document</h2>
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	<p>Sample resource representations are provided in <code>text/turtle</code>
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		format [[TURTLE]].</p>
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	<p>Commonly used namespace prefixes:</p>
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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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<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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<p>(NEW) LDP defines several classes of LDP servers, and places different conformance requirements on each of them.
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NOTE: "Basic" and "advanced" used here for drafting purposes; they correspond to 'vanilla' and 'chocolate', respectively.
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Final names TBD.
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</p>
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<ul>
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  <li><p>A conforming <b><dfn>basic LDP server</dfn></b> is a conforming LDP server that follows the rules defined by LDP
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  for basic LDP servers, as shown below.  Its content model is generally open and the server typically stores triples on behalf of clients
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   391
  with minimal (if any) restrictions.
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   392
  </p></li>
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  <li><p>A conforming <b><dfn>advanced LDP server</dfn></b> is a conforming LDP server that follows the rules defined by LDP
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  for advanced LDP servers, as shown below.  Its content model can be open or closed, and the server may impose non-trivial
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   395
  restrictions on triples stored on behalf of conforming HTTP clients.
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   396
  </p></li>
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   397
</ul>
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diff changeset
   398
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   399
<section>
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   400
<h5>Example conformance rules</h5>
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   401
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<p>The following informative examples show how LDP assigns conformance criteria to each class of LDP servers using a single rule.</p>
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   403
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   404
<section>
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   405
<h6>Example: the same criteria apply to both basic and advanced LDP servers</h6>
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<div class="example">
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	<div class="rule">LDP servers SHOULD ...  </div>
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   408
</div>
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   409
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<p>The preceding rule is equivalent to the following pair of rules:</p>
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   411
<div class="example">
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   412
	<div class="rule">Basic LDP servers SHOULD ...  </div>
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   413
	<div class="rule">Advanced LDP servers SHOULD ...  </div>
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   414
</div>
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   415
</section>
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diff changeset
   416
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   417
<section>
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   418
<h6>Example: different criteria apply to basic and advanced LDP servers</h6>
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<p>Trying out different ways of covering each class while minimizing text duplication here.  Final format TBD.</p>
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   420
<div class="example">
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   421
	<div class="rule">(proposal 1) LDP servers MUST (basic)/SHOULD (advanced) ... </div>
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   422
	<div class="rule">(proposal 2) Basic LDP servers MUST, and advanced LDP servers SHOULD, ... </div>
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   423
	<div class="rule">(proposal 3) Basic LDP servers MUST ... .  Advanced LDP servers SHOULD do so. </div>
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   424
</div>
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diff changeset
   425
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   426
<p>Each of the preceding rules is equivalent to the following pair of rules:</p>
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   427
<div class="example">
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   428
	<div class="rule">4.8.2 Basic LDP servers MUST ...
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   429
	</div>
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   430
	<div class="rule">4.8.2 Advanced LDP servers SHOULD  ...
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   431
	</div>
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   432
</div>
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   433
</section>
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diff changeset
   434
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   435
</div>
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   436
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
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   437
</section>
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diff changeset
   438
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333
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   440
<section id="ldpr">
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   441
<h1>Linked Data Platform Resources</h1>
222
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   442
333
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   443
<section class="informative" id="ldpr-informative">
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   444
<h2>Informative</h2>
33
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
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   445
	<p>Linked Data Platform Resources (<dfn><abbr title="Linked Data Platform Resources">LDPRs</abbr></dfn>) are HTTP resources
12
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   446
		that conform to the simple patterns and conventions in this section.
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   447
		HTTP requests to access, modify, create or delete LDPRs are accepted
372
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   448
		and processed by <a title="LDP server">LDP servers</a>. Most LDPRs are domain-specific resources
12
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   449
		that contain data for an entity in some domain, which could be
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   450
		commercial, governmental, scientific, religious, or other.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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diff changeset
   451
	<p>Some of the rules defined in this document provide
33
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
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		clarification and refinement of the base Linked Data rules [[LINKED-DATA]];
12
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   453
		others address additional needs.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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   454
	<p>The rules for Linked Data Platform Resources address basic
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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   455
		questions such as:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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diff changeset
   456
	<ul>
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38d1a7faf1c4 Various editorial comments from PA
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   457
		<li>What resource representations should be used?</li>
12
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diff changeset
   458
		<li>How is optimistic collision detection handled for updates?</li>
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diff changeset
   459
		<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
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   460
				such as type changes?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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   461
		<li>What can servers do to ease the burden of constraints for resource
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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   462
				creation?</li>
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   463
		<li>How	do I GET the entries of a large resources broken up into pages?</li>
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   464
	</ul>
37
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   465
	<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
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   466
			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
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parents: 33
diff changeset
   467
			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
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diff changeset
   468
			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
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parents: 33
diff changeset
   469
			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
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diff changeset
   470
		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
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parents: 33
diff changeset
   471
	<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
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diff changeset
   472
		<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
   473
		<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
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diff changeset
   474
	</ul>
373
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diff changeset
   475
	<p>The following sections define the conformance rules for LDP servers when serving LDPRs.
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
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   476
		This document also explains how to paginate an LDPR's representation if it gets too big.
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
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diff changeset
   477
		Companion documents describe additional guidelines for use when interacting with LDPRs. 
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
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diff changeset
   478
	</p>
222
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diff changeset
   479
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
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diff changeset
   480
</section>
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
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parents: 221
diff changeset
   481
333
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diff changeset
   482
<section id="ldpr-general">
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diff changeset
   483
<h2>General</h2>
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   484
		
372
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diff changeset
   485
	<div id="ldpr-4_2_1" class="rule">4.2.1 <a title="LDP server">LDP servers</a> MUST at least be HTTP/1.1 conformant servers [[!HTTP11]].</div>
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diff changeset
   486
	<div id="ldpr-4_2_2" class="rule">4.2.2 <a title="LDP server">LDP servers</a> MUST provide an RDF representation for LDPRs. 
192
221002315344 Removed 4.1.5 and various formatting issues
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diff changeset
   487
	The HTTP <code>Request-URI</code> of the LDPR is typically the subject of most triples in the response.
12
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diff changeset
   488
	</div>
372
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diff changeset
   489
	<div id="ldpr-4_2_3" class="rule">4.2.3 <a title="LDP server">LDP servers</a> MAY host a mixture of LDPRs and non-LDPRs. For example, it
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
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diff changeset
   490
		is common for <a title="LDP server">LDP servers</a> to need to host binary or text resources
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   491
		that do not have useful RDF representations.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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diff changeset
   492
	</div>
69
0f9825dea52b Updating some simple formatting, reorganizing open issues and todos
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parents: 68
diff changeset
   493
222
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parents: 221
diff changeset
   494
	<div id="ldpr-4_2_4" class="rule">4.2.4 LDPRs SHOULD reuse existing vocabularies instead of creating
33
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parents: 21
diff changeset
   495
		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
   496
		covered by other conformance rules.
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
   497
	</div>
222
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sspeiche
parents: 221
diff changeset
   498
	<div id="ldpr-4_2_4_1" class="rule">4.2.4.1 LDPR predicates SHOULD use standard vocabularies such as Dublin Core
188
8eaaca309617 Various editorial clean up items from editor todo list
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diff changeset
   499
		[[!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
   500
		possible.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
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   501
	</div>
222
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parents: 221
diff changeset
   502
	<div id="ldpr-4_2_5" class="rule">4.2.5 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
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parents:
diff changeset
   503
		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
   504
		client applications that don’t support inferencing.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   505
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   506
	<!-- Action-108 removed this 2013-10-22
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
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diff changeset
   507
	<div id="ldpr-4_2_6" class="rule">4.2.6 <a title="LDP server">LDP servers</a> MAY support standard representations beyond those
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
   508
		necessary to conform to this specification. These
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   509
		could be other RDF formats, like N3 or NTriples, but non-RDF formats
182
08403f15f875 ISSUE-44 move section 4.1.7 (relationships are simple RDF links) to guidance
sspeiche
parents: 181
diff changeset
   510
		like HTML [[!HTML401]] and JSON [[!RFC4627]] would likely be common.
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   511
	</div>		
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   512
	-->
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   513
	<!-- Action-108 removed this 2013-10-22
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   514
	<div id="ldpr-4_2_7" class="rule">4.2.7 LDPRs MAY be created, updated and deleted using methods not defined in
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   515
		this document, for example through application-specific means, SPARQL
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
   516
		UPDATE, etc. [[!SPARQL-UPDATE]], as long as those methods do not conflict with this specification's 
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
   517
		normative requirements.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   518
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   519
	-->
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   520
	<div id="ldpr-4_2_8" class="rule">4.2.8 <a title="LDP server">LDP server</a> responses MUST use entity tags (either weak or strong 
60
97516e223fb8 ISSUE-10 - 4.1.12 to be MUST use entity tags (either weak or strong ones)
sspeiche
parents: 58
diff changeset
   521
ones) as response <code>ETag</code> header values.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   522
	</div>
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   523
	<div id="ldpr-4_2_9" class="rule">4.2.9 LDPR
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
   524
		servers SHOULD enable simple creation and modification of LDPRs.
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
   525
		It is
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   526
		common for <a title="LDP server">LDP servers</a> to put restrictions on representations – for
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
   527
		example, the range of <code>rdf:type</code> predicates, datatypes of
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
   528
		the objects of predicates, and the number of occurrences of predicates in an LDPR, but
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
   529
		servers SHOULD minimize those restrictions.  Enforcement of
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
   530
		more complex constraints will greatly restrict the set of 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
   531
		that can modify resources. For some server applications, excessive
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
   532
		constraints on modification of resources may be required.
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
   533
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   534
	<div id="ldpr-4_2_10" class="rule">4.2.10 <a title="LDP server">LDP servers</a>
149
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   535
		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
   536
		with a target URI of <code>http://www.w3.org/ns/ldp/Resource</code>, and
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   537
		a link relation type of <code>type</code> (that is, <code>rel="type"</code>)
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   538
		in all responses to requests made 
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   539
		to the resource's HTTP <code>Request-URI</code>. This is notionally equivalent to the
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   540
		presence of a <var>(subject-URI, <code>rdf:type</code>, <code>ldp:Resource</code>)</var> triple in the resource.
200
aebd1e464817 Small editorial cleanup changes
John Arwe
parents: 199
diff changeset
   541
		The HTTP <code>Link</code> header is the method by which servers assert their support for the LDP specification in a way
149
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   542
		that clients can introspect dynamically at run-time.  Conservative clients should note that 
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   543
		<a href="#ldpr-4_2_3">a 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
   544
		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
   545
		resources on the same server are also LDPRs.  Each HTTP <code>Request-URI</code> needs to be 
149
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   546
		individually introspected by a conservative client, in the absence of outside information.
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   547
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   548
	<div id="ldpr-4_2_11" class="rule">4.2.11 <a title="LDP server">LDP servers</a>
152
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   549
		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
   550
		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
   551
		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
   552
		must be explicitly represented. 
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   553
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   554
	<div id="ldpr-4_2_12" class="rule">4.2.12 <a title="LDP server">LDP servers</a> MUST assign the default 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
   555
		<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
   556
		in the creation of a new resource.
39ca65760446 Removed 5.4.8.1 and added 4.2.12 to better handle base/rel URI
sspeiche
parents: 223
diff changeset
   557
	</div>
152
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   558
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   559
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   560
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   561
<section id="ldpr-HTTP_GET">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   562
<h2>HTTP GET</h2>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   563
	<div id="ldpr-4_3_1" class="rule">4.3.1 <a title="LDP server">LDP servers</a> MUST support the HTTP <code>GET</code> Method for LDPRs.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   564
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   565
	<div id="ldpr-4_3_2" class="rule">4.3.2 <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
   566
		<a href="#ldpr-HTTP_OPTIONS" class="sectionRef"></a>.
ec118c66c122 Moved 4.7.2 (from HEAD) to 4.3.2 (GET), shifted rest of GET section by one
sspeiche
parents: 227
diff changeset
   567
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   568
	<div id="ldpr-4_3_3" class="rule">4.3.3 <a title="LDP server">LDP servers</a> SHOULD 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
   569
		representation of the requested LDPR [[!TURTLE]].
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   570
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   571
	<!-- Action-108 removed this 2013-10-22
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   572
	<div id="ldpr-4_3_4" class="rule">4.3.4 <a title="LDP server">LDP servers</a> MAY provide 
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
   573
		representations of the requested LDPR beyond those
232
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   574
		necessary to conform to this specification, using standard HTTP content negotiation ([[!HTTP11]] Section 12 - Content Negotiation). 
220
ff8b1635f35a ISSUE-53 4.2.3 changed MUST to SHOULD
sspeiche
parents: 216
diff changeset
   575
		If the client does not indicate a preference, <code>text/turtle</code> SHOULD be returned.
69
0f9825dea52b Updating some simple formatting, reorganizing open issues and todos
sspeiche
parents: 68
diff changeset
   576
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   577
	-->
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   578
	<div id="ldpr-4_3_5" class="rule">4.3.5 In the absence of special knowledge of the application or domain, 
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   579
		<a title="LDP client">LDP clients</a> MUST assume that any LDPR can have multiple values for <code>rdf:type</code>.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   580
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   581
	<div id="ldpr-4_3_6" class="rule">4.3.6 In the absence of special knowledge of the application or domain, 
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   582
		<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
   583
		of a given LDPR can change over time.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   584
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   585
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   586
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   587
<section id="ldpr-HTTP_POST">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   588
<h2>HTTP POST</h2>
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   589
	<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
   590
		even when the LDPR supports that method.  This specification does not impose any
215
da72115eb40b Various updates per review of Raul
sspeiche
parents: 213
diff changeset
   591
		new requirement to support that method, and [[!HTTP11]] makes it optional.</p>
da72115eb40b Various updates per review of Raul
sspeiche
parents: 213
diff changeset
   592
	<p>Creation of LDPRs can be done via <code>POST</code> (<a href="#ldpc-HTTP_POST" class="sectionRef"></a>) or
da72115eb40b Various updates per review of Raul
sspeiche
parents: 213
diff changeset
   593
		<code>PUT</code> (<a href="#ldpc-HTTP_PUT" class="sectionRef"></a>) to a LDPC, see those 
200
aebd1e464817 Small editorial cleanup changes
John Arwe
parents: 199
diff changeset
   594
		sections for more details.</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   595
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   596
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   597
<section id="ldpr-HTTP_PUT">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   598
<h2>HTTP PUT</h2>
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   599
	<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
   600
		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
   601
		new requirement to support that method, and [[!HTTP11]] makes it optional.</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   602
		
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   603
	<div id="ldpr-4_5_1" class="rule">4.5.1 If HTTP <code>PUT</code> is performed on an existing resource, <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
   604
		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
   605
		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
   606
		<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
   607
		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
   608
		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
   609
		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
   610
		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
   611
		<code>PATCH</code>, not HTTP <code>PUT</code>.
61
2f8a2d58e65c ISSUE-11 - 4.4.1 Relaxed the MUST ignore dc:modified/creator to MAY
sspeiche
parents: 60
diff changeset
   612
	</div>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   613
		
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   614
	<div id="ldpr-4_5_2" class="rule">4.5.2 <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
   615
		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
   616
		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
   617
		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
   618
		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
   619
		(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
   620
		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
   621
		(Precondition Required) when the absence of a precondition is the only reason for rejecting the request [[!RFC6585]].
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   622
	</div>
372
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John Arwe
parents: 370
diff changeset
   623
	<div id="ldpr-4_5_3" class="rule">4.5.3 <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
   624
		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
   625
		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
   626
		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
   627
		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
   628
		set.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   629
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   630
	<div id="ldpr-4_5_4" class="rule">4.5.4 <a title="LDP client">LDP clients</a> SHOULD assume that an <a title="LDP server">LDP server</a> could discard triples
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   631
		whose predicates the server does not recognize or otherwise chooses
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   632
		not to persist. In other words, <a title="LDP server">LDP servers</a> MAY restrict themselves
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   633
		to a known set of predicates, but <a title="LDP client">LDP clients</a> MUST NOT restrict themselves to a known set of predicates 
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   634
		when their intent is to perform a later HTTP <code>PUT</code> to update the resource.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   635
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   636
	<div id="ldpr-4_5_5" class="rule">4.5.5 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
   637
		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
   638
		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
   639
		<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
   640
		[[RFC5789]].
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   641
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   642
	<div id="ldpr-4_5_6" class="rule">4.5.6 <a title="LDP server">LDP servers</a> MAY choose to allow the creation of new resources using HTTP <code>PUT</code>.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   643
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   644
	<div id="ldpr-4_5_7" class="rule">4.5.7 <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
   645
		requiring detailed knowledge of server-specific constraints.  
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   646
		This is a consequence of the requirement to <a href="#ldpr-4_2_9">enable simple creation and modification</a> of LPDRs.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   647
	</div>		
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   648
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   649
		
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   650
<section id="ldpr-HTTP_DELETE">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   651
<h2>HTTP DELETE</h2>
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   652
	<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
   653
		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
   654
		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
   655
	<p>Additional requirements on HTTP <code>DELETE</code> of LDPRs within containers can be found in
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   656
	<a href="#ldpc-HTTP_DELETE" class="sectionRef"></a>.</p>
37
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   657
		
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   658
	<!-- Action-108 removed this 2013-10-22
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   659
	<div id="ldpr-4_6_1" class="rule">4.6.1 <a title="LDP server">LDP servers</a> MUST remove the resource identified by the <code>Request-URI</code>.
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   660
		After a successful HTTP <code>DELETE</code>, a subsequent HTTP <code>GET</code> on the same
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   661
		<code>Request-URI</code> MUST result in a 404 (Not found) or 410 (Gone) status
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
   662
		code. Clients SHOULD note that servers MAY reuse a URI under some circumstances.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   663
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   664
	-->
19
52d63fdf6ae8 ISSUE-24: Should DELETED resources remain deleted?
sspeiche
parents: 18
diff changeset
   665
	
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   666
	<!-- Action-108 removed this 2013-10-22
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   667
	<div id="ldpr-4_6_2" class="rule">4.6.2 <a title="LDP server">LDP servers</a> MAY alter the state of other resources as a result of an
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   668
		HTTP <code>DELETE</code> request. For example, it is acceptable for the server to
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   669
		remove triples from other resources whose subject or object is the
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   670
		deleted resource. It is also acceptable and common for <a title="LDP server">LDP servers</a> to
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   671
		not do this – behavior is server application specific.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   672
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   673
	-->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   674
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   675
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   676
<section id="ldpr-HTTP_HEAD">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   677
<h2>HTTP HEAD</h2>
114
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
   678
	<p>Note that certain LDP mechanisms, such as paging, rely on HTTP headers, and HTTP generally requires that
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   679
		<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
   680
		Thus, implementers should also carefully read sections <a href="#ldpr-HTTP_GET"></a> 
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   681
		and <a href="#ldpr-HTTP_OPTIONS"></a>.</p>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   682
	<div id="ldpr-4_7_1" class="rule">4.7.1 <a title="LDP server">LDP servers</a> MUST support the HTTP <code>HEAD</code> method.</div>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   683
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   684
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   685
<section id="ldpr-HTTP_PATCH">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   686
<h2>HTTP PATCH</h2>
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   687
	<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
   688
		only when the LDPR supports that method.  This specification does not impose any
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   689
		new requirement to support that method, and [[!HTTP11]] makes it optional.</p>	
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   690
	<!-- Action-108 removed this 2013-10-22
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   691
	<div id="ldpr-4_8_1" class="rule">4.8.1 <a title="LDP server">LDP servers</a> MAY implement HTTP <code>PATCH</code> to allow modifications,
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
   692
		especially partial replacement, of their resources [[!RFC5789]]. No
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   693
		minimal set of patch document formats is mandated by this document.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   694
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
   695
	-->
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   696
	<div id="ldpr-4_8_2" class="rule">4.8.2 <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
   697
		requiring detailed knowledge of server-specific constraints.  
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   698
		This is a consequence of the requirement to <a href="#ldpr-4_2_9">enable simple creation and modification</a> of LPDRs.
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
   699
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   700
	<div id="ldpr-4_8_3" class="rule">4.8.3 <a title="LDP server">LDP servers</a> SHOULD NOT allow clients to create new resources using <code>PATCH</code>.
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   701
		<a href="#ldpc-HTTP_POST"><code>POST</code> (to an LDPC)</a> and/or <a href="#ldpc-HTTP_PUT"><code>PUT</code></a> should be used as the standard way to create new LDPRs.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   702
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   703
	<div id="ldpr-4_8_4" class="rule">4.8.4 <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
   704
		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
   705
		requests, listing patch document media type(s) supported by the server.
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   706
	</div>
186
a3471f4667d8 Removed closed issues that required no new spec changes: 50, 56, 16, 19, 17
sspeiche
parents: 185
diff changeset
   707
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   708
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   709
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   710
<section id="ldpr-HTTP_OPTIONS">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   711
<h2>HTTP OPTIONS</h2>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   712
	<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
   713
		beyond those in [[!HTTP11]].  Other sections of this specification, for example 
167
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   714
		<a href="#ldpr-HTTP_PATCH">PATCH</a>,
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   715
		<a href="#header-accept-post">Accept-Post</a>
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   716
		and <a href="#ldpr-paging-HTTP_OPTIONS">Paging</a>,
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   717
		add other requirements on <code>OPTIONS</code> responses.
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   718
		</p>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   719
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   720
	<div id="ldpr-4_9_1" class="rule">4.9.1 <a title="LDP server">LDP servers</a> MUST support the HTTP <code>OPTIONS</code> method.</div>		
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   721
	<div id="ldpr-4_9_2" class="rule">4.9.2 <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
   722
		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
   723
		Method tokens in the HTTP response header <code>Allow</code>.
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   724
	</div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   725
		
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   726
</section>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   727
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   728
<section id="ldpr-Paging">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   729
<h2>Paging</h2>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   730
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   731
<section class="informative" id="ldpr-PagingIntro">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   732
<h3>Introduction</h3>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   733
	<p>It sometimes happens that a
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   734
		resource is too large to reasonably transmit its representation in a
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   735
		single HTTP response. This will be especially true if the resource
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   736
		representation includes many triples both from its own representation and
334
8e9ad2d0e512 Removed at-risk inlining feature from spec, ACTION-98
sspeiche
parents: 333
diff changeset
   737
		from the representations of any of the member resources. A client could anticipate that a resource will be too large -
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   738
		for example, a client tool that accesses defects may assume that an
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   739
		individual defect will usually be of sufficiently constrained size
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   740
		that it makes sense to request all of it at once, but that the
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   741
		container of all the defects ever created will typically be too big.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   742
		Alternatively, a server could recognize that a resource that has been
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   743
		requested is too big to return in a single message.</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   744
	<p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   745
		To address this problem, LDPRs should support a technique called Paging.  Paging can be achieved with a
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   746
		simple RDF pattern. For each resource, <code>&lt;resourceURL&gt;</code>, we define a new
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
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parents: 194
diff changeset
   747
		'first page' resource.  In this example, its URL will be <code>&lt;resourceURL&gt;?firstPage</code>,
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   748
		but servers are free to construct the URL as they see fit.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   749
		The triples in the representation of the each page
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
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parents: 194
diff changeset
   750
		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
   751
		- same subject, predicate and object.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   752
	</p>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   753
	<p><a title="LDP server">LDP servers</a> may respond to requests for a
384
adfc713130ec add status code 209, change existing 303 usage to use it
John Arwe
parents: 374
diff changeset
   754
		resource by returning the first page resource –
adfc713130ec add status code 209, change existing 303 usage to use it
John Arwe
parents: 374
diff changeset
   755
		using a <a href="#status-code-related-content"><code>209 Related Content</code></a> response
adfc713130ec add status code 209, change existing 303 usage to use it
John Arwe
parents: 374
diff changeset
   756
		with a <code>Location</code> header containing the URL for the page
200
aebd1e464817 Small editorial cleanup changes
John Arwe
parents: 199
diff changeset
   757
		resource.  Alternatively, clients may introspect the resource for a paged representation 
aebd1e464817 Small editorial cleanup changes
John Arwe
parents: 199
diff changeset
   758
		and use it preferentially when available.</p>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   759
	<p>
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   760
		Looking at an example resource representing Example Co.'s customer
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   761
		relationship data, we’ll split the response across two pages.  
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   762
		To find the URL of the first page, the client makes a <code>OPTIONS</code> request
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   763
		to the resource's URL, and in the response looks for a HTTP <code>Link</code>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   764
		header with <code>rel="first"</code>; the target URI in the header is the URL
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   765
		of the first page resource.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   766
		The client then 
215
da72115eb40b Various updates per review of Raul
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parents: 213
diff changeset
   767
		requests the first page as <code>http://example.org/customer-relations?firstPage</code>:
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   768
	</p>
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   769
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   770
<pre class="example"># The following is the representation of
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   771
#    http://example.org/customer-relations?firstPage
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   772
@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)
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parents: 130
diff changeset
   773
@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
   774
@prefix foaf: &lt;http://xmlns.com/foaf/0.1/&gt;.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   775
@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
   776
@prefix o: &lt;http://example.org/ontology/&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   777
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
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parents: 194
diff changeset
   778
&lt;http://example.org/customer-relations&gt;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   779
   a o:CustomerRelations;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   780
   dcterms:title "The customer information for Example Co.";
8afbf5c571e1 Updated LDPR paging section with new non-container example
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parents: 194
diff changeset
   781
   o:client &lt;client#JohnZSmith&gt;, &lt;client#BettyASmith&gt;, &lt;client#JoanRSmith&gt;. 
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   782
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
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parents: 194
diff changeset
   783
&lt;http://example.org/customer-relations?firstPage&gt;
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   784
   a ldp:Page;
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   785
   ldp:pageOf &lt;http://example.org/customer-relations&gt;;
8afbf5c571e1 Updated LDPR paging section with new non-container example
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parents: 194
diff changeset
   786
   ldp:nextPage &lt;http://example.org/customer-relations?p=2&gt;.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
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parents: 130
diff changeset
   787
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   788
&lt;client#JohnZSmith&gt;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   789
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   790
   o:status o:ActiveCustomer;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   791
   foaf:name "John Z. Smith".
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   792
&lt;client#BettyASmith&gt;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   793
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   794
   o:status o:PreviousCustomer;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   795
   foaf:name "Betty A. Smith".
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   796
 &lt;client#BettyASmith&gt;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   797
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   798
   o:status o:PotentialCustomer;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   799
   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
   800
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   801
	<p>
232
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   802
		The server determines the size of the pages using application specific methods not defined
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   803
		within this specificiation. Note also, the actual name for the query parameter (such as ?p=2) is also
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   804
		defined by the server and not this specification.
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   805
	</p>
c38de2977a87 Editorial changes from feedback from Sergio
sspeiche
parents: 231
diff changeset
   806
	<p>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   807
		The following example is the result of retrieving the representation
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   808
		for the next page:
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   809
	</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   810
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   811
<pre class="example"># The following is the representation of
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   812
#  http://example.org/customer-relations?p=2
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   813
@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
   814
@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
   815
@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
   816
@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
   817
@prefix o: &lt;http://example.org/ontology/&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   818
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   819
&lt;http://example.org/customer-relations&gt;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   820
   o:client &lt;client#GlenWSmith&gt;, &lt;client#AlfredESmith&gt;. 
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   821
 
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   822
&lt;http://example.org/customer-relations?p=2&gt;
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   823
   a ldp:Page;
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   824
   ldp:pageOf &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
   825
   ldp:nextPage rdf:nil.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   826
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   827
&lt;client#GlenWSmith&gt;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   828
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   829
   o:status o:ActiveCustomer, o:GoldCustomer;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   830
   foaf:name "Glen W. Smith".
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   831
198
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   832
&lt;client#AlfredESmith&gt;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   833
   a foaf:Person;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   834
   o:status o:ActiveCustomer, o:BronzeCustomer;
8afbf5c571e1 Updated LDPR paging section with new non-container example
sspeiche
parents: 194
diff changeset
   835
   foaf:name "Alfred E. Smith".</pre>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   836
	<p>
215
da72115eb40b Various updates per review of Raul
sspeiche
parents: 213
diff changeset
   837
		In this example, there are only two customers provided in the
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   838
		final page.  To indicate this is the last page, a value of <code>rdf:nil</code> is used for the <code>ldp:nextPage</code>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   839
		predicate of the page resource.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   840
	</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   841
</section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   842
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   843
<section id="ldpr-PagingGET">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   844
<h3>HTTP GET</h3>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   845
<p>In addition to the requirements set forth in <a href="#ldpr-HTTP_GET" class="sectionRef"></a> on HTTP <code>GET</code>, <a title="LDP server">LDP servers</a> that support paging must also follow the requirements in this section</p>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   846
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   847
	<div id="ldpr-pagingGET-1" class="rule">4.10.2.1 <a title="LDP server">LDP servers</a> SHOULD allow clients to retrieve large LDPRs in
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   848
		pages. In responses to <code>GET</code> requests with an LDPR as the <code>Request-URI</code>, 
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   849
		<a title="LDP server">LDP servers</a> that support paging SHOULD provide an HTTP <code>Link</code>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   850
		header whose target URI is the first page resource, and whose link relation type is <code>first</code> [[!RFC5988]]. 
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   851
		This is the mechanism by which clients discover the URL of the first page.  If no such <code>Link</code>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   852
		header is present, then conservative clients will assume that the LDPR does not support paging.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   853
		For example, if there is a LDPR with URL <code>&lt;resourceURL&gt;</code> that supports paging and whose
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   854
		first page URL is <code>&lt;resourceURL&gt;?theFirstPage</code>, then the corresponding link header
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   855
		would be <code>Link: &lt;?theFirstPage&gt;;rel="first"</code>.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   856
		The representation for any page, including the first, will include
201
45d0825d4dfc fix broken sectionRef to paging
John Arwe
parents: 200
diff changeset
   857
		the URL for the next page. See <a href="#ldpr-Paging" class="sectionRef"></a> for additional details.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   858
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   859
	<div id="ldpr-pagingGET-2" class="rule">4.10.2.2 <a title="LDP server">LDP servers</a> MAY split the response representation of any LDPR. 
370
6af379583e5e remove client/server-initiated paging (just the terms), fix "not found" respec refs in conformance section
John Arwe
parents: 335
diff changeset
   860
		See <a href="#ldpr-Paging" class="sectionRef"></a> for
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   861
		additional details.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   862
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   863
	<div id="ldpr-pagingGET-3" class="rule">4.10.2.3 <a title="LDP server">LDP servers</a> that initiate paging SHOULD respond to requests for a LDPR
384
adfc713130ec add status code 209, change existing 303 usage to use it
John Arwe
parents: 374
diff changeset
   864
		by returning the first page resource using a <code>209 Related Content</code> response 
adfc713130ec add status code 209, change existing 303 usage to use it
John Arwe
parents: 374
diff changeset
   865
		with an HTTP <code>Location</code> header providing the first page resource URL.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   866
	</div>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   867
	<div id="ldpr-pagingGET-4" class="rule">4.10.2.4 <a title="LDP server">LDP servers</a> that support paging MUST include a representation for the page resource.
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   868
	</div>
227
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   869
	<div id="ldpr-pagingGET-4_1" class="rule">4.10.2.4.1 The page resource representation MUST have one triple with the subject
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   870
		of the page, predicate of <code>ldp:nextPage</code> and
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   871
		object being the URL for the subsequent page.
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   872
<pre class="example">&lt;http://example.org/customer-relations?firstPage&gt;
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   873
    ldp:nextPage  &lt;http://example.org/customer-relations?p=2&gt; .</pre>
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   874
	</div>
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   875
	<div id="ldpr-pagingGET-4_2" class="rule">4.10.2.4.2 The last page resource representation MUST have one triple with the subject of the 
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   876
	    last page, predicate of <code>ldp:nextPage</code> and object being <code>rdf:nil</code>.
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   877
<pre class="example">&lt;http://example.org/customer-relations?p=2&gt;
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   878
    ldp:nextPage  rdf:nil .</pre>	    
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   879
	</div>
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   880
	<div id="ldpr-pagingGET-4_3" class="rule">4.10.2.4.3 The page resource representation SHOULD have one triple to indicate its
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   881
		type, whose subject is the URL of the page, whose predicate is <code>rdf:type</code> and object is <code>ldp:Page</code>.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   882
		It also SHOULD have 1 triple to indicate the resource it is paging,
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   883
		whose  subject is the URL of the page, predicate is <code>ldp:pageOf</code>,
206
812d3e1f3412 fix LDPC/LDPR typo
John Arwe
parents: 202
diff changeset
   884
		and object is the URL of the LDPR.
227
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   885
<pre class="example">&lt;http://example.org/customer-relations?firstPage&gt;
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   886
    rdf:type    ldp:Page;
1bb410ec95dd Moved 4.10.2.5->4.10.2.4.3,4.10.2.6->4.10.2.4.1,4.10.2.7->4.10.2.4.2 and added samples
sspeiche
parents: 226
diff changeset
   887
    ldp:pageOf  &lt;http://example.org/customer-relations&gt;.</pre>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   888
	</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   889
</section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   890
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   891
<section id="ldpr-paging-HTTP_OPTIONS">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   892
<h3>HTTP OPTIONS</h3>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   893
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   894
<div id="ldpr-4_10_3_1" class="rule">4.10.3.1 <a title="LDP server">LDP servers</a> MUST indicate their support for paging by
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   895
	responding to a HTTP <code>OPTIONS</code> request on the LDPR’s URL with the HTTP
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   896
	response header for link relations using the header name of <code>Link</code> and link relation type <code>first</code> [[!RFC5988]].
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   897
</div>
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   898
</section> <!-- h3 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   899
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   900
</section> <!-- h2 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   901
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   902
</section> <!-- h1 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   903
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   904
<section id="ldpc">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   905
<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
   906
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   907
<section class="informative" id="ldpc-informative">		
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   908
<h2>Informative</h2>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   909
	<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
   910
		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
   911
		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
   912
		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
   913
		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
   914
		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
   915
		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
   916
		are:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   917
	<ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   918
		<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
   919
		<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
   920
		<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
   921
		<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
   922
		<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
   923
	</ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   924
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   925
		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
   926
		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
   927
		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
   928
		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
   929
		(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
   930
		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
   931
		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
   932
		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
   933
		– 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
   934
		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
   935
		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
   936
		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
   937
		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
   938
		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
   939
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   940
	<p>This document includes a set of guidelines for
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   941
		using POST to create new resources and add 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
   942
		members of a container. It goes on to explain how to learn about a set of related
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
   943
		resources, they may have been created using POST or through other means.
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
   944
		It also defines behavior when POST created resources are deleted, to clean up
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
   945
		container membership, and deleting containers removes membership information and
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
   946
		possibly perform 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
   947
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   948
	<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
   949
		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
   950
		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
   951
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   952
<pre class="example"># 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
   953
#    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
   954
<!-- @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
   955
# @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
   956
@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
   957
@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
   958
@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
   959
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
   960
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   961
   a ldp:Container;
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
   962
   ldp:membershipSubject &lt;&gt; ;
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
   963
   ldp:membershipPredicate rdfs:member;
210
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
   964
   ldp:membershipObject ldp:MemberSubject;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   965
   dcterms:title "A very simple container";
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
   966
   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
   967
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   968
	<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
   969
			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
   970
			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
   971
			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
   972
			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
   973
			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
   974
			to the container.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   975
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   976
	<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
   977
	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
   978
	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
   979
	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
   980
			
233
37842c77d995 Fixed dup id problem in example
sspeiche
parents: 232
diff changeset
   981
<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
   982
#   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
   983
<!-- @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
   984
# @base &lt;http://example.org/netWorth/nw1/&gt;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   985
@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
   986
@prefix o: &lt;http://example.org/ontology/&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   987
&lt;&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   988
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   989
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   990
   o:asset 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   991
      &lt;assetContainer/a1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   992
      &lt;assetContainer/a2&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   993
   o:liability 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   994
      &lt;liabilityContainer/l1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   995
      &lt;liabilityContainer/l2&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   996
      &lt;liabilityContainer/l3&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   997
</pre>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   998
	<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
   999
	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
  1000
	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
  1001
	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
  1002
	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
  1003
	illustrated below:
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1004
	</p>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1005
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1006
<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
  1007
#   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
  1008
<!-- @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
  1009
# @base &lt;http://example.org/netWorth/nw1/&gt;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1010
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1011
@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
  1012
@prefix o: &lt;http://example.org/ontology/&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1013
&lt;&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1014
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1015
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1016
   o:asset 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1017
      &lt;assetContainer/a1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1018
      &lt;assetContainer/a2&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1019
   o:liability 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1020
      &lt;liabilityContainer/l1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1021
      &lt;liabilityContainer/l2&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1022
      &lt;liabilityContainer/l3&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1023
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1024
&lt;assetContainer/&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1025
   a ldp:Container;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1026
   dcterms:title "The assets of JohnZSmith";
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1027
   ldp:membershipSubject &lt;&gt;;
210
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1028
   ldp:membershipPredicate o:asset;
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1029
   ldp:membershipObject ldp:MemberSubject.
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1030
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1031
&lt;liabilityContainer/&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1032
   a ldp:Container;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1033
   dcterms:title "The liabilities of JohnZSmith";
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1034
   ldp:membershipSubject &lt;&gt;;
210
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1035
   ldp:membershipPredicate o:liability;
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1036
   ldp:membershipObject ldp:MemberSubject.
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1037
</pre>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1038
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1039
	<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
  1040
	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
  1041
	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
  1042
	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
  1043
	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
  1044
	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
  1045
	to the container. You might wonder why
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1046
	<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
  1047
	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
  1048
	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
  1049
	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
  1050
	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
  1051
	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
  1052
	resources allows both assets and liabilities to be created.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1053
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1054
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1055
<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
  1056
#   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
  1057
<!-- @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
  1058
# @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
  1059
@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
  1060
@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
  1061
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1062
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1063
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1064
   ldp:membershipSubject &lt;http://example.org/netWorth/nw1&gt;;
210
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1065
   ldp:membershipPredicate o:asset;
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1066
   ldp:membershipObject ldp:MemberSubject.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1067
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1068
&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
  1069
   a o:NetWorth;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1070
   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
  1071
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
  1072
	<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
  1073
			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
  1074
			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
  1075
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1076
	
191
ab6b24fcb2b6 Fixed various section marking issues with informative
sspeiche
parents: 190
diff changeset
  1077
	<div id="ldpc-member_data" class="rule informative">5.1.1 Container Member Information</div>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1078
	<p>In many – perhaps most – applications
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1079
		involving containers, it is desirable for the client to be able to
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1080
		get information about each container member without having to do a
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1081
		GET on each one. LDPC allows servers to include this information
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1082
		directly in the representation of the container. The server decides
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1083
		the amount of data about each member that is provided. Some common
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1084
		strategies include providing a fixed number of standard properties,
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1085
		or providing the entire RDF representation of each member resource,
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1086
		or providing nothing. The server application domain and its use-cases
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1087
		will determine how much information is required.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1088
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1089
	<p>Continuing on from the net worth
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1090
		example, there will be additional triples for the member resources
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1091
		(assets) in the representation:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1092
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1093
<pre class="example"># 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
  1094
#	 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
  1095
<!-- @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
  1096
# @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
  1097
@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
  1098
@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
  1099
@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
  1100
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1101
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1102
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1103
   dcterms:title "The assets of JohnZSmith";
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1104
   ldp:membershipSubject &lt;http://example.org/netWorth/nw1&gt;;
210
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1105
   ldp:membershipPredicate o:asset;
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1106
   ldp:membershipObject ldp:MemberSubject.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1107
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1108
&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
  1109
   a o:NetWorth;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1110
   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
  1111
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1112
&lt;a1&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1113
   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
  1114
   o:value 10000 .
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1115
&lt;a2&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1116
   a o:Bond;
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
  1117
   o:value 20000 .
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1118
&lt;a3&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1119
   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
  1120
   o:value 300000 .</pre>
185
58f49a8417b8 ISSUE-51 Added how a LDPR can show which LDPC is it in
sspeiche
parents: 184
diff changeset
  1121
	<p>In a similar manner, when the representation for the resource of asset <var>.../&lt;a1&gt;</var> is returned a 
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1122
	server may include the membership triple of the form <var>(.../nw1, o:asset, .../a1).</var></p>
102
04e3e77e4e78 Added open issues 50, 51, 55, 56, 57, 58, 59
Ashok Malhotra <Ashok.Malhotra@Oracle.com>
parents: 99
diff changeset
  1123
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1124
	<div id="ldpc-get_non-member_props" class="rule">5.1.2 Retrieving Only Non-member Properties
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1125
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1126
	<p>The representation of a container
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1127
		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
  1128
		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
  1129
		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
  1130
		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
  1131
		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
  1132
		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
  1133
		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
  1134
		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
  1135
	<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
  1136
		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
  1137
		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
  1138
		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
  1139
		associating SPARQL endpoints. [[SPARQL-QUERY]]</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1140
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1141
		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
  1142
		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
  1143
		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
  1144
		<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
  1145
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1146
<p>Request:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1147
<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
  1148
Host: example.org
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1149
Accept: text/turtle; charset=UTF-8
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1150
</pre>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1151
<p>Response:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1152
<pre class="example">HTTP/1.1 200 OK
13
eea17080fdf2 Minor typo fix and some notes
sspeiche
parents: 12
diff changeset
  1153
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
  1154
ETag: "_87e52ce291112"
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1155
Content-Length: 325
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1156
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1157
@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
  1158
@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
  1159
@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
  1160
74
30624f0a7534 Adding trailing '/' on Container URLs to help with readability based on WG suggestion
sspeiche
parents: 73
diff changeset
  1161
&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
  1162
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1163
   dcterms:title "A Linked Data Platform Container of Acme Resources";
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
  1164
   ldp:membershipSubject &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
  1165
   ldp:membershipPredicate rdfs:member;
210
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1166
   ldp:membershipObject ldp:MemberSubject;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1167
   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
  1168
   
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1169
	<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
  1170
		LDP recommends using PATCH for this purpose.</p>
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1171
215
da72115eb40b Various updates per review of Raul
sspeiche
parents: 213
diff changeset
  1172
	<div id="ldpc-ordering" class="rule">5.1.3 Ordering</div>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1173
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1174
		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
  1175
		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
  1176
		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
  1177
		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
  1178
		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
  1179
		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
  1180
		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
  1181
		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
  1182
		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
  1183
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1184
	<p>
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
  1185
		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
  1186
		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
  1187
		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
  1188
		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
  1189
		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
  1190
		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
  1191
		members on the next and previous pages.
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1192
		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
  1193
		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
  1194
		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
  1195
		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
  1196
		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
  1197
		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
  1198
		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
  1199
		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
  1200
		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
  1201
		<code>ldp:containerSortCriteria</code> relation.
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1202
		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
  1203
		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
  1204
		<code>ldp:containerSortPredicate</code>, and 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1205
		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
  1206
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1207
	<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
  1208
		previously, with representation for ordering of the assets:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1209
<pre class="example"># 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
  1210
#   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
  1211
<!-- @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
  1212
# @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
  1213
@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
  1214
@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
  1215
@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
  1216
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1217
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1218
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1219
   dcterms:title "The assets of JohnZSmith";
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1220
   ldp:membershipSubject &lt;http://example.org/netWorth/nw1&gt;;
210
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1221
   ldp:membershipPredicate o:asset;
c2479399b854 Inserted ldp:membershipObject into examples
sspeiche
parents: 208
diff changeset
  1222
   ldp:membershipObject ldp:MemberSubject.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1223
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1224
&lt;?firstPage&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1225
   a ldp:Page;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1226
   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
  1227
   ldp:containerSortCriteria (&lt;#SortValueAscending&gt;).
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1228
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1229
&lt;#SortValueAscending&gt;
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1230
   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
  1231
   ldp:containerSortOrder ldp:Ascending;
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1232
   ldp:containerSortPredicate o:value.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1233
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1234
&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
  1235
   a o:NetWorth;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1236
   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
  1237
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1238
&lt;a1&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1239
   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
  1240
   o:value 100.00 .
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1241
&lt;a2&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1242
   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
  1243
   o:value 50.00 .
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1244
&lt;a3&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1245
   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
  1246
   o:value 300000 .</pre>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1247
		<p>
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1248
			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
  1249
			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
  1250
			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
  1251
			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
  1252
			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
  1253
			representation to use that order in whatever way is appropriate, for 
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1254
			example to sort the data prior to presentation on a user interface.
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
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1257
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1258
<section id="ldpc-general">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1259
<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
  1260
	<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
  1261
		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
  1262
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
  1263
	<div id="ldpc-5_2_1" class="rule">5.2.1 
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
  1264
		Each Linked Data Platform Container MUST also be a conforming Linked Data Platform Resource.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1265
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
  1266
	<!-- Action-108 removed this 2013-10-22
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1267
	<div id="ldpc-5_2_2" class="rule">5.2.2 LDPC membership is not exclusive; this means that the same resource
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
  1268
	(LDPR or not) MAY be a member of more than one LDPC.
85
612f57f3b28e Additional fix in 5.2.2 for ISSUE-34
sspeiche
parents: 84
diff changeset
  1269
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
  1270
	-->
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
  1271
	<div id="ldpc-5_2_3" class="rule">5.2.3 <a title="LDP server">LDP servers</a>
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
  1272
		SHOULD use the <code>rdfs:member</code> 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
  1273
		If there is no obvious predicate from an application vocabulary to use.
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
  1274
		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
  1275
		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
  1276
		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
  1277
		the <a title="Membership predicate">membership predicate</a>, the other consistent 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
  1278
		value used in the container's membership triples, and the position (subject or object) where the member's URI
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
  1279
		occurs in those 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
  1280
		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
  1281
		any kind of resource identified by a URI, LDPR or otherwise.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1282
	</div>
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1283
	<div id="ldpc-5_2_4" class="rule">5.2.4 An LDPC representation MUST contain exactly one triple 
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1284
		whose subject is the LDPC URI, 
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1285
		whose predicate is the <code>ldp:membershipSubject</code>, 
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1286
		and whose object is the LDPC's membership subject URI.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1287
	</div>
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
  1288
<div class="ldp-issue-open">
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
  1289
<div class="ldp-issue-title">Issue-81: confusing predicate names</div>
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
  1290
"membership subject" has been removed too.  Remove this use of it as part of Issue-81 resolution.
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
  1291
</div>
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
  1292
	<div id="ldpc-5_2_5" class="rule">5.2.5 An LDPC representation MUST contain exactly one triple 
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1293
		whose subject is the LDPC URI, 
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1294
		and whose predicate is either <code>ldp:membershipPredicate</code> or <code>ldp:membershipPredicateInverse</code>. 
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1295
		The object of the triple is constrained by other sections, such as
235
b93936428fcd Fixed some broken references
sspeiche
parents: 234
diff changeset
  1296
		<a href="#ldpc-5_2_5_1">5.2.5.1</a> or <a href="#ldpc-5_2_5_2">5.2.5.2</a>.
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1297
	</div>
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1298
	<div id="ldpc-5_2_5_1" class="rule">5.2.5.1 For a given triple <var>T</var> with a subject <var>C</var>
95
68405d7a9fd6 ISSUE-21 Added ldp:membershipPredicateInverse to 5.2.5 &amp; 5.5.2, created 5.2.5.1 &amp; 5.3.5.2 to indicate difference.
sspeiche
parents: 94
diff changeset
  1299
	of the LDPC and predicate of 
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1300
	<code>ldp:membershipPredicate</code>, the object MUST be the URI of the membership predicate <var>P</var> used to
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1301
	indicate membership to the linked to LDPC, or simply: <var>T = ( C</var>, <code>ldp:membershipPredicate</code>, <var>P)</var>. 
98
63281c5a9a43 ISSUE-21 Continued refinement of text, take 2
sspeiche
parents: 97
diff changeset
  1302
	For the membership predicate URI object used in the triple <var>T</var>, it would be found in a resource's
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1303
	same subject <var>R</var> and same predicate <var>P</var> membership triples of the form: 
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1304
	(<var>R</var>, <var>P</var>, <var>MR</var>), where <var>MR</var> represents URI of
98
63281c5a9a43 ISSUE-21 Continued refinement of text, take 2
sspeiche
parents: 97
diff changeset
  1305
	a member resource.
95
68405d7a9fd6 ISSUE-21 Added ldp:membershipPredicateInverse to 5.2.5 &amp; 5.5.2, created 5.2.5.1 &amp; 5.3.5.2 to indicate difference.
sspeiche
parents: 94
diff changeset
  1306
	</div>
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1307
	<div id="ldpc-5_2_5_2" class="rule">5.2.5.2  For a given triple <var>T</var> with a subject <var>C</var>
95
68405d7a9fd6 ISSUE-21 Added ldp:membershipPredicateInverse to 5.2.5 &amp; 5.5.2, created 5.2.5.1 &amp; 5.3.5.2 to indicate difference.
sspeiche
parents: 94
diff changeset
  1308
	of the LDPC and predicate of 
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1309
	<code>ldp:membershipPredicateInverse</code>, the object MUST be the URI of the membership predicate <var>P</var> used to
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1310
	indicate membership to the linked to LDPC, or simply: <var>T = ( C</var>, <code>ldp:membershipPredicateInverse</code>, <var>P)</var>. 
98
63281c5a9a43 ISSUE-21 Continued refinement of text, take 2
sspeiche
parents: 97
diff changeset
  1311
	For the membership predicate URI object used in the triple <var>T</var>, it would be found in a resource's
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1312
	object subject <var>R</var> and same predicate <var>P</var> membership triples of the form: 
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1313
	(<var>MR</var>, <var>P</var>, <var>R</var>), where <var>MR</var> represents URI of
98
63281c5a9a43 ISSUE-21 Continued refinement of text, take 2
sspeiche
parents: 97
diff changeset
  1314
	a member resource.
95
68405d7a9fd6 ISSUE-21 Added ldp:membershipPredicateInverse to 5.2.5 &amp; 5.5.2, created 5.2.5.1 &amp; 5.3.5.2 to indicate difference.
sspeiche
parents: 94
diff changeset
  1315
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
  1316
	<!-- Action-108 removed this 2013-10-22
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1317
	<div id="ldpc-5_2_6" class="rule">5.2.6 The representation of a LDPC MAY include an arbitrary number of
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1318
		additional triples whose subjects are the members of the container,
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1319
		or that are from the representations of the members (if they have RDF
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1320
		representations). This allows a LDPC server to provide clients with
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
  1321
		information about the members without the client having to do a <code>GET</code>
334
8e9ad2d0e512 Removed at-risk inlining feature from spec, ACTION-98
sspeiche
parents: 333
diff changeset
  1322
		on each member individually.  See <a href="#ldpc-member_data">section 5.1.1 Container
8e9ad2d0e512 Removed at-risk inlining feature from spec, ACTION-98
sspeiche
parents: 333
diff changeset
  1323
		Member Information</a> for additional details.
113
6fd1ba20242d ISSUE-13 Updated 5.2.3 to say any resource can be in a LDPC and inserted 5.5.3 on rejecting member data on PUT to LDPC
sspeiche
parents: 112
diff changeset
  1324
    </div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
  1325
	-->
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
  1326
	<div id="ldpc-5_2_7" class="rule">5.2.7 The representation of a LDPC MUST have an <code>rdf:type</code>
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
  1327
		of <code>ldp:Container</code>.  Informative note: <a href="#ldp-rdfconcepts-extra-triples-types">LDPCs
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
  1328
		might have additional types</a>, like any RDF resource.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1329
	</div>
215
da72115eb40b Various updates per review of Raul
sspeiche
parents: 213
diff changeset
  1330
	<div id="ldpc-5_2_8" class="rule">5.2.8 LDPC representations SHOULD NOT use RDF container types <code>rdf:Bag</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
  1331
		<code>rdf:Seq</code> or <code>rdf:List</code>.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1332
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
  1333
	<!-- Action-108 removed this 2013-10-22
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
  1334
	<div id="ldpc-5_2_9" class="rule">5.2.9 <a title="LDP server">LDP servers</a> SHOULD NOT re-use URIs, 
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
  1335
		regardless of the mechanism by which members are created (<code>POST</code>, <code>PUT</code>, etc.).
116
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1336
		Certain specific cases exist where a LDPC server MAY delete a resource and then later re-use the
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1337
		URI when it identifies the same resource, but only when consistent with Web architecture [[WEBARCH]].
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1338
		While it is difficult to provide absolute implementation guarantees of non-reuse in all failure
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1339
		scenarios, re-using URIs creates ambiguities for clients that are best avoided.
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1340
	</div>
386
b7c514f96add Resolve ACTION-108 move restatements of HTTP et al. out of normative sections
John Arwe
parents: 385
diff changeset
  1341
	-->
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
  1342
	<div id="ldpc-5_2_10" class="rule">5.2.10 Some LDPCs have members whose URIs are not directly
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
  1343
	    URIs minted upon LDPC member creation, for example URIs with a non-empty fragment identifier [[RFC3986]]. 
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
  1344
	    To determine which member URI to use in the  membership triple, LDPCs MUST contain one triple whose
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
  1345
	    subject is the LDPC URI, whose predicate is <code>ldp:membershipObject</code>, and whose object is <var>MO</var>. 
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
	    <var>MO</var> and the HTTP URI <var>R</var> from <code>POST</code> create 
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
		(as found in HTTP response <code>Location</code> header) are 
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
	    used to locate a triple in <var>R</var> of the form <var>(R, MO, N)</var>.
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
		When the LDPC uses <code>ldp:membershipPredicate</code>, 
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
  1350
	    <var>N</var> is then used to construct the membership triple of the form: 
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
  1351
		<var>(membership consistent value, membership predicate, N)</var>.
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
  1352
	    When the LDPC uses <code>ldp:membershipPredicateInverse</code>,
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
		the membership triple is
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
	    of the form: <var>(N, membership predicate, membership consistent value)</var>. 
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
  1355
		To indicate that the member resource URI is the membership object
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
  1356
	    (the default or typical case), the object MUST be set to predefined URI <code>ldp:MemberSubject</code> 
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
  1357
		such that it forms the triple: 
181
1bd6eacbb5a6 ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
sspeiche
parents: 180
diff changeset
  1358
	    <var>(LDPC URI, <code>ldp:membershipObject</code>, <code>ldp:MemberSubject</code>)</var>.
179
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1359
	</div>
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1360
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1361
	<!-- NOTE: Saving this sample to help with future editing/understanding or possible insertion directly.
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1362
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1363
	Let's say this LDPC has a membershipSubject of </people/roger> and membershipPredicate of pets:has_pet. If I POST the following to the LDPC: 
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1364
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1365
	<> foaf:primaryTopic <#this> .
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1366
	<#this> 
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1367
	  a animal:Cat; 
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1368
	  foaf:name "Zaza".
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1369
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1370
	... a new resource is created and there is a new membership triple of 
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1371
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1372
	</people/roger> pets:has_pet </people/roger/zaza>.
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1373
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1374
	but the desired one is:
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1375
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1376
	</people/roger> pets:has_pet </people/roger/zaza#this>.
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1377
		
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1378
	To do this, you'd have to use ldp:membershipObject such as:
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1379
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1380
	pets:has_pet 
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1381
	   a ldp:Container;
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1382
	   ldp:membershipPredicate pets:has_pet;
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1383
	   ldp:membershipSubject </people/roger>;
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1384
	   ldp:membershipObject foaf:primaryTopic .
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1385
	 -->
176
60b0a09af2c4 Just a sample for respec bug, will remove
sspeiche
parents: 175
diff changeset
  1386
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1387
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1388
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1389
<section id="ldpc-HTTP_GET">	
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
  1390
<h2>HTTP GET</h2>
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1391
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
  1392
	<div id="ldpc-5_3_1" class="rule">5.3.1 The representation of a LDPC MUST contain a set of 
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
  1393
		<a href="Membership triples">membership triples</a> following one of the consistent 
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
  1394
		patterns from that definition.
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
  1395
		The membership-constant-URI of the triples MAY be the container itself
33 </