ldp.html
author sspeiche
Wed, 10 Jul 2013 11:45:09 -0400
changeset 181 1bd6eacbb5a6
parent 180 5c0da415b275
child 182 08403f15f875
permissions -rw-r--r--
ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
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<!DOCTYPE html>
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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:  "2009-08-06",
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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:  "2013-03-07",
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          previousMaturity:  	"FPWD",
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          previousURI: 			"http://www.w3.org/TR/2013/WD-ldp-20130307/",
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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: "2009-08-05",
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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: "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-wg",
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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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      };
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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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    </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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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>
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<h1 id="intro">Introduction</h1>
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	<p>This document 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 some
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	new rules as well as clarifications and extensions of the four rules
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	of Linked Data [[LINKED-DATA]]:</p>
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	<p>1. Use URIs as names for things</p>
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	<p>2. Use HTTP URIs so that people can look up those
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		names</p>
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	<p>3. When someone looks up a URI, provide useful
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		information, using the standards (RDF*, <abbr title="SPARQL Protocol and RDF Query Language">SPARQL</abbr>)</p>
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	<p>4. Include links to other URIs. so that they can
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		discover more things</p>
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	<p>The best practices and
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		anti-patterns covered in this document are:</p>
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	<ul>
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		<li><p>
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			<em>Resources</em> - a summary of the
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				HTTP and RDF standard techniques and best practices that you should
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				use, and anti-patterns you should avoid, when constructing clients
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				and servers that read and write Linked Data.
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			</p>
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		</li>
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		<li><p>
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			<em>Containers</em> - defines resources
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				that allow new resources to be created using HTTP POST and existing
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				resources to be found using HTTP GET. 
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			</p>
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		</li>
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	</ul>
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	<p>Additionally, it is the intention
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	of this document to enable additional rules and layered groupings of
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	rules, such as additional specifications.  The scope is intentionally
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	narrow to provide a set of key rules for reading and writing Linked
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	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>
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<h1 id="terms">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> (<dfn><abbr title="Linked Data Platform Resource">LDPR</abbr></dfn>)</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 the <a href="#ldpr">LDPRs</a> section.<p></p></dd>
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	<dt><dfn>Linked Data Platform Container</dfn> (<dfn><abbr title="Linked Data Platform Container">LDPC</abbr></dfn>)</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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		The membership triples of a container all have the same
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		subject and predicate, and the objects of the membership triples define
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		the container's members. 
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	<p></p></dd>
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	<dt><dfn>Membership subject</dfn></dt>
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	<dd>The subject 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>Membership predicate</dfn></dt>
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	<dd>The predicate of all a LDPC's <a title="Membership triples">membership triples</a>.
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	<p></p></dd>
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	<dt><dfn>Non-member resource</dfn></dt>
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	<dd>A resource associated with a LDPC by a server for the purpose of enabling clients to
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	retrieve a subset of the LDPC's state, namely the subset that omits the LDPC's membership triples.
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	In other words, the union of the non-member resource's state and the LDPC's membership triples
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	exactly equals the LDPC's state.
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	<p></p></dd>
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	<dt><dfn>Resource inlining</dfn></dt>
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	<dd>
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		The practice of responding to a HTTP <code>GET</code> request made to a <code>request-URI</code> R<sub>0</sub> with
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		a representation that includes the state of R<sub>0</sub>, the <em>entire</em> state of resources accessed through
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		<em>other</em> <code>request-URI</code>(s) R<sub>1</sub>...R<sub>n</sub>, <em>and assertions</em> from the server 
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		identifying the additional resources whose
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		entire state has been provided.
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		R<sub>1</sub>...R<sub>n</sub> identify the inlined resource(s).
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		See <a href="#ldpr-inlining" class="sectionRef"></a> for details.
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	<p></p></dd>
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	<dt><dfn>Member inlining</dfn></dt>
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	<dd>A special case of <a title="Resource inlining">resource inlining</a>, where all members of a container on a given
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		page are inlined.  The response page may or may not include all of the container's members.
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		See <a href="#ldpc-inlining" class="sectionRef"></a> for details.
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	<p></p></dd>
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  </dl>
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<section>
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<h2 id="conventions">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>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>informative</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>A. Acknowledgements: <b>normative</b></li> 
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  <li>B. Change History: <b>normative</b></li>
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  <li>D.1 Normative references: <b>normative</b></li>
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  <li>D.2 Informative references: <b>informative</b></li>
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</ul>
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<p>A conforming <b>LDP Server</b> is an application program that processes HTTP 
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requests and generates HTTP responses that conform to the rules defined in sections on <a href="#linked-data-platform-resources">LDPRs</a>
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and <a href="#linked-data-platform-containers">LDPCs</a>.</p>
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<p>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 sections on <a href="#linked-data-platform-resources">LDPRs</a>
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and <a href="#linked-data-platform-containers">LDPCs</a>.</p>
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</section>
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<section>
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<h1 id="ldpr">Linked Data Platform Resources</h1>
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	<p>Linked Data Platform Resources (<dfn><abbr title="Linked Data Platform Resources">LDPRs</abbr></dfn>) are HTTP resources
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		that conform to the simple patterns and conventions in this section.
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		HTTP requests to access, modify, create or delete LDPRs are accepted
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		and processed by LDPR servers. Most LDPRs are domain-specific resources
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		that contain data for an entity in some domain, which could be
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		commercial, governmental, scientific, religious, or other.</p>
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	<p>Some of the rules defined in this document provide
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		clarification and refinement of the base Linked Data rules [[LINKED-DATA]];
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		others address additional needs.</p>
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	<p>The rules for Linked Data Platform Resources address basic
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		questions such as:</p>
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	<ul>
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		<li>What resource formats should be used?</li>
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		<li>How is optimistic collision detection handled for updates?</li>
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		<li>What should client expectations be for changes to linked-to resources,
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				such as type changes?</li>
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		<li>What can servers do to ease the burden of constraints for resource
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				creation?</li>
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		<li>How	do I GET the entries of a large resources broken up into pages?</li>
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	</ul>
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	<p>Additional informative guidance is available on the <a
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			href="http://www.w3.org/2012/ldp/wiki/Deployment_Guide"
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			class="external "
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			title="Deployment Guide"
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			rel="nofollow">working group's wiki</a> that addresses deployment
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		questions such as:</p>
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	<ul>
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		<li>What literal value types should be used?</li>
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		<li>Are there some typical vocabularies that should be reused?</li>
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	</ul>
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	<p>The following sections define the rules and
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		guidelines for use of LDPRs. This document also explains how to include
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		information about each member in the resource’s own representation
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		and how to paginate the resource representation if it gets too big.</p>
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<section>
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<h2 id="ldpr-general">General</h2>
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	<div id="ldpr-4_1_1" class="rule">4.1.1 LDPR servers MUST at least be HTTP/1.1 conformant servers [[!HTTP11]].</div>
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	<div id="ldpr-4_1_2" class="rule">4.1.2 LDPR servers MUST provide an RDF representation for LDPRs. 
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	The HTTP Request-URI of the LDPR is typically the subject of most triples in the response.
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	</div>
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	<div id="ldpr-4_1_3" class="rule">4.1.3 LDPR servers MAY host a mixture of LDPRs and non-LDPRs. For example, it
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		is common for LDPR servers to need to host binary or text resources
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		that do not have useful RDF representations.
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	</div>
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	<div id="ldpr-4_1_4" class="rule">4.1.4 LDPRs SHOULD reuse existing vocabularies instead of creating
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		their own duplicate vocabulary terms.  In addition to this general rule, some specific cases are
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		covered by other conformance rules.
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	</div>
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	<div id="ldpr-4_1_4_1" class="rule">4.1.4.1 LDPR predicates SHOULD use standard vocabularies such as Dublin Core
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		[[!DC-TERMS]], RDF [[!RDF-PRIMER]] and RDF Schema [[!RDF-SCHEMA]], whenever
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		possible.
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	</div>
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	<div class="ldp-issue-pending">
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	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/77">ISSUE-77</a></div>
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	why MUST a LDPR declare its type?  remove 4.1.5
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	</div>
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	<div id="ldpr-4_1_5" class="rule"><del>4.1.5 LDPRs MUST use the predicate <code>rdf:type</code> to
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		represent the concept of type. The use of non-standard type
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		predicates, as well as <code>dcterms:type</code>, is
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		discouraged, as it is not recommended
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		by the Dublin Core Metadata Initiative for use with RDF resources [[!DC-RDF]]. </del>
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	</div>
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	<div id="ldpr-4_1_6" class="rule">4.1.6 LDPR representations SHOULD have at least one <code>rdf:type</code>
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		set explicitly.  This makes the representations much more useful to
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		client applications that don’t support inferencing.
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	</div>
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	<div id="ldpr-4_1_7" class="rule">4.1.7 LDPRs MUST use at least one RDF triple to represent a link
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diff changeset
   371
		(relationship) to another resource. In other words, having the source
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   372
		resource’s URI as the subject and the target resource’s URI as the
33
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
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parents: 21
diff changeset
   373
		object of the triple representing the link (relationship) is enough and
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   374
		does not require the creation of an intermediate link resource to
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   375
		describe the relationship.
175
bcc13fba2593 issue-58 action 87 warnings about inlining
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parents: 174
diff changeset
   376
	</div>
69
0f9825dea52b Updating some simple formatting, reorganizing open issues and todos
sspeiche
parents: 68
diff changeset
   377
		
124
6f1d7304f03f create different styles to differentiate issues based on their status: open, pending, closed
Arnaud Le Hors <lehors@us.ibm.com>
parents: 122
diff changeset
   378
	<div class="ldp-issue-closed">
69
0f9825dea52b Updating some simple formatting, reorganizing open issues and todos
sspeiche
parents: 68
diff changeset
   379
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/44">ISSUE-44</a></div>
111
7b5387b10b06 ISSUE-9 Moved section 4.1.7 out of spec to the Deployment_Guide
sspeiche
parents: 110
diff changeset
   380
	4.1.9.(now 4.1.7) is obscure or too restrictive
69
0f9825dea52b Updating some simple formatting, reorganizing open issues and todos
sspeiche
parents: 68
diff changeset
   381
	</div>
111
7b5387b10b06 ISSUE-9 Moved section 4.1.7 out of spec to the Deployment_Guide
sspeiche
parents: 110
diff changeset
   382
	<div id="ldpr-4_1_8" class="rule">4.1.8 LDPR servers 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
   383
		necessary to conform to this specification. These
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   384
		could be other RDF formats, like N3 or NTriples, but non-RDF formats
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
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parents:
diff changeset
   385
		like HTML [[!HTML401]] and JSON [[!RFC4627]] would be likely be common.
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
   386
	</div>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   387
		
111
7b5387b10b06 ISSUE-9 Moved section 4.1.7 out of spec to the Deployment_Guide
sspeiche
parents: 110
diff changeset
   388
	<div id="ldpr-4_1_9" class="rule">4.1.9 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
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parents:
diff changeset
   389
		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
   390
		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
   391
		normative requirements.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   392
	</div>
111
7b5387b10b06 ISSUE-9 Moved section 4.1.7 out of spec to the Deployment_Guide
sspeiche
parents: 110
diff changeset
   393
	<div id="ldpr-4_1_10" class="rule">4.1.10 LDPR server 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
   394
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
   395
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   396
	
124
6f1d7304f03f create different styles to differentiate issues based on their status: open, pending, closed
Arnaud Le Hors <lehors@us.ibm.com>
parents: 122
diff changeset
   397
	<div class="ldp-issue-open">
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   398
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/16">ISSUE-16</a></div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   399
	Redirection of non-information resources to LDPRs
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   400
	</div>
124
6f1d7304f03f create different styles to differentiate issues based on their status: open, pending, closed
Arnaud Le Hors <lehors@us.ibm.com>
parents: 122
diff changeset
   401
	<div class="ldp-issue-pending">
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   402
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/19">ISSUE-19</a></div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   403
	Adressing more error cases
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   404
	</div>	
152
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   405
	<div class="ldp-issue-pending">
43
6d2805d7c6bf Added new issues ranging from 26-43. Removed closed/deferred issues: 2 & 3
sspeiche
parents: 42
diff changeset
   406
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/32">ISSUE-32</a></div>
6d2805d7c6bf Added new issues ranging from 26-43. Removed closed/deferred issues: 2 & 3
sspeiche
parents: 42
diff changeset
   407
	How can clients discover that a resource is an LDPR or LDPC, and what features are supported?
6d2805d7c6bf Added new issues ranging from 26-43. Removed closed/deferred issues: 2 & 3
sspeiche
parents: 42
diff changeset
   408
	</div>
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
   409
111
7b5387b10b06 ISSUE-9 Moved section 4.1.7 out of spec to the Deployment_Guide
sspeiche
parents: 110
diff changeset
   410
	<div id="ldpr-4_1_11" class="rule">4.1.11 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
   411
		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
   412
		It is
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
   413
		common for LDPR servers to put restrictions on representations – for
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
   414
		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
   415
		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
   416
		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
   417
		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
   418
		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
   419
		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
   420
	</div>
149
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   421
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   422
<div class="ldp-issue-pending">
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   423
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/57">ISSUE-57</a></div>
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   424
	How can a client determine that it is in communication with an LDP server?
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   425
	</div>
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   426
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   427
	<div id="ldpr-4_1_12" class="rule">4.1.12 LDPR servers
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   428
		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
   429
		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
   430
		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
   431
		in all responses to requests made 
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   432
		to the resource's HTTP <code>request-URI</code>. This is notionally equivalent to the
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   433
		presence of a <code>&lt; subject-URI, rdf:type , ldp:Resource &gt;</code> triple in the resource.
149
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   434
		The HTTP <code>Link</code> header is the method by which servers assert their support for the LDP spec in a way
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   435
		that clients can introspect dynamically at run-time.  Conservative clients should note that 
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   436
		a server can host a mixture of LDPRs and other resources, and therefore there is no implication
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   437
		that LDP support advertised on one HTTP <code>request-URI</code> means that other 
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   438
		resources on the same server are also LDPRs.  Each HTTP <code>request-URI</code> needs to be 
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   439
		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
   440
	</div>
152
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   441
<div class="ldp-issue-pending">
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   442
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/78">ISSUE-78</a></div>
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   443
	inferencing levels
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   444
	</div>
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   445
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   446
	<div id="ldpr-4_1_13" class="rule">4.1.13 LDPR servers
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   447
		MUST NOT require LDP clients to implement inferencing in order to recognize the subset
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   448
		of content defined by LDP.  Other specifications built on top of LDP MAY require clients
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   449
		to implement inferencing.  The practical implication is that all content defined by LDP
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   450
		must be explicitly represented. 
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   451
	</div>
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   452
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   453
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   454
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   455
<section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   456
<h2 id="ldpr-HTTP_GET">HTTP GET</h2>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   457
	<div id="ldpr-4_2_1" class="rule">4.2.1 LDPR servers MUST support the HTTP GET Method for LDPRs.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   458
	</div>
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
   459
	<div id="ldpr-4_2_2" class="rule">4.2.2 LDPR servers MUST provide a <code>text/turtle</code>
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
   460
		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
   461
	</div>
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
   462
	<div id="ldpr-4_2_3" class="rule">4.2.3 LDPR servers MAY provide 
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
   463
		representations of the requested LDPR beyond those
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
   464
		necessary to conform to this specification, using standard HTTP content negotiation. 
14
1d0aec0889c3 Setting mercurial auto model var
sspeiche
parents: 13
diff changeset
   465
		If the client does not indicate a preference, <code>text/turtle</code> MUST be returned.
69
0f9825dea52b Updating some simple formatting, reorganizing open issues and todos
sspeiche
parents: 68
diff changeset
   466
	</div>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   467
	<div id="ldpr-4_2_4" class="rule">4.2.4 In the absence of special knowledge of the application or domain, 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
   468
		clients 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
   469
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   470
	<div id="ldpr-4_2_5" class="rule">4.2.5 In the absence of special knowledge of the application or domain, LDPR
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   471
		clients 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
   472
		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
   473
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   474
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   475
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   476
<section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   477
<h2 id="ldpr-HTTP_POST">HTTP POST</h2>
93
598be81efe5f Expanded on wording for 4.3 to be more consistent
sspeiche
parents: 92
diff changeset
   478
	<p>This specification adds no new requirements on HTTP POST for LDPRs 
598be81efe5f Expanded on wording for 4.3 to be more consistent
sspeiche
parents: 92
diff changeset
   479
		only when the LDPR supports that method.  This specification does not impose any
598be81efe5f Expanded on wording for 4.3 to be more consistent
sspeiche
parents: 92
diff changeset
   480
		new requirement to support that method, and [[!HTTP11]] makes it optional</p>
170
4bba75f6d0af ISSUE-15 Inserted 5.4.12, 5.6.4, 5.7.2 to describe link-relation meta usage
sspeiche
parents: 169
diff changeset
   481
	<p>Creation of LDPRs is done via HTTP POST to a LDPC, see the section <a href="#ldpc-HTTP_POST">HTTP POST</a>
4bba75f6d0af ISSUE-15 Inserted 5.4.12, 5.6.4, 5.7.2 to describe link-relation meta usage
sspeiche
parents: 169
diff changeset
   482
	 in the LDPC parent section for more details.</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   483
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   484
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   485
<section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   486
<h2 id="ldpr-HTTP_PUT">HTTP PUT</h2>
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
   487
	<p>This specification imposes the following new requirements on HTTP PUT for LDPRs 
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
   488
		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
   489
		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
   490
		
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   491
	<div id="ldpr-4_4_1" class="rule">4.4.1 If HTTP PUT is performed on an existing resource, LDPR servers MUST
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   492
		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
   493
		the entity representation in the body of the request. 
92
18891627c17f Fixed 2 old references to BPR
sspeiche
parents: 91
diff changeset
   494
		LDPR servers 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
   495
		and <code>dcterms:creator</code> if they are not under
2f8a2d58e65c ISSUE-11 - 4.4.1 Relaxed the MUST ignore dc:modified/creator to MAY
sspeiche
parents: 60
diff changeset
   496
		client control. Any LDPR servers that wish
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   497
		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
   498
		with existing state stored on the server for a resource MUST use HTTP
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   499
		PATCH, not HTTP PUT.
61
2f8a2d58e65c ISSUE-11 - 4.4.1 Relaxed the MUST ignore dc:modified/creator to MAY
sspeiche
parents: 60
diff changeset
   500
	</div>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   501
		
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   502
	<div id="ldpr-4_4_2" class="rule">4.4.2 LDPR clients SHOULD use the HTTP <code>If-Match</code>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   503
		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
   504
		modifying a resource that has changed since the client last retrieved
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   505
		its representation. LDPR servers SHOULD require the HTTP <code>If-Match</code> header and HTTP <code>ETags</code>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   506
		to detect collisions. LDPR servers MUST respond with status code 412
122
14197f56039e Issue-74 resolution - 428 precondition required
John Arwe
parents: 120
diff changeset
   507
		(Condition Failed) if <code>ETag</code>s fail to match when there are no other
14197f56039e Issue-74 resolution - 428 precondition required
John Arwe
parents: 120
diff changeset
   508
		errors with the request [[!HTTP11]].  LDPR servers that require conditional requests MUST respond with status code 428
14197f56039e Issue-74 resolution - 428 precondition required
John Arwe
parents: 120
diff changeset
   509
		(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
   510
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   511
	<div id="ldpr-4_4_3" class="rule">4.4.3 LDPR clients 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
   512
		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
   513
		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
   514
		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
   515
		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
   516
		set.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   517
	</div>
80
de9e15f7d9d5 Comments received from David Wood: 5.3.7 & 5.1.3 clarity, other minor edits (part 2)
sspeiche
parents: 79
diff changeset
   518
	<div id="ldpr-4_4_4" class="rule">4.4.4 LDPR clients SHOULD assume that an LDPR server could discard triples
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   519
		whose predicates the server does not recognize or otherwise chooses
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   520
		not to persist. In other words, LDPR servers MAY restrict themselves
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   521
		to a known set of predicates, but LDPR clients MUST NOT restrict themselves to a known set of predicates 
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   522
		when their intent is to perform a later HTTP PUT to update the resource.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   523
	</div>
80
de9e15f7d9d5 Comments received from David Wood: 5.3.7 & 5.1.3 clarity, other minor edits (part 2)
sspeiche
parents: 79
diff changeset
   524
	<div id="ldpr-4_4_5" class="rule">4.4.5 An LDPR client MUST preserve all triples retrieved using HTTP GET that
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   525
		it doesn’t change whether it understands the predicates or not, when
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   526
		its intent is to perform an update using HTTP PUT.  The use of HTTP
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   527
		PATCH instead of HTTP PUT for update avoids this burden for clients
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   528
		[[RFC5789]].
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   529
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   530
	<div id="ldpr-4_4_6" class="rule">4.4.6 LDPR servers MAY choose to allow the creation of new resources using HTTP PUT.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   531
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   532
	<div id="ldpr-4_4_7" class="rule">4.4.7 LDPR servers 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
   533
		requiring detailed knowledge of server-specific constraints.  
111
7b5387b10b06 ISSUE-9 Moved section 4.1.7 out of spec to the Deployment_Guide
sspeiche
parents: 110
diff changeset
   534
		This is a consequence of the requirement to <a href="#ldpr-4_1_11">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
   535
	</div>		
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   536
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   537
		
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   538
<section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   539
<h2 id="ldpr-HTTP_DELETE">HTTP DELETE</h2>
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
   540
	<p>This specification imposes the following new requirements on HTTP DELETE for LDPRs 
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
   541
		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
   542
		new requirement to support that method, and [[!HTTP11]] makes it optional.</p>
171
bfb383feed88 Moved 5.7.* sections out of HEAD and into OPTIONS as 5.9.*, added 4.6.2
sspeiche
parents: 170
diff changeset
   543
	<p>Additional requirements on HTTP DELETE of LDPRs within containers can be found in
bfb383feed88 Moved 5.7.* sections out of HEAD and into OPTIONS as 5.9.*, added 4.6.2
sspeiche
parents: 170
diff changeset
   544
	<a href="ldpc-HTTP_DELETE">section 5.6</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
   545
		
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   546
	<div id="ldpr-4_5_1" class="rule">4.5.1 LDPR servers MUST remove the resource identified by the Request-URI.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   547
		After a successful HTTP DELETE, a subsequent HTTP GET on the same
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   548
		Request-URI 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
   549
		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
   550
	</div>
19
52d63fdf6ae8 ISSUE-24: Should DELETED resources remain deleted?
sspeiche
parents: 18
diff changeset
   551
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   552
	<div id="ldpr-4_5_2" class="rule">4.5.2 LDPR servers MAY alter the state of other resources as a result of an
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   553
		HTTP DELETE request. For example, it is acceptable for the server to
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   554
		remove triples from other resources whose subject or object is the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   555
		deleted resource. It is also acceptable and common for LDPR servers to
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   556
		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
   557
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   558
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   559
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   560
<section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   561
<h2 id="ldpr-HTTP_HEAD">HTTP HEAD</h2>
114
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
   562
	<p>Note that certain LDP mechanisms, such as paging, rely on HTTP headers, and HTTP generally requires that
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
   563
		HEAD responses include the same headers as GET responses.  
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
   564
		Thus, implementers should also carefully read the
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
   565
		<a href="#ldpr-HTTP_GET">GET section</a>.</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   566
	<div id="ldpr-4_6_1" class="rule">4.6.1 LDPR servers MUST support the HTTP HEAD method.</div>
171
bfb383feed88 Moved 5.7.* sections out of HEAD and into OPTIONS as 5.9.*, added 4.6.2
sspeiche
parents: 170
diff changeset
   567
	<div id="ldpr-4_6_2" class="rule">4.6.2 LDPR servers MUST support the HTTP response headers defined in section <a href="#ldpr-HTTP_OPTIONS">4.8 HTTP OPTIONS</a>.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   568
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   569
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   570
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   571
<section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   572
<h2 id="ldpr-HTTP_PATCH">HTTP PATCH</h2>
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
   573
	<p>This specification imposes the following new requirements on HTTP PATCH for LDPRs 
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
   574
		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
   575
		new requirement to support that method, and [[!HTTP11]] makes it optional.</p>
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   576
		
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   577
	<div id="ldpr-4_7_1" class="rule">4.7.1 LDPR servers MAY implement HTTP PATCH 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
   578
		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
   579
		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
   580
	</div>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   581
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   582
	<div id="ldpr-4_7_2" class="rule">4.7.2 LDPR servers 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
   583
		requiring detailed knowledge of server-specific constraints.  
111
7b5387b10b06 ISSUE-9 Moved section 4.1.7 out of spec to the Deployment_Guide
sspeiche
parents: 110
diff changeset
   584
		This is a consequence of the requirement to <a href="#ldpr-4_1_11">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
   585
	</div>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   586
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
   587
	<div id="ldpr-4_7_3" class="rule">4.7.3 LDPR servers SHOULD NOT allow clients to create new resources using PATCH.
115
c8f6c689d373 issue 43 use slug per atompub
John Arwe
parents: 114
diff changeset
   588
		<a href="#ldpc-HTTP_POST">POST (to an LDPC)</a> and/or <a href="#ldpc-HTTP_PUT">PUT</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
   589
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   590
	
124
6f1d7304f03f create different styles to differentiate issues based on their status: open, pending, closed
Arnaud Le Hors <lehors@us.ibm.com>
parents: 122
diff changeset
   591
	<div class="ldp-issue-pending">
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   592
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/32">ISSUE-32</a></div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   593
	How can clients discover that a resource is an LDPR or LDPC, and what features are supported?
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   594
	</div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   595
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   596
	<div id="ldpr-4_7_4" class="rule">4.7.4 LDPR servers that support PATCH MUST
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   597
		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
   598
		requests, listing patch document media type(s) supported by the server.
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   599
	</div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   600
	
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   601
	<div class="ldp-issue-pending">
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   602
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/17">ISSUE-17</a></div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   603
	changesets as a recommended PATCH format
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   604
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   605
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   606
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   607
<section>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   608
<h2 id="ldpr-HTTP_OPTIONS">HTTP OPTIONS</h2>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   609
	<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
   610
		beyond those in [[!HTTP11]].  Other sections of this specification, for example 
167
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   611
		<a href="#ldpr-HTTP_PATCH">PATCH</a>,
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   612
		<a href="#header-accept-post">Accept-Post</a>
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   613
		and <a href="#ldpr-paging-HTTP_OPTIONS">Paging</a>,
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   614
		add other requirements on <code>OPTIONS</code> responses.
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   615
		</p>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   616
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   617
	<div class="ldp-issue-pending">
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   618
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/32">ISSUE-32</a></div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   619
	How can clients discover that a resource is an LDPR or LDPC, and what features are supported?
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   620
	</div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   621
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   622
	<div id="ldpr-4_8_1" class="rule">4.8.1 LDPR servers MUST support the HTTP <code>OPTIONS</code> method.</div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   623
		
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   624
	<div id="ldpr-4_8_2" class="rule">4.8.2 LDPR servers MUST indicate their support for HTTP Methods by
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   625
		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
   626
		Method tokens in the HTTP response header “<code>Allow</code>”.
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   627
	</div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   628
		
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   629
</section>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   630
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   631
<section>
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   632
<h2 id="ldpr-Paging">Paging</h2>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   633
<em>Suggest creating a separate "last" section for LDPRs to not clutter everything else</em>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   634
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   635
<section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   636
<h3 id="ldpr-PagingIntro">Introduction</h3>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   637
	<em>This section is non-normative</em>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   638
	<p>It sometimes happens that a
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   639
		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
   640
		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
   641
		representation includes many triples both from its own representation and
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   642
		from the representations of any of its members. A client could anticipate that a resource will be too large -
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   643
		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
   644
		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
   645
		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
   646
		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)
sspeiche
parents: 130
diff changeset
   647
		Alternatively, a server could recognize that a resource that has been
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   648
		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
   649
	<p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   650
		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)
sspeiche
parents: 130
diff changeset
   651
		simple RDF pattern. For each resource, <code>&lt;resourceURL&gt;</code>, we define a new
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   652
		'first page' resource.  In this example, its URL will be <code>&lt;containerURL&gt;?firstPage</code>,
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   653
		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
   654
		The triples in the representation of the each page
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   655
		are a subset of the triples in the resource
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   656
		- same subject, predicate and object.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   657
	</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   658
	<p>LDPR servers may respond to requests for a
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   659
		resource by redirecting the client to the first page resource –
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   660
		using a 303 “See Other” redirect to the actual URL for the page
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   661
		resource.</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   662
	<p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   663
		Looking at an example resource representing JohnZSmith's net
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   664
		worth, we’ll split the response across two pages.  
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   665
		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)
sspeiche
parents: 130
diff changeset
   666
		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
   667
		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
   668
		of the first page resource.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   669
		The client then 
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   670
		requests the first page as <code>http://example.org/netWorth/nw1/assetContainer/?firstPage</code>:
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   671
	</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   672
<pre class="example"># The following is the representation of
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   673
#    http://example.org/netWorth/nw1/assetContainer/?firstPage
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   674
@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
   675
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   676
@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
   677
@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
   678
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   679
&lt;http://example.org/netWorth/nw1/assetContainer/&gt;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   680
   a ldp:Container;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   681
   dcterms:title "The assets of JohnZSmith";
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   682
   ldp:membershipSubject &lt;http://example.org/netWorth/nw1&gt;;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   683
   ldp:membershipPredicate o:asset.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   684
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   685
&lt;http://example.org/netWorth/nw1/assetContainer/?firstPage&gt;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   686
   a ldp:Page;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   687
   ldp:pageOf &lt;http://example.org/netWorth/nw1/assetContainer/&gt;;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   688
   ldp:nextPage &lt;http://example.org/netWorth/nw1/assetContainer/?p=2&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   689
 
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   690
&lt;http://example.org/netWorth/nw1&gt;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   691
    a o:NetWorth;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   692
	o:asset
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   693
	&lt;http://example.org/netWorth/nw1/assetContainer/a1&gt;,
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   694
	&lt;http://example.org/netWorth/nw1/assetContainer/a4&gt;,
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   695
	&lt;http://example.org/netWorth/nw1/assetContainer/a3&gt;,
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   696
	&lt;http://example.org/netWorth/nw1/assetContainer/a2&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   697
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   698
&lt;http://example.org/netWorth/nw1/assetContainer/a1&gt;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   699
   a o:Stock;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   700
   o:value 100.00.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   701
&lt;http://example.org/netWorth/nw1/assetContainer/a2&gt;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   702
   a o:Cash;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   703
   o:value 50.00.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   704
# server initially supplied no data for a3 and a4 in this response</pre>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   705
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   706
	<p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   707
		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
   708
		for the next page:
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   709
	</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   710
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   711
<pre class="example"># The following is the representation of
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   712
#  http://example.org/netWorth/nw1/assetContainer/?p=2
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   713
@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
   714
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   715
@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
   716
@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
   717
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   718
&lt;http://example.org/netWorth/nw1/assetContainer/&gt;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   719
   a ldp:Container;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   720
   dcterms:title "The assets of JohnZSmith";
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   721
   ldp:membershipSubject &lt;http://example.org/netWorth/nw1&gt;;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   722
   ldp:membershipPredicate o:asset.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   723
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   724
&lt;http://example.org/netWorth/nw1/assetContainer/?p=2&gt;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   725
   a ldp:Page;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   726
   ldp:pageOf &lt;http://example.org/netWorth/nw1/assetContainer/&gt;;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   727
   ldp:nextPage rdf:nil.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   728
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   729
&lt;http://example.org/netWorth/nw1&gt;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   730
   a o:NetWorth;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   731
   o:asset 
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   732
      &lt;http://example.org/netWorth/nw1/assetContainer/a5&gt;.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   733
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   734
&lt;http://example.org/netWorth/nw1/assetContainer/a5&gt;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   735
   a o:Stock;
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   736
   dcterms:title "Big Co.";
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   737
   o:value 200.02.</pre>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   738
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   739
	<p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   740
		In this example, there is only one member in the container in the
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   741
		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
   742
		predicate of the page resource.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   743
	</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   744
	<p>LDPC guarantees that any and all the triples
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   745
		about the members will be on the same page as the membership triple
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   746
		for the member.</p>		
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   747
</section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   748
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   749
<section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   750
<h3 id="ldpr-PagingGET">HTTP GET</h3>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   751
<p>In addition to the requirements set forth in section (HTTP GET), LDPR Servers that support paging must also follow the requirements in this section</p>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   752
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   753
	<div id="ldpr-5_3_4" class="rule">5.3.4 LDPR servers SHOULD allow clients to retrieve large LDPRs in
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   754
		pages. In responses to <code>GET</code> requests with an LDPR as the Request-URI, 
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   755
		LDPR servers that support paging SHOULD provide an HTTP <code>Link</code>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   756
		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
   757
		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
   758
		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
   759
		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
   760
		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
   761
		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
   762
		The representation for any page, including the first, will include
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   763
		the URL for the next page. See section <a href="#ldpr-paging">4.7 Paging</a> for additional details.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   764
	</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   765
	<div id="ldpc-5_3_5" class="rule">5.3.5 LDPR servers MAY split the response representation of any LDPR. 
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   766
		This is known as
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   767
		server-initiated paging. See section  <a href="#ldpr-paging">4.7 Paging</a> for
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   768
		additional details.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   769
	</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   770
	<div id="ldpc-5_3_5_1" class="rule">5.3.5.1 LDPR servers that initiate paging SHOULD respond to requests for a LDPR
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   771
		by redirecting the client to the first page resource using a <code>303 See
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   772
		Other</code> response with an HTTP <code>Location</code> header providing the first page resource URL.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   773
	</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   774
	<div id="ldpc-5_3_6" class="rule">5.3.6 LDPR servers that support paging MUST include in the page
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   775
		representation a representation for the LDPR, such that:
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   776
	</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   777
	<div id="ldpc-5_3_6_1" class="rule">5.3.6.1 The page resource representation SHOULD have one triple to indicate its
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   778
		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
   779
		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
   780
		whose  subject is the URL of the page, predicate is <code>ldp:pageOf</code>,
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   781
		and object is the URL of the LDPC.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   782
	</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   783
	<div id="ldpc-5_3_6_2" class="rule">5.3.6.2 The page resource representation MUST have one triple with the subject
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   784
		of the page, predicate of <code>ldp:nextPage</code> and
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   785
		object being the URL for the subsequent page.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   786
	</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   787
	<div id="ldpc-5_3_6_3" class="rule">5.3.6.3 The last page resource representation MUST have one triple with the subject of the 
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   788
	    last page, predicate of <code>ldp:nextPage</code> and object being <code>rdf:nil</code>.
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   789
	</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   790
</section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   791
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   792
<section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   793
<h3 id="ldpr-paging-HTTP_OPTIONS">HTTP OPTIONS</h3>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   794
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   795
	<div class="ldp-issue-pending">
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   796
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/32">ISSUE-32</a></div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   797
	How can clients discover that a resource is an LDPR or LDPC, and what features are supported?
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   798
	</div>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   799
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   800
<div id="ldpr-4_9_3_1" class="rule">4.9.3.1 LDPR servers MUST indicate their support for client-initiated paging by
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   801
	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
   802
	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
   803
</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   804
</section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   805
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   806
</section>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   807
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   808
<section>
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   809
<h2 id="ldpr-inlining">Resource Inlining: Representing Multiple Resources in a Response</h2>
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   810
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   811
	<div class="ldp-issue-open">
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   812
	The contents of this section are AT RISK.  They may be removed after Last Call based on community feedback.
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   813
	</div>
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   814
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   815
<section>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   816
<h3 id="ldpr-InliningIntro">Introduction</h3>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   817
	<em>This section is non-normative.</em>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   818
	
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   819
	<p>Servers whose resources are relatively granular may wish to optimistically provide more information
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   820
		in a response than what the client actually requested, in order to reduce the average number of client
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   821
		application HTTP flows.  LDP provides some basic building blocks to enable
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   822
		this, that implementations can re-use to build complete solutions, and they may serve as 
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   823
		complete solutions in applications with sufficient controls on resource content.
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   824
		These building blocks are <a>resource inlining</a> and <a>member inlining</a>.
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   825
	</p>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   826
	
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   827
	<p>LDP does not provide clients with any way to detect whether or not the server is capable of 
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   828
		inlining (all its resources or any specific resource), nor does it provide clients 
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   829
		with any way to influence which (if any) resources are inlined in any given response.
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   830
	</p>
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   831
	
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   832
	<p>
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   833
		Servers can return extra triples on any response, but fail to meet the definition of <a>resource inlining</a>, 
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   834
		by either returning a subset of the other resource(s) triples or by failing to assert that
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   835
		all triples were included (even through they were).  Clients might still find the extra
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   836
		information useful, but the only way for clients to be sure they had all available 
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   837
		information would be to make a HTTP <code>GET</code> request against all the other resource(s).
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   838
		In some applications, knowing that these requests are unnecessary saves significant latency
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   839
		and server/network load.
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   840
	</p>
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   841
</section> <!-- h3 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   842
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   843
<section>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   844
<h3 id="ldpr-InliningWarnings">Use with Care</h3>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   845
	<em>This section is non-normative.</em>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   846
	
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   847
	<div class="ldp-issue-pending">
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   848
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/58">ISSUE-58</a></div>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   849
	Action 87: Add an informative section on the possible dangers of inlining resources
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   850
	</div>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   851
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   852
	<p>The building blocks LDP provides can only be safely used if certain assumptions hold.  
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   853
	Said another way, resource inlining solves a subset of scenarios, not all scenarios in the general case &mdash;
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   854
	so if you care about any of the following in a given application, your server should avoid returning
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diff changeset
   855
	<em>any</em> triples beyond those found at the HTTP <code>request-URI</code>.
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
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parents: 173
diff changeset
   856
	</p>
175
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John Arwe
parents: 174
diff changeset
   857
	<ul>
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John Arwe
parents: 174
diff changeset
   858
	<li><p>
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   859
		Provenance is lost: because RDF graphs from multiple HTTP resources are merged in the
178
0ec347702232 issue-58 proofing nits
John Arwe
parents: 176
diff changeset
   860
		response without attributing each statement to its originating graph (i.e. without quotation),
0ec347702232 issue-58 proofing nits
John Arwe
parents: 176
diff changeset
   861
		it is impossible for a client to reliably know which
175
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John Arwe
parents: 174
diff changeset
   862
		triples came from which HTTP resource(s).  A general solution allowing quotation is
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John Arwe
parents: 174
diff changeset
   863
		RDF Datasets; that is expected to be standardized independently, and can be used in these cases
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   864
		once it is available.
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   865
	</p></li>
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   866
	<li><p>
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   867
		The response may contain contradictions that are trivially obvious (or subtle), and those may or 
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   868
		may not be a problem at the application level.  For a trivial example, two triples may have
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   869
		identical subjects and predicates but different objects: "75F is too hot"; "75F is too cold".
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   870
		Again, quotation via RDF Datasets (or any equivalent mechanism) is believed to provide a 
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   871
		long term solution once standardized.
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   872
	</p></li>
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   873
	</ul>
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   874
</section> <!-- h3 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   875
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   876
<section>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   877
<h3 id="ldpr-InliningGET">HTTP GET</h3>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   878
	<p>In addition to the requirements set forth in other sections, 
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   879
		LDPR Servers that support <a>resource inlining</a>
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   880
		must also follow the requirements in this section.</p>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   881
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   882
	<div class="ldp-issue-pending">
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   883
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/58">ISSUE-58</a></div>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   884
	Action 89: Add a predicate ldp:inlinedResource the object of which is a URI of a linked resource that is fully inlined, 
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   885
	marked as AT RISK.
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   886
	</div>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   887
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   888
	<div id="ldpr-4_10_2_1" class="rule">4.10.2.1 LDPR servers that support <a>resource inlining</a> MUST 
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   889
		include a <code>ldp:Page</code> resource in the representation describing the set of inlined resources, 
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   890
		whether or not the representation contains subsequent pages.  The <code>ldp:Page</code> resource conceptually contains
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   891
		metadata about the representation; it is usually not part of the HTTP resource's state, and its presence does not indicate that
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   892
		the LDPR server supports <a href="#ldpr-Paging">paging</a> in general.  
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   893
		LDPR servers that include the <code>ldp:Page</code> resource for inlining and also support 
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   894
		paging MUST use the same <code>ldp:Page</code> resource for the triples required by both,
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   895
		in order to minimize client code complexity.
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   896
		The <code>ldp:Page</code> resource's triples are the LDP-defined means by which the servers communicate to LDP clients 
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   897
		the set of HTTP resources whose state is included in a representation, allowing clients to avoid HTTP <code>GET</code>
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   898
		requests for them.
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   899
	</div>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   900
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   901
	<div id="ldpr-4_10_2_2" class="rule">4.10.2.2 LDPR servers that support <a>resource inlining</a> MUST 
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   902
		include the <code>ldp:Page</code> resource described in <a href="#ldpr-4_10_2_1">section 4.10.2.1</a> 
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   903
		one triple for each inlined resource, 
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   904
		whose subject is the <code>ldp:Page</code> resource URI,
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   905
		whose predicate is <code>ldp:inlinedResource</code>, and
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   906
		whose object is the HTTP <code>request-URI</code> of an inlined resource [[!HTTP11]].
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   907
	</div>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   908
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   909
	<div id="ldpc-4_10_2_3" class="rule">4.10.2.3 LDPR clients SHOULD avoid making HTTP <code>GET</code> requests
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   910
		against any resource whose HTTP <code>request-URI</code> is the object of a triple of the form 
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   911
		described in <a href="#ldpc-4_10_2_2">section 4.10.2.2</a>, unless there are application-specific
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   912
		reasons for doing so.  Clients should note that by the time the representation is received, the actual state
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   913
		of any inlined resource(s) may have changed due to subsequent requests.
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   914
	</div>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   915
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   916
	<div id="ldpc-4_10_2_4" class="rule">4.10.2.4 LDPR clients MUST NOT assume that LDPR representations
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   917
		lacking a <code>ldp:Page</code> resource or lacking the triple
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   918
		described in <a href="#ldpc-4_10_2_2">section 4.10.2.2</a> contain all the triples for any resource(s)
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   919
		listed in the representation whose HTTP <code>request-URI</code> differs from 
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   920
		the HTTP <code>request-URI</code> used by the client.  
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   921
		The representation might in fact contain all such triples, or some
175
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   922
		subset of them, and that might or might not be completely adequate for the client's intended usage, but
bcc13fba2593 issue-58 action 87 warnings about inlining
John Arwe
parents: 174
diff changeset
   923
		an LDP client has no way to discern from such a representation which interpretation is accurate.
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   924
	</div>
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   925
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   926
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   927
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   928
</section> <!-- h2 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   929
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   930
</section> <!-- h1 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   931
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   932
<section>
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
   933
<h1 id="ldpc">Linked Data Platform Containers</h1>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   934
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   935
<section class="informative">		
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   936
<h2 id="ldpc-informative">Informative</h2>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   937
	<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
   938
		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
   939
		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
   940
		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
   941
		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
   942
		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
   943
		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
   944
		are:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   945
	<ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   946
		<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
   947
		<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
   948
		<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
   949
		<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
   950
		<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
   951
	</ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   952
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   953
		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
   954
		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
   955
		defined by a set of triples in its representation (and state) called
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   956
		the membership triples. The membership triples of a container all
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   957
		have the same subject and predicate – the objects of the membership
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   958
		triples define the members of the container. The subject of the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   959
		membership triples is called the membership subject and the predicate
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   960
		is called the membership predicate. In the simplest cases, the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   961
		membership subject will be the LDPC resource itself, but it does not
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   962
		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
   963
		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
   964
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   965
	<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
   966
		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
   967
		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
   968
		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
   969
		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
   970
		container membership, and deleting containers removes membership information and
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
   971
		possibly perform some cleanup tasks on unreferenced member resoruces.</p>
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
   972
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   973
	<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
   974
		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
   975
		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
   976
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   977
<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
   978
#    http://example.org/container1/
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   979
@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
   980
@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
   981
@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
   982
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
   983
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   984
   a ldp:Container;
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
   985
   ldp:membershipSubject &lt;&gt;
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
   986
   ldp:membershipPredicate rdfs:member;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   987
   dcterms:title "A very simple container";
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
   988
   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
   989
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   990
	<p>This example is very straightforward - the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   991
			membership predicate is <code>rdfs:member</code> and the membership subject is the container
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   992
			itself. A POST to this container will create a new resource
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   993
			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
   994
			to the container.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   995
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   996
	<p>Sometimes it is useful to use a subject
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   997
	other than the container itself as the membership subject and to use
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
   998
	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
   999
	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
  1000
			
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1001
<pre class="example" id="ldpc-ex-membership-full"># The following is a partial representation of
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1002
#   http://example.org/netWorth/nw1
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1003
@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
  1004
@prefix o: &lt;http://example.org/ontology/&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1005
&lt;&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1006
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1007
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1008
   o:asset 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1009
      &lt;assetContainer/a1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1010
      &lt;assetContainer/a2&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1011
   o:liability 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1012
      &lt;liabilityContainer/l1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1013
      &lt;liabilityContainer/l2&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1014
      &lt;liabilityContainer/l3&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1015
</pre>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1016
	<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
  1017
	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
  1018
	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
  1019
	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
  1020
	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
  1021
	illustrated below:
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1022
	</p>
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
<pre class="example" id="ldpc-ex-membership-full"># The following is an elaborated representation of
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1025
#   http://example.org/netWorth/nw1
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1026
@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
  1027
@prefix o: &lt;http://example.org/ontology/&gt;.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1028
&lt;&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1029
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1030
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1031
   o:asset 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1032
      &lt;assetContainer/a1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1033
      &lt;assetContainer/a2&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1034
   o:liability 
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1035
      &lt;liabilityContainer/l1&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1036
      &lt;liabilityContainer/l2&gt;,
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1037
      &lt;liabilityContainer/l3&gt;.
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
&lt;assetContainer/&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1040
   a ldp:Container;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1041
   dcterms:title "The assets of JohnZSmith";
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1042
   ldp:membershipSubject &lt;.&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1043
   ldp:membershipPredicate o:asset.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1044
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1045
&lt;liabilityContainer/&gt;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1046
   a ldp:Container;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1047
   dcterms:title "The liabilities of JohnZSmith";
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1048
   ldp:membershipSubject &lt;.&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1049
   ldp:membershipPredicate o:liability.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1050
</pre>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1051
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1052
	<p>The essential structure of the container is
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1053
	the same, but in this example, the membership subject is not the
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1054
	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
  1055
	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
  1056
	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
  1057
	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
  1058
	to the container. You might wonder why
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1059
	<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
  1060
	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
  1061
	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
  1062
	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
  1063
	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
  1064
	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
  1065
	resources allows both assets and liabilities to be created.
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1066
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1067
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
  1068
<pre class="example" id="ldpc-ex-membership-subj">
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1069
# 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
  1070
#   http://example.org/netWorth/nw1/assetContainer/
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1071
@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
  1072
@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
  1073
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1074
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1075
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1076
   ldp:membershipSubject &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
  1077
   ldp:membershipPredicate o:asset.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1078
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1079
&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
  1080
   a o:NetWorth;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1081
   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
  1082
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1083
	<p>In this example, clients cannot simply guess
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1084
			which resource is the membership subject and which predicate is the
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1085
			membership predicate, so the example includes this information in
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1086
			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
  1087
	</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
	<div id="ldpc-member_data" class="rule">5.1.1 Container Member Information</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1090
	<em>This section is non-normative</em>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1091
	<p>In many – perhaps most – applications
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1092
		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
  1093
		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
  1094
		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
  1095
		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
  1096
		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
  1097
		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
  1098
		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
  1099
		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
  1100
		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
  1101
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1102
	<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
  1103
		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
  1104
		(assets) in the representation:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1105
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1106
<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
  1107
#	 http://example.org/netWorth/nw1/assetContainer/
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1108
@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
  1109
@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
  1110
@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
  1111
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1112
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1113
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1114
   dcterms:title "The assets of JohnZSmith";
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1115
   ldp:membershipSubject &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
  1116
   ldp:membershipPredicate o:asset.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1117
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1118
&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
  1119
   a o:NetWorth;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1120
   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
  1121
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1122
&lt;a1&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1123
   a o:Stock;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1124
   o:value 10000.
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1125
&lt;a2&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1126
   a o:Bond;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1127
   o:value 20000.
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1128
&lt;a3&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1129
   a o:RealEstateHolding;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1130
   o:value 300000.</pre>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1131
124
6f1d7304f03f create different styles to differentiate issues based on their status: open, pending, closed
Arnaud Le Hors <lehors@us.ibm.com>
parents: 122
diff changeset
  1132
<div class="ldp-issue-open">
102
04e3e77e4e78 Added open issues 50, 51, 55, 56, 57, 58, 59
Ashok Malhotra <Ashok.Malhotra@Oracle.com>
parents: 99
diff changeset
  1133
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/58">ISSUE-58</a></div>
04e3e77e4e78 Added open issues 50, 51, 55, 56, 57, 58, 59
Ashok Malhotra <Ashok.Malhotra@Oracle.com>
parents: 99
diff changeset
  1134
	Property for asserting that complete description of members is included in LDPC representation
04e3e77e4e78 Added open issues 50, 51, 55, 56, 57, 58, 59
Ashok Malhotra <Ashok.Malhotra@Oracle.com>
parents: 99
diff changeset
  1135
	</div>
04e3e77e4e78 Added open issues 50, 51, 55, 56, 57, 58, 59
Ashok Malhotra <Ashok.Malhotra@Oracle.com>
parents: 99
diff changeset
  1136
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1137
	<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
  1138
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1139
	<em>This section is non-normative</em>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1140
	<p>The representation of a container
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1141
		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
  1142
		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
  1143
		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
  1144
		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
  1145
		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
  1146
		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
  1147
		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
  1148
		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
  1149
	<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
  1150
		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
  1151
		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
  1152
		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
  1153
		associating SPARQL endpoints. [[SPARQL-QUERY]]</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1154
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1155
		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
  1156
		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
  1157
		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
  1158
		<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
  1159
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1160
<p>Request:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1161
<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
  1162
Host: example.org
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1163
Accept: text/turtle; charset=UTF-8
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1164
</pre>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1165
<p>Response:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1166
<pre class="example">HTTP/1.1 200 OK
13
eea17080fdf2 Minor typo fix and some notes
sspeiche
parents: 12
diff changeset
  1167
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
  1168
ETag: "_87e52ce291112"
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1169
Content-Length: 325
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1170
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1171
@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
  1172
@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
  1173
@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
  1174
74
30624f0a7534 Adding trailing '/' on Container URLs to help with readability based on WG suggestion
sspeiche
parents: 73
diff changeset
  1175
&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
  1176
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1177
   dcterms:title "A Linked Data Platform Container of Acme Resources";
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1178
   ldp:membershipSubject http://example.org/container1/;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1179
   ldp:membershipPredicate rdfs:member;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1180
   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
  1181
   
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1182
	<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
  1183
		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
  1184
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
  1185
	<div id="ldpc-5.1.3" class="rule">5.1.3 <strike>Paging</strike> <em>Was paging, moved to section 4</em></div>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1186
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1187
	<div id="ldpc-ordering" class="rule">5.1.4 Ordering</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1188
	<em>This section is non-normative</em>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1189
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1190
		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
  1191
		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
  1192
		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
  1193
		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
  1194
		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
  1195
		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
  1196
		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
  1197
		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
  1198
		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
  1199
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1200
	<p>
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1201
		Order becomes more important for LDPC servers when containers are
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1202
		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
  1203
		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
  1204
		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
  1205
		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
  1206
		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
  1207
		members on the next and previous pages.
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1208
		When the sort is ascending, all the members on a current page have a 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1209
		higher sort order than all members on the previous page and 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1210
		lower sort order than all the members on the next page. 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1211
		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
  1212
		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
  1213
		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
  1214
		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
  1215
		<code>ldp:containerSortCriteria</code> relation.
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1216
		Each member of the ordered list exposes one <code>ldp:containerSortCriterion</code>, 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1217
		consisting of a <code>ldp:containerSortPredicate</code>, 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1218
		<code>ldp:containerSortPredicate</code>, and 
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1219
		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
  1220
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1221
	<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
  1222
		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
  1223
<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
  1224
#   http://example.org/netWorth/nw1/assetContainer/
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1225
@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
  1226
@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
  1227
@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
  1228
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1229
&lt;&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1230
   a ldp:Container;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1231
   dcterms:title "The assets of JohnZSmith";
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1232
   ldp:membershipSubject &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
  1233
   ldp:membershipPredicate o:asset.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1234
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1235
&lt;?firstPage&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1236
   a ldp:Page;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1237
   ldp:pageOf &lt;&gt;;
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1238
   ldp:ContainerSortCriteria (#SortValueAscending).
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1239
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1240
&lt;#SortValueAscending&gt;
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1241
   a ldp:ContainerSortCriterion;
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1242
   ldp:containerSortOrder ldp:ascendingOrder;
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1243
   ldp:containerSortPredicate o:value.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1244
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1245
&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
  1246
   a o:NetWorth;
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1247
   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
  1248
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1249
&lt;a1&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1250
   a o:Stock;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1251
   o:value 100.00.
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1252
&lt;a2&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1253
   a o:Cash;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1254
   o:value 50.00.
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
  1255
&lt;a3&gt;
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1256
   a o:RealEstateHolding;
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1257
   o:value 300000.</pre>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1258
		<p>
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1259
			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
  1260
			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
  1261
			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
  1262
			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
  1263
			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
  1264
			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
  1265
			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
  1266
		</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1267
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1268
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
  1269
<section>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1270
<h2 id="ldpc-general">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
  1271
	<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
  1272
		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
  1273
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1274
	<div id="ldpc-5_2_1" class="rule">5.2.1 LDPC servers MUST also be conformant LDPR servers. A Linked Data Platform
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
  1275
		Container MUST also be a conformant Linked Data Platform Resource.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1276
	</div>
108
075acf700bb9 Updated wording for 5.2.2 from to be more clear
sspeiche
parents: 107
diff changeset
  1277
	<div id="ldpc-5_2_2" class="rule">5.2.2 For an LDPC,
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
  1278
	the same resource which is identified by its canonical URI, MAY be a member of 
108
075acf700bb9 Updated wording for 5.2.2 from to be more clear
sspeiche
parents: 107
diff changeset
  1279
	more than one LDPC.
85
612f57f3b28e Additional fix in 5.2.2 for ISSUE-34
sspeiche
parents: 84
diff changeset
  1280
	</div>
80
de9e15f7d9d5 Comments received from David Wood: 5.3.7 & 5.1.3 clarity, other minor edits (part 2)
sspeiche
parents: 79
diff changeset
  1281
	<div id="ldpc-5_2_3" class="rule">5.2.3 The state of an LDPC includes information about which
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
  1282
		resources are its members. In the simplest cases, the membership subject
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1283
		will be the LDPC resource itself, but it does not have to be. The
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1284
		membership predicate is also variable and will often be a predicate
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1285
		from the server application vocabulary. If there is no obvious
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1286
		predicate from the server application vocabulary to use, LDPC servers
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
  1287
		SHOULD use the <code>rdfs:member</code> predicate. Member resources can be
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
  1288
		any kind of resource identified by its URI, LDPR or otherwise.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1289
	</div>
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
  1290
	
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1291
	<div id="ldpc-5_2_4" class="rule">5.2.4 An LDPC MUST contain one triple 
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1292
		whose subject is the LDPC URI, 
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1293
		whose predicate is the <code>ldp:membershipSubject</code>, 
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1294
		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
  1295
	</div>
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
  1296
	
130
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1297
	<div id="ldpc-5_2_5" class="rule">5.2.5 An LDPC MUST contain one triple 
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1298
		whose subject is the LDPC URI, 
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1299
		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
  1300
		The object of the triple is constrained by other sections, such as
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1301
		<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>.
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1302
	</div>
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1303
	
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1304
	<div class="ldp-issue-pending">
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1305
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/75">ISSUE-75</a></div>
1e1f91d7effc issue-75 membershipXXX required
John Arwe
parents: 129
diff changeset
  1306
	non-monotonic ldp:membershipXXX relations.  Drafted per 2013-06-18 F2F resolution.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1307
	</div>
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
	
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1309
	<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
  1310
	of the LDPC and predicate of 
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1311
	<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
  1312
	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
  1313
	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
  1314
	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
  1315
	(<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
  1316
	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
  1317
	</div>
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
  1318
	
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1319
	<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
  1320
	of the LDPC and predicate of 
97
2299a3fa43b8 ISSUE-21 Continued refinement of text, removed subscripts
sspeiche
parents: 95
diff changeset
  1321
	<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
  1322
	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
  1323
	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
  1324
	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
  1325
	(<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
  1326
	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
  1327
	</div>
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
  1328
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1329
	<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
  1330
		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
  1331
		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
  1332
		representations). This allows a LDPC server to provide clients with
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1333
		information about the members without the client having to do a GET
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
  1334
		on each member individually.  See section <a href="#ldpc-member_data">5.1.1 Container
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1335
		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
  1336
    </div>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1337
		
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1338
	<div id="ldpc-5_2_7" class="rule">5.2.7 The representation of a LDPC MUST have <code>rdf:type</code>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1339
		of <code>ldp:Container</code>, but it MAY have additional
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1340
		<code>rdf:type</code>s.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1341
	</div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1342
	<div id="ldpc-5_2_8" class="rule">5.2.8 LDPCs 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
  1343
		<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
  1344
	</div>
116
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1345
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1346
	<div id="ldpc-5_2_9" class="rule">5.2.9 LDPC servers SHOULD NOT re-use URIs, 
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1347
		regardless of the mechanism by which members are created (POST, PUT, etc.).
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1348
		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
  1349
		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
  1350
		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
  1351
		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
  1352
	</div>
48fabccf847c Issue-35 resolution: do not re-use URIs on create
John Arwe
parents: 115
diff changeset
  1353
	
179
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1354
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1355
	<div id="ldpc-5_2_10" class="rule">5.2.10 Some LDPC's have membership object's that are not directly
181
1bd6eacbb5a6 ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
sspeiche
parents: 180
diff changeset
  1356
	    URIs minted upon LDPC member creation, for example URIs with non-empty fragment identifier [[RFC3986]]. 
1bd6eacbb5a6 ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
sspeiche
parents: 180
diff changeset
  1357
	    To determine which object URI to use for the  membership triple, LDPC's MUST contain triple whose
1bd6eacbb5a6 ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
sspeiche
parents: 180
diff changeset
  1358
	    subject is the LDPC URI, predicate is <code>ldp:membershipObject</code>, with an object <var>MO</var>. 
1bd6eacbb5a6 ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
sspeiche
parents: 180
diff changeset
  1359
	    Where <var>MO</var> and the HTTP URI <var>R</var> from POST create (as found in HTTP response <code>Location</code> header) can be 
1bd6eacbb5a6 ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
sspeiche
parents: 180
diff changeset
  1360
	    used to locate a triple of the form: <var>(R, MO, N)</var> and 
179
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1361
	    where <var>N</var> can be used to construct the membership triple of the form: <var>(membership subject, membership predicate, N)</var>.
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1362
	    When <code>ldp:membershipPredicateInverse</code> is used instead of <code>ldp:membershipPredicate</code>, the membership triple MUST be
181
1bd6eacbb5a6 ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
sspeiche
parents: 180
diff changeset
  1363
	    of the form: <var>(N, membership predicate, membership subject)</var>. To indicate that the member resource URI is the membership object
1bd6eacbb5a6 ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
sspeiche
parents: 180
diff changeset
  1364
	    (the default or typical case), the object MUST be set to predefined URI <code>ldp:MemberSubject</code> such that it forms the triple: 
1bd6eacbb5a6 ISSUE-72 take 2 - added ldp:MemberSubject to handle default case
sspeiche
parents: 180
diff changeset
  1365
	    <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
  1366
	</div>
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1367
	<div class="ldp-issue-pending">
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1368
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/72">ISSUE-72</a></div>
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1369
	edited in ldp:membershipObject in new previous section
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1370
	</div>	
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
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1373
	<!-- 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
  1374
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1375
	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
  1376
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1377
	<> foaf:primaryTopic <#this> .
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1378
	<#this> 
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1379
	  a animal:Cat; 
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1380
	  foaf:name "Zaza".
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1381
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1382
	... 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
  1383
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1384
	</people/roger> pets:has_pet </people/roger/zaza>.
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1385
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1386
	but the desired one is:
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1387
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1388
	</people/roger> pets:has_pet </people/roger/zaza#this>.
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1389
		
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1390
	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
  1391
	
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1392
	pets:has_pet 
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1393
	   a ldp:Container;
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1394
	   ldp:membershipPredicate pets:has_pet;
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1395
	   ldp:membershipSubject </people/roger>;
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1396
	   ldp:membershipObject foaf:primaryTopic .
9d563e756b28 ISSUE-72 adding 5.2.10 for ldp:membershipObject
sspeiche
parents: 176
diff changeset
  1397
	 -->
176
60b0a09af2c4 Just a sample for respec bug, will remove
sspeiche
parents: 175
diff changeset
  1398
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1399
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1400
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1401
<section>	
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1402
<h2 id="ldpc-HTTP_GET">HTTP GET</h2>
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1403
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1404
	<div id="ldpc-5_3_1" class="rule">5.3.1 The representation of a LDPC MUST contain a set of triples with a
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1405
		consistent subject and predicate whose objects indicate members of
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1406
		the container. The subject of the triples MAY be the container itself
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
  1407
		or MAY be another resource (as in the <a href="#ldpc-ex-membership-subj">example</a>).  See also
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1408
		<a href="#ldpc-5_2_3">5.2.3</a>.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1409
	</div>
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1410
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1411
	<div id="ldpc-5_3_2" class="rule">5.3.2  Empty after resolution of Issue-64,
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
  1412
		left here for now to avoid renumbering all that follows.  Content moved to <a href="#ldpc-HTTP_HEAD">LDPC HEAD</a>.
102
04e3e77e4e78 Added open issues 50, 51, 55, 56, 57, 58, 59
Ashok Malhotra <Ashok.Malhotra@Oracle.com>
parents: 99
diff changeset
  1413
	</div>
04e3e77e4e78 Added open issues 50, 51, 55, 56, 57, 58, 59
Ashok Malhotra <Ashok.Malhotra@Oracle.com>
parents: 99
diff changeset
  1414
	
114
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
  1415
	<div id="ldpc-5_3_3" class="rule">5.3.3 Empty after resolution of Issue-65, 
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
  1416
		left here for now to avoid renumbering all that follows.
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
  1417
		Used to be <blockquote><strike>
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
  1418
		An LDPC server that does not support a request to retrieve the first
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
  1419
		page resource representation from a known LDPC whose URL is “<code>&lt;containerURL&gt;</code>” by using
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
  1420
		the Request-URI “<code>&lt;containerURL&gt;?firstPage</code>”, MUST return a HTTP status code 404 (Not
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1421
		Found).
80
de9e15f7d9d5 Comments received from David Wood: 5.3.7 & 5.1.3 clarity, other minor edits (part 2)
sspeiche
parents: 79
diff changeset
  1422
		An LDPC server that supports that request using a different Request-URI than “<code>&lt;containerURL&gt;?firstPage</code>”,
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
  1423
		MUST return a HTTP Redirection 3xx status code such as 301 (Moved Permanently) or 302 (Found).
114
1629ff899e0e Issue-65 remove firstPage
John Arwe
parents: 113
diff changeset
  1424
		</strike></blockquote>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1425
	</div>
105
6f2f1329086d Removed closed issues 5, 7, 55 and 38 as the don't require edits. Added 64 and 65.
sspeiche
parents: 104
diff changeset
  1426
	
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
  1427
	<div id="ldpc-5_3_4" class="rule">5.3.4 <strike>LDPC servers SHOULD allow clients to retrieve large LDPCs in
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
  1428
		pages.</strike> Moved to section 4</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
  1429
	<div id="ldpc-5_3_5" class="rule">5.3.5 <strike>LDPC servers MAY split the response representation of any LDPC</strike> moved to section 4</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
  1430
	<div id="ldpc-5_3_6" class="rule">5.3.6 <strike>LDPC servers that support paging MUST include in the page</strike> moved to section 4</div>
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
  1431
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1432
	
124
6f1d7304f03f create different styles to differentiate issues based on their status: open, pending, closed
Arnaud Le Hors <lehors@us.ibm.com>
parents: 122
diff changeset
  1433
	<div class="ldp-issue-closed">
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1434
	<div class="ldp-issue-title"><a href="http://www.w3.org/2012/ldp/track/issues/18">ISSUE-18</a></div>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1435
	container membership and robust pagination
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1436
	</div>	
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1437
	
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1438
	<div id="ldpc-5_3_7" class="rule">5.3.7 LDPC servers MAY represent the members of a paged LDPC in a sequential
126
e4ae46fd5294 Issue-14 Resolution: ascending or descending sort, with optional collations
John Arwe
parents: 125
diff changeset
  1439
		order.  If the server does so, it MUST be specify the order using a triple