ldp.html
author John Arwe
Mon, 28 Jul 2014 12:17:48 -0400
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parent 720 d189b4e804e2
child 740 54e52a288bef
permissions -rw-r--r--
Clarified syntax used by clients to request specific interaction model, in response to cody's on-list question
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<!DOCTYPE html>
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<!-- 
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	TODO: Search for them within this document.
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	TODO: Once companion documents (best practices, primer) have URLs, link to them.  Search on "companion".
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	TODO: Add new "discovery of server capabilities" non-norm section
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    TODO: Consider adding Venn diagram for differences of LDPCs
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 -->
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<html>
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  <head>
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    <title>Linked Data Platform 1.0</title>
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    <meta http-equiv='Content-Type' content='text/html;charset=utf-8'/>
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        <!-- Test coverage: The following allows the spec to be annotated with information
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         from the test suite to help with understanding the coverage of each requirement. -->
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    <link rel="stylesheet" type="text/css" media="all" href="coverage.css">
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    <style type="text/css" media="print">
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        .coverage {
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            page-break-inside: avoid;
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        }
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    </style>
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    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
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    <script src="coverage.js"></script>
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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. ED, WD, LC, NOTE, etc.). If in doubt use ED.
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          specStatus:           "CR",
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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:  "2014-06-19",
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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:  "2014-03-11",
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          previousMaturity:  	"LC",
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          previousURI: 			"http://www.w3.org/TR/2014/WD-ldp-20140311/",
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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: "2014-04-02",
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          crEnd: "2014-07-17",
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          testSuiteURI: "https://dvcs.w3.org/hg/ldpwg/raw-file/tip/tests/ldp-testsuite.html",
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          implementationReportURI: "https://dvcs.w3.org/hg/ldpwg/raw-file/tip/tests/reports/ldp.html",
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          // Only include h1 and h2 level
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          maxTocLevel: 2,
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          // if you want to have extra CSS, append them to this list
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          // it is recommended that the respec.css stylesheet be kept
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          //extraCSS:             ["https://dvcs.w3.org/hg/ldpwg/css/respec.css"],
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          // editors, add as many as you like
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          // only "name" is required
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          editors:  [
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              { name: "Steve Speicher", url: "http://stevespeicher.blogspot.com",
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                company: "IBM Corporation", companyURL: "http://ibm.com/" },
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              { name: "John Arwe", url: "https://www.ibm.com/developerworks/mydeveloperworks/groups/service/html/allcommunities?userid=120000CAW7",
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                company: "IBM Corporation", companyURL: "http://ibm.com/" },
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			  {name: "Ashok Malhotra", url: "mailto:ashok.malhotra@oracle.com",
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			    company: "Oracle Corporation", companyURL: "http://www.oracle.com" },
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          ],
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          // authors, add as many as you like. 
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          // This is optional, uncomment if you have authors as well as editors.
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          // only "name" is required. Same format as editors.
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          //authors:  [
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          //    { name: "Your Name", url: "http://example.org/",
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          //      company: "Your Company", companyURL: "http://example.com/" },
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          //],
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          // name of the WG
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          wg:           "Linked Data Platform Working Group",
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          // URI of the public WG page
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          wgURI:        "http://www.w3.org/2012/ldp",
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          // name (without the @w3c.org) of the public mailing to which comments are due
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          wgPublicList: "public-ldp-comments",
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          // URI of the patent status for this WG, for Rec-track documents
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          // !!!! IMPORTANT !!!!
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          // This is important for Rec-track documents, do not copy a patent URI from a random
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          // document unless you know what you're doing. If in doubt ask your friendly neighbourhood
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          // Team Contact.
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          wgPatentURI:  "http://www.w3.org/2004/01/pp-impl/55082/status",
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          doRDFa: "1.1",
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			localBiblio:  {
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				"RFC7230": {
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					title:    "Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing"
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				,   href:     "http://tools.ietf.org/html/rfc7230"
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				,   authors:  [
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						"R. Fielding"
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					,   "J. Reschke"
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					]
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				,   status:   "Proposed Standard"
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				,   publisher:  "IETF"
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				},
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				"RFC7231": {
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					title:    "Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content"
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				,   href:     "http://tools.ietf.org/html/rfc7231"
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				,   authors:  [
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						"R. Fielding"
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					,   "J. Reschke"
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					]
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				,   status:   "Proposed Standard"
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				,   publisher:  "IETF"
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				},
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				"RFC7232": {
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					title:    "Hypertext Transfer Protocol (HTTP/1.1): Conditional Requests"
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				,   href:     "http://tools.ietf.org/html/rfc7232"
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				,   authors:  [
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						"R. Fielding"
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					,   "J. Reschke"
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					]
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				,   status:   "Proposed Standard"
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				,   publisher:  "IETF"
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				},
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				"RFC2817": {
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					title:    "Upgrading to TLS Within HTTP/1.1"
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				,   href:     "http://tools.ietf.org/html/rfc2817"
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				,   authors:  [
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						"R. Khare"
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					,   "S. Lawrence"
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					]
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				,   status:   "Proposed Standard"
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				,   publisher:  "IETF"
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				},
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				"RFC5005": {
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					title:    "Feed Paging and Archiving"
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				,   href:     "http://tools.ietf.org/html/rfc5005"
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				,   authors:  [
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						"M. Nottingham"
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					]
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				,   status:   "Proposed Standard"
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				,   publisher:  "IETF"
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				},
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				"LDP-PAGING": {
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					title:    "Linked Data Platform Paging"
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				,   href:     "https://dvcs.w3.org/hg/ldpwg/raw-file/default/ldp-paging.html"
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				,   authors:  [
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						"S. Speicher", "J. Arwe", "A. Malhotra"
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					]
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				,   status:   "Editor's Working Draft"
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				,   publisher:  "W3C"
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				},
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				"POWDER": {
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					title:    "Protocol for Web Description Resources (POWDER): Description Resources"
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				,   href:     "http://www.w3.org/TR/2009/REC-powder-dr-20090901/"
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				,   authors:  [
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						"Phil Archer", "Kevin Smith", "Andrea Perego"
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					]
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				,   status:   "W3C Recommendation"
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				,   publisher:  "W3C"
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				},
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				"RFC7240": {
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					title:    "Prefer Header for HTTP"
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				,   href:     "http://tools.ietf.org/html/rfc7240"
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				,   authors:  [
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						"J. Snell"
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					]
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				,   status:   "Proposed Standard"
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				,   publisher:  "IETF"
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				},
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				"Accept-Post": {
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					title:    "The Accept-Post HTTP Header"
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				,   href:     "http://tools.ietf.org/html/draft-wilde-accept-post"
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				,   authors:  [
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						"J. Arwe", "S. Speicher", "E. Wilde"
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					]
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				,   status:   "Internet Draft"
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				,   publisher:  "IETF"
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				},
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				"LDP-Tests": {
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					title:    "Linked Data Platform 1.0 Test Cases"
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				,   href:     "https://dvcs.w3.org/hg/ldpwg/raw-file/tip/tests/ldp-testsuite.html"
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				,   authors:  [
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						"R. Garcia-Castro", "F. Serena"
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					]
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				,   status:   "Editor's Draft of Working Group Note"
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				,   publisher:  "W3C"
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				},
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			},
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      };
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    </script>
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    <style type="text/css">
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    	div.rule {padding-top: 1em;}
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    	div.ldp-issue-open {
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	    	border-color: #E05252;
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			background: #FBE9E9;
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			padding: 0.5em;
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			margin: 1em 0;
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			position: relative;
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			clear: both;
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			border-left-width: .5em;
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			border-left-style: solid;
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    	}
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    	div.ldp-issue-pending {
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	    	border-color: #FAF602;
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			background: #F7F6BC;
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			padding: 0.5em;
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			margin: 1em 0;
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			position: relative;
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			clear: both;
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			border-left-width: .5em;
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			border-left-style: solid;
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    	}
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    	div.ldp-issue-closed {
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	    	border-color: #009900;
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			background: #BCF7CF;
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			padding: 0.5em;
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			margin: 1em 0;
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			position: relative;
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			clear: both;
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			border-left-width: .5em;
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			border-left-style: solid;
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    	}
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    	div.ldp-issue-title {
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    	    color: #E05252;
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    	    padding-right: 1em;
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            min-width: 7.5em;
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    	}
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		.atrisk {
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			padding:    1em;
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			margin: 1em 0em 0em;
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			border: 1px solid #f00;
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			background: #ffc;
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		}
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		.atrisktext {
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			/* content:    "Feature At Risk"; */
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			display:    block;
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			width:  150px;
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			margin: -1.5em 0 0.5em 0;
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			font-weight:    bold;
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			border: 1px solid #f00;
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			background: #fff;
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			padding:    3px 1em;
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		}
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		.normal { 
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			font-weight: normal;
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			font: normal 100% sans-serif;
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		}
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		.indented { 
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			margin-left: +3em;
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		}
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		tr:nth-of-type(odd),.oddrow { 
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			background:#F2F2F2; /* light grey, just enough to differentiate from white */
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		}
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		td { 
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			padding:0 +1ex 0 +1ex; /* add a bit of space from rule/edge to text */
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		}
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    </style>
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    <style type="text/css" media="all">
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    	code {
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    	    font-weight:bold;
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			font-size:larger;
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    	}
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		 /* ReSpec uses color ff4500 for code elements, which does not print well on some black & white printers
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		    and is a little hard to read for some folks even on-line. 
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			The default code font size was also somewhat too small/hard to read.
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		*/
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    </style>
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  </head>
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<body>
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<section id='abstract'>
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This document describes a set of best practices and simple approach for a read-write Linked Data architecture, based on
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HTTP access to web resources that describe their state using the <abbr title="Resource Description Framework">RDF</abbr>
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data model.
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</section>
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 <section id='sotd'>
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   <p>
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   	 This is the Candidate Recommendation document where the Working Group has addressed all
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   	 raised issues and seeks to gather implementation feedback.  For changes since last publication, see <a href="#history" class="sectionRef"></a>. 
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	 A test suite is available at [[LDP-Tests]].
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   </p>
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   <p>The following features are At Risk:</p>
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   <ol>
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   <li>The <a href="#header-accept-post">HTTP Accept-Post header</a>, 
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		that allows clients to determine which media types a server accepts on POST requests.
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	</li>
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   <li>The requirement that LDP clients be <a href="#atrisk-paging">paging-aware</a>.
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	</li>
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   </ol>
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 </section>
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<section class="informative" id="intro">
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<h1>Introduction</h1>
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	<p>This specification describes the use
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	of HTTP for accessing, updating, creating and deleting resources from
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	servers that expose their resources as Linked Data.  It provides clarifications
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	and extensions of the rules of Linked Data [[LINKED-DATA]]:</p>
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	<ol>
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		<li>Use URIs as names for things</li>
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		<li>Use HTTP URIs so that people can look up those names</li>
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		<li>When someone looks up a URI, provide useful information, using the standards
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			(RDF*, <abbr title="SPARQL Protocol and RDF Query Language">SPARQL</abbr>)
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		</li>
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		<li>Include links to other URIs, so that they can discover more things</li>
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	</ol>
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	<p>This specification discusses standard HTTP and RDF techniques  
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	used when constructing clients and servers that 
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	create, read, and write <a title="Linked Data Platform Resource">Linked Data Platform Resources</a>.
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	A companion document discusses best practices that you 
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	should use, and anti-patterns you should avoid, when constructing these clients and servers.
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	</p> 
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	<p>This specification defines a special type of <a>Linked Data Platform Resource</a>: a 
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	<a title="Linked Data Platform Container">Container</a>.  Containers are very useful 
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	in building application models involving collections of resources, often homogeneous ones. 
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	For example, universities offer a collection of classes 
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	and a collection of faculty members, each faculty member teaches a collection of courses, and so on. 
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	This specification discusses how to work with containers.  Resources can be added to containers  
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	using standard HTTP operations like 
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	POST (see <a href="#ldpc-HTTP_POST" class="sectionRef"></a>).</p>
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	<p>The intention of this specification is to enable additional rules and layered groupings of rules as 
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	additional specifications.  The scope is intentionally narrow to provide a set of key rules for 
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	reading and writing Linked Data that most, if not all, other specifications will depend upon and 
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	implementations will support.</p>
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	<p>This specification provides some approaches to deal with large resources.  An extension to this specification
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	provides the ability to break large resource representations into multiple paged responses [[LDP-PAGING]].</p>
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	<p>For context and background, it could be useful to read <a href="#bib-LDP-UCR">Linked Data Platform Use Case and Requirements</a> [[LDP-UCR]] 
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	and <a href="#base-specs" class="sectionRef"></a>.</p>
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</section>
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<section id="terms">
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<h1>Terminology</h1>
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<p>Terminology is based on W3C's Architecture of the World Wide Web [[!WEBARCH]] and 
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	Hyper-text Transfer Protocol ([[!RFC7230]], [[!RFC7231]], [[!RFC7232]]).
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</p>
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  <dl class="glossary">
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	<dt>Link</dt>
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	<dd>A relationship between two resources when one resource (representation) refers to the other resource by means
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		of a URI [[WEBARCH]].
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		<p></p></dd>
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	<dt>Linked Data</dt>
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	<dd>As defined by Tim Berners-Lee [[LINKED-DATA]].<p></p></dd>
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	<dt>Client</dt>
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	<dd>A program that establishes connections for the purpose of sending one or more HTTP requests [[!RFC7230]].<p></p></dd>
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	<dt>Server</dt>
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	<dd>A program that accepts connections in order to service HTTP requests by sending HTTP responses. 
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		<p>
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		The terms "client" and "server" refer only to the roles that these programs perform for a particular connection.  
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		The same program might act as a client on some connections and a server on others.
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		</p>
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		<p>
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		HTTP enables the use of intermediaries to satisfy requests through a
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		chain of connections.  There are three common forms of HTTP
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		intermediary: proxy, gateway, and tunnel.  In some cases, a single
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		intermediary might act as an origin server, proxy, gateway, or
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		tunnel, switching behavior based on the nature of each request.
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		[[!RFC7230]]. 
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		</p>
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	</dd>
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	<dt><dfn>Linked Data Platform Resource</dfn> (<abbr title="Linked Data Platform Resource">LDPR</abbr>)</dt>
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	<dd>A HTTP resource whose state is represented in any way that conforms to the simple lifecycle
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		patterns and conventions in <a href="#ldpr" class="sectionRef"></a>.<p></p></dd>
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	<dt><dfn>Linked Data Platform RDF Source</dfn> (<abbr title="Linked Data Platform RDF Source">LDP-RS</abbr>)</dt>
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	<dd>An <a title="Linked Data Platform Resource">LDPR</a> whose state is fully represented in RDF, corresponding to
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	an RDF graph. See also the term
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	<a href="http://www.w3.org/TR/rdf11-concepts/#dfn-rdf-source">RDF Source</a> from [[!rdf11-concepts]].
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	<p></p></dd>	
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	<dt><dfn>Linked Data Platform Non-RDF Source</dfn> (<abbr title="Linked Data Platform Non-RDF Source">LDP-NR</abbr>)</dt>
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	<dd>An <a title="Linked Data Platform Resource">LDPR</a> whose state is <em>not</em> represented in RDF.
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	For example, these can be binary or text documents that do not have useful RDF representations.
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	<p></p></dd>
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	<dt><dfn>Linked Data Platform Container</dfn> (<abbr title="Linked Data Platform Container">LDPC</abbr>)</dt>
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	<dd>A LDP-RS representing a collection of linked
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	documents (<a href="http://www.w3.org/TR/rdf11-concepts/#dfn-rdf-document">RDF Document</a> [[!rdf11-concepts]] or information resources [[!WEBARCH]])
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	that responds to client requests for creation, modification, and/or enumeration of its linked members and documents, 
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	and that conforms to the simple lifecycle
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	patterns and conventions in <a href="#ldpc" class="sectionRef"></a>.
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	<p></p></dd>
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	<dt><dfn>Linked Data Platform Basic Container</dfn> (<abbr title="Linked Data Platform Basic Container">LDP-BC</abbr>)</dt>
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	<dd>An <a title="Linked Data Platform Container">LDPC</a> that defines a simple link to
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	its <a title="Containment">contained</a> documents (information resources) [[!WEBARCH]].
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	<p></p></dd>
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	<dt><dfn>Linked Data Platform Direct Container</dfn> (<abbr title="Linked Data Platform Direct Container">LDP-DC</abbr>)</dt>
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	<dd>An <a title="Linked Data Platform Container">LDPC</a> that adds the concept of <a title="Membership">membership</a>, allowing the flexibility of choosing what form its 
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diff changeset
   409
	<a title="Membership triples">membership triples</a> take, and allows <a title="Membership">members</a> to be 
496
94420c5678ae Reference cleanup and tweak LDP-RS term
sspeiche
parents: 495
diff changeset
   410
	any resources [[!WEBARCH]], not only documents.
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   411
	<p></p></dd>
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   412
	
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   413
	<dt><dfn>Linked Data Platform Indirect Container</dfn> (<abbr title="Linked Data Platform Indirect Container">LDP-IC</abbr>)</dt>
548
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   414
	<dd>An <a title="Linked Data Platform Container">LDPC</a> similar to a <a title="Linked Data Platform Direct Container">LDP-DC</a>
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   415
	that is also capable of having <a title="Membership">members</a> whose URIs are based
461
64c0ca32c9e6 Cleanup from Action-123 add LDPR-RR and LDPR-BR
John Arwe
parents: 460
diff changeset
   416
	on the content of its <a title="Containment">contained</a> documents rather than the URIs assigned to those documents.
451
f68e4a59fba1 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 450
diff changeset
   417
	<p></p></dd>
491
16d872a712b6 Adopted container hierarchy and merged Indirect Container into Container
sspeiche
parents: 489
diff changeset
   418
		 
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   419
	<dt><dfn>Membership</dfn></dt>
601
5fc4b4b9efc2 LDP: RS>LDPC in membership definitions; paging: incorporate todo list in prolog and fix respec messages
John Arwe
parents: 600
diff changeset
   420
	<dd>The relationship linking an LDPC and its member LDPRs, 
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   421
	which can be different resources than its <a title="Containment">contained</a> documents.  
601
5fc4b4b9efc2 LDP: RS>LDPC in membership definitions; paging: incorporate todo list in prolog and fix respec messages
John Arwe
parents: 600
diff changeset
   422
	The LDPC often assists with managing the membership triples, whether or not the LDPC's
5fc4b4b9efc2 LDP: RS>LDPC in membership definitions; paging: incorporate todo list in prolog and fix respec messages
John Arwe
parents: 600
diff changeset
   423
	URI occurs in them.
5fc4b4b9efc2 LDP: RS>LDPC in membership definitions; paging: incorporate todo list in prolog and fix respec messages
John Arwe
parents: 600
diff changeset
   424
	<p></p></dd>
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
   425
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
   426
	<dt><dfn>Membership triples</dfn></dt>
601
5fc4b4b9efc2 LDP: RS>LDPC in membership definitions; paging: incorporate todo list in prolog and fix respec messages
John Arwe
parents: 600
diff changeset
   427
	<dd>A set of triples that lists an LDPC's members.
5fc4b4b9efc2 LDP: RS>LDPC in membership definitions; paging: incorporate todo list in prolog and fix respec messages
John Arwe
parents: 600
diff changeset
   428
		A LDPC's membership triples all have one of the following patterns:
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   429
		<table class="indented">
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   430
		<tr>
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   431
		<td style="background:#DDDDDD"> <var>membership-constant-URI</var> </td>
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   432
		<td style="background:#FFFFFF"> <var>membership-predicate</var> </td>
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   433
		<td style="background:#CCFFFF"> <var>member-derived-URI</var> </td>
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   434
		</tr>
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   435
		<tr>
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   436
		<td style="background:#CCFFFF"> <var>member-derived-URI</var> </td>
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   437
		<td style="background:#FFFFFF"> <var>membership-predicate</var> </td>
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   438
		<td style="background:#DDDDDD"> <var>membership-constant-URI</var> </td>
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   439
		</tr>
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   440
		</table>
415
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
   441
		The difference between the two is simply which position member-derived-URI occupies, which is usually
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   442
		driven by the choice of <var>membership-predicate</var>.  Most predicates have a natural forward direction
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   443
		inherent in their name, and existing vocabularies contain useful examples that read naturally in
453
a70c321daf12 ACTION-120 (Part 3) Added ldp:member
sspeiche
parents: 452
diff changeset
   444
		each direction.  <code>ldp:member</code> and <code>dcterms:isPartOf</code> are representative examples.
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   445
		<p>
503
d13ec755f468 Adjusted term membership triples and membership predicate
sspeiche
parents: 502
diff changeset
   446
		Each linked container exposes properties (see <a href="#ldpc-general" class="sectionRef"></a>)
415
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
   447
		that allow clients to determine which pattern it
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   448
		uses, what the actual <var>membership-predicate</var> and <var>membership-constant-URI</var> values are, 
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   449
		and (for containers that allow the creation of new members) what value is used
415
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
   450
		for the <var>member-derived-URI</var> based on the client's input to the 
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   451
		creation process.</p>
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
   452
	<p></p></dd>
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
   453
	
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
   454
	<dt><dfn>Membership predicate</dfn></dt>
601
5fc4b4b9efc2 LDP: RS>LDPC in membership definitions; paging: incorporate todo list in prolog and fix respec messages
John Arwe
parents: 600
diff changeset
   455
	<dd>The predicate of all an LDPC's <a title="Membership triples">membership triples</a>.
120
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
   456
	<p></p></dd>
edf269bcce8a Issue-64 change ?non-member-properties into Link header with extension relation type
John Arwe
parents: 116
diff changeset
   457
	
465
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   458
	<dt><dfn>Containment</dfn></dt>
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   459
	<dd>The relationship binding an LDPC to LDPRs whose lifecycle it controls and is aware of.  The
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   460
	lifecycle of the contained LDPR is limited by the lifecycle of the containing LDPC;
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   461
	that is, a contained LDPR cannot be created (through LDP-defined means) before its containing LDPC exists.
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   462
	<p></p></dd>
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   463
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   464
	<dt><dfn>Containment triples</dfn></dt>
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   465
	<dd>
561
ceeb37eb8f71 Clarify definitions of membership and containment triples to address Martin Nally comment
John Arwe
parents: 559
diff changeset
   466
	A set of triples, maintained by the LDPC, that lists documents created by the LDPC but not yet deleted.
465
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   467
	These triples <strong>always</strong> have the form: <var>( LDPC URI, ldp:contains , document-URI )</var>.
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   468
	<p></p></dd>
26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
John Arwe
parents: 464
diff changeset
   469
554
5a4fe2b38a2a rename empty container triples to minimal container triples
John Arwe
parents: 553
diff changeset
   470
	<dt><dfn>Minimal-container triples</dfn></dt>
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
   471
	<dd>
601
5fc4b4b9efc2 LDP: RS>LDPC in membership definitions; paging: incorporate todo list in prolog and fix respec messages
John Arwe
parents: 600
diff changeset
   472
	The portion of an LDPC's triples that would be present when the container is empty.  Currently, this definition
561
ceeb37eb8f71 Clarify definitions of membership and containment triples to address Martin Nally comment
John Arwe
parents: 559
diff changeset
   473
	is equivalent to all the LDPC's triples minus its containment triples, 
ceeb37eb8f71 Clarify definitions of membership and containment triples to address Martin Nally comment
John Arwe
parents: 559
diff changeset
   474
	and minus its membership triples (if either are considered part of its state), 
ceeb37eb8f71 Clarify definitions of membership and containment triples to address Martin Nally comment
John Arwe
parents: 559
diff changeset
   475
	but if future versions of LDP define additional classes of triples then this definition
474
a074b88f9b68 ACTION-132: Use Prefer in place of non-member properties resource
John Arwe
parents: 473
diff changeset
   476
	would expand to subtract out those classes as well.
412
b5f309858d98 Resolve ACTION-113 Update spec to reflect 11/04 resolution to remove 303 and have client use first/next links to detect paging
John Arwe
parents: 410
diff changeset
   477
	<p></p></dd>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   478
  </dl>
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
   479
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   480
<section id="conventions">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   481
<h2>Conventions Used in This Document</h2>
512
28fb37e65361 Added namespace definition
sspeiche
parents: 511
diff changeset
   482
	<p>The namespace for LDP is <code>http://www.w3.org/ns/ldp#</code>.</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   483
	<p>Sample resource representations are provided in <code>text/turtle</code>
495
559a77692da5 Fixed up some specref references
sspeiche
parents: 494
diff changeset
   484
		format [[turtle]].</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   485
	<p>Commonly used namespace prefixes:</p>
93
598be81efe5f Expanded on wording for 4.3 to be more consistent
sspeiche
parents: 92
diff changeset
   486
	<pre style="word-wrap: break-word; white-space: pre-wrap;">	@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
522
b3fd53a7b048 Prepare for LC2
sspeiche
parents: 521
diff changeset
   487
	@prefix foaf:    &lt;http://xmlns.com/foaf/0.1/&gt;.
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   488
	@prefix rdf:     &lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;.
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   489
	@prefix ldp:     &lt;http://www.w3.org/ns/ldp#&gt;.
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
   490
	@prefix xsd:     &lt;http://www.w3.org/2001/XMLSchema#&gt;.</pre>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   491
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   492
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   493
    
71
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   494
<section id='conformance'>
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   495
72
73a5766e4794 ISSUE-29 - Use relative URIs in examples
sspeiche
parents: 71
diff changeset
   496
<p>The status of the sections of Linked Data Platform 1.0 (this document) is as follows:</p>
71
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   497
<ul>
463
ae72388dbb82 start action-127 paging use of [23]xx response code; also changed 'informative' to 'non-normative' so sandro is happy[ier]
John Arwe
parents: 462
diff changeset
   498
  <li>1. Introduction: <b>non-normative</b></li>
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   499
  <li>2. Terminology: <b>normative</b></li>
71
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   500
  <li>3. Conformance: <b>normative</b></li>
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   501
  <li>4. Linked Data Platform Resources: <b>normative</b></li>
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   502
  <li>5. Linked Data Platform Containers: <b>normative</b></li>
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   503
  <li>6. Notable information from normative references: <b>non-normative</b></li>
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   504
  <li>7. HTTP Header Definitions: <b>normative</b></li>
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   505
  <li>8. Security Considerations: <b>non-normative</b></li>
463
ae72388dbb82 start action-127 paging use of [23]xx response code; also changed 'informative' to 'non-normative' so sandro is happy[ier]
John Arwe
parents: 462
diff changeset
   506
  <li>A. Acknowledgements: <b>non-normative</b></li> 
525
238e04f1e4f1 LC prep, custom SOTD and history sections
sspeiche
parents: 522
diff changeset
   507
  <li>B. Change History: <b>non-normative</b></li>
238e04f1e4f1 LC prep, custom SOTD and history sections
sspeiche
parents: 522
diff changeset
   508
  <li>C.1 Normative references: <b>normative</b></li>
238e04f1e4f1 LC prep, custom SOTD and history sections
sspeiche
parents: 522
diff changeset
   509
  <li>C.2 Non-normative references: <b>non-normative</b></li>
71
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   510
</ul>
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   511
636
46b0ed651256 updated to use RFC numbers newly assigned to http-bis and prefer header
John Arwe
parents: 634
diff changeset
   512
<p>A conforming <b><dfn>LDP client</dfn></b> is a conforming HTTP client [[!RFC7230]] that follows the rules defined by LDP in
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   513
<a href="#ldpr" class="sectionRef"></a> and also
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   514
<a href="#ldpc" class="sectionRef"></a>.
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   515
</p>
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   516
636
46b0ed651256 updated to use RFC numbers newly assigned to http-bis and prefer header
John Arwe
parents: 634
diff changeset
   517
<p>A conforming <b><dfn>LDP server</dfn></b> is a conforming HTTP server [[!RFC7230]] that follows the rules defined by LDP in 
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   518
<a href="#ldpr" class="sectionRef"></a> when it is serving LDPRs, and also
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   519
<a href="#ldpc" class="sectionRef"></a> when it is serving LDPCs.
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   520
LDP does not constrain its behavior when serving other HTTP resources.
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   521
</p>
71
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   522
</section>
5a2794d3ab13 ISSUE-31 Added a more complete conformance section, motived by SPARQL 1.1
sspeiche
parents: 69
diff changeset
   523
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   524
<section id="ldpr">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   525
<h1>Linked Data Platform Resources</h1>
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   526
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   527
<section class="informative" id="ldpr-informative">
466
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
   528
<h2>Introduction</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
   529
	<p>Linked Data Platform Resources (<dfn><abbr title="Linked Data Platform Resources">LDPRs</abbr></dfn>) are HTTP resources
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   530
		that conform to the simple patterns and conventions in this section.
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   531
		HTTP requests to access, modify, create or delete LDPRs are accepted
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   532
		and processed by <a title="LDP server">LDP servers</a>. Most LDPRs are domain-specific resources
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   533
		that contain data for an entity in some domain, which could be
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   534
		commercial, governmental, scientific, religious, or other.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   535
	<p>Some of the rules defined in this document provide
33
3c8c101f3f97 2012-12-28 - Fixed Typos. Separated some compound rules like 4.1.5. Rewording for clarity: 4.1.10,
John Arwe <johnarwe@us.ibm.com>
parents: 21
diff changeset
   536
		clarification and refinement of the base Linked Data rules [[LINKED-DATA]];
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   537
		others address additional needs.</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   538
	<p>The rules for Linked Data Platform Resources address basic
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   539
		questions such as:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   540
	<ul>
231
38d1a7faf1c4 Various editorial comments from PA
sspeiche
parents: 230
diff changeset
   541
		<li>What resource representations should be used?</li>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   542
		<li>How is optimistic collision detection handled for updates?</li>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   543
		<li>What should client expectations be for changes to linked-to resources,
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   544
				such as type changes?</li>
547
d34ef0884d9e Fixed LC-2840 clarity on burden of constraint
sspeiche
parents: 542
diff changeset
   545
		<li>How can the server make it easy for the client to create resources?</li>
464
77fd28c9eb94 action-127 use tag [23]xx status code for paging; also change paging to be for LDP-RRs as a consequence of issue-89 vocab changes
John Arwe
parents: 463
diff changeset
   546
		<li>How	do I GET the representation of a large resource broken up into pages?</li>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   547
	</ul>
463
ae72388dbb82 start action-127 paging use of [23]xx response code; also changed 'informative' to 'non-normative' so sandro is happy[ier]
John Arwe
parents: 462
diff changeset
   548
	<p>Additional non-normative guidance is available in the <a
439
28beff0a4f89 Updated reference to LDP BPG editor's draft and added ref to LDP-UCR
sspeiche
parents: 438
diff changeset
   549
			href="https://dvcs.w3.org/hg/ldpwg/raw-file/default/ldp-bp/ldp-bp.html"
28beff0a4f89 Updated reference to LDP BPG editor's draft and added ref to LDP-UCR
sspeiche
parents: 438
diff changeset
   550
			class="external"
28beff0a4f89 Updated reference to LDP BPG editor's draft and added ref to LDP-UCR
sspeiche
parents: 438
diff changeset
   551
			title="LDP Best Practices and Guidelines"
28beff0a4f89 Updated reference to LDP BPG editor's draft and added ref to LDP-UCR
sspeiche
parents: 438
diff changeset
   552
			rel="nofollow">LDP Best Practices and Guidelines editor's draft</a> that addresses
37
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   553
		questions such as:</p>
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   554
	<ul>
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   555
		<li>What literal value types should be used?</li>
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   556
		<li>Are there some typical vocabularies that should be reused?</li>
3e92cccfe6a3 edits to 4., 4.1.2, 4.1.6, http method support (aside from GET on LDPRs, and HEAD, HTTP governs), 5.2.1 clarify, 5.3.2/5.3.3 allow 3xx
John Arwe <johnarwe@us.ibm.com>
parents: 33
diff changeset
   557
	</ul>
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   558
	<p>The following sections define the conformance rules for LDP servers when serving LDPRs.
497
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   559
	Companion non-normative documents describe additional guidelines for use when interacting with LDPRs. 
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   560
	</p>
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   561
	<p>LDP-RS's representations may be too big, one strategy is to break up the response representation
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   562
	into client consumable chunks called pages. A separate LDP specification outlines the conformance
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   563
	rules around pagination [[LDP-PAGING]].
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   564
	</p>
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   565
	<p>A LDP server can manage two kinds of <a title="Linked Data Platform Resources">LDPRs</a>, those resources whose state 
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   566
	is represented using RDF (LDP-RS) and those using other formats (LDP-NR).  LDP-RSs have the unique
461
64c0ca32c9e6 Cleanup from Action-123 add LDPR-RR and LDPR-BR
John Arwe
parents: 460
diff changeset
   567
	quality that their representation is based on RDF, which addresses a number of use cases from web metadata, open data 
496
94420c5678ae Reference cleanup and tweak LDP-RS term
sspeiche
parents: 495
diff changeset
   568
	models, machine processable information, and automated processing by software agents [[!rdf11-concepts]].  LDP-NRs are almost anything
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   569
	on the Web today: images, HTML pages, word processing documents, spreadsheets, etc. and LDP-RSs hold 
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   570
	metadata associated with LDP-NRs in some cases.
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   571
	</p>
451
f68e4a59fba1 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 450
diff changeset
   572
    <figure id="fig-ldpr-types">
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   573
        <img src="images/ldpr1.png" alt="Sample separation of Linked Data Platform Resource" />
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   574
        <figcaption>Samples of different types of LDPRs</figcaption>
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   575
    </figure>
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   576
    <p>The LDP-NRs and LDP-RSs are simply sub-types of LDPRs, as illustrated in <a href="#fig-ldpr-class"></a>.</p>  
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   577
    <figure id="fig-ldpr-class">
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   578
       <img src="images/ldpr2.png" alt="Class Diagram of Linked Data Platform Resource" />
491
16d872a712b6 Adopted container hierarchy and merged Indirect Container into Container
sspeiche
parents: 489
diff changeset
   579
       <figcaption>Class relationship of types of Linked Data Platform Resources</figcaption>
448
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   580
     </figure>
72e366f1195f ACTION-123 Added concepts of LDP-RDF-Resource and LDP-Binary-Resource
sspeiche
parents: 447
diff changeset
   581
	
222
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   582
</section>
1db581afd1ec Added informative section 4.1 , therefore shifting all sections by one 4.1->4.2, etc
sspeiche
parents: 221
diff changeset
   583
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   584
<section id="ldpr-resource">
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   585
<h2>Resource</h2>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   586
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   587
<section id="ldpr-general">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   588
<h2>General</h2>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   589
		
637
87b108186dd5 clean up lingering 2616 references, adjust accept-post BNF for bis changes
John Arwe
parents: 636
diff changeset
   590
	<section id="ldpr-gen-http"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST at least be HTTP/1.1 conformant servers [[!RFC7230]].
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   591
	</h2></section><!-- Was 4.2.1 / #ldpr-4_2_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   592
	
548
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   593
	<section id="ldpr-gen-binary"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY host a mixture of <a title="Linked Data Platform RDF Source">LDP-RSs</a>
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   594
	and <a title="Linked Data Platform Non-RDF Source">LDP-NRs</a>. For example, it
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   595
		is common for <a title="LDP server">LDP servers</a> to need to host binary or text resources
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   596
		that do not have useful RDF representations.</h2></section><!-- Was 4.2.3 / #ldpr-4_2_3 -->
69
0f9825dea52b Updating some simple formatting, reorganizing open issues and todos
sspeiche
parents: 68
diff changeset
   597
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   598
	<section id="ldpr-gen-etags"><h2 class="normal"><a title="LDP server">LDP server</a> responses MUST use entity tags (either 
579
fc520a8e75eb Clarify MUST etags on responses with representations and HEAD
sspeiche
parents: 566
diff changeset
   599
		weak or strong ones) as response <code>ETag</code> header values, for responses that contain resource representations or
580
d17c3d23800e Clarify MUST etags on responses with representations and HEAD
sspeiche
parents: 579
diff changeset
   600
		successful responses to HTTP <code>HEAD</code> requests.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   601
	</h2></section><!-- Was 4.2.8 / #ldpr-4_2_8 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   602
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   603
	<section id="ldpr-gen-linktypehdr"><h2 class="normal"><a title="LDP server">LDP servers</a>
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   604
		exposing LDPRs 
149
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   605
		MUST advertise their LDP support by exposing a HTTP <code>Link</code> header
454
4a28a15ee8fd ACTION-120 (complete) Updated LDPC general, GET and POST sections
sspeiche
parents: 453
diff changeset
   606
		with a target URI of <code>http://www.w3.org/ns/ldp#Resource</code>, and
402
935e1e08d2bb Fix some typos around paging, move to single quotes for link relations per 5988
John Arwe
parents: 395
diff changeset
   607
		a link relation type of <code>type</code> (that is, <code>rel='type'</code>)
149
3f5f825f1155 issue-57 How can a client determine that it is in communication with an LDP server?
John Arwe
parents: 134
diff changeset
   608
		in all responses to requests made 
600
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   609
		to an LDPR's HTTP <code>Request-URI</code> [[!RFC5988]]. 
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   610
	</h2></section><!-- Was 4.2.10 / #ldpr-4_2_10 -->
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   611
	<blockquote>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   612
		<p>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   613
		Note: 
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   614
		The HTTP <code>Link</code> header is the method by which servers assert their support for the LDP specification 
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   615
		on a specific resource in a way that clients can inspect dynamically at run-time.   
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   616
		This is <strong>not</strong> equivalent to the
489
a33c03215d88 Adopted new resource types: LDP RDF Source (LDP-RS) (was LDP RDF Resource) and LDP Non-RDF Source (LDP-NR) (was LDP Binary Resource)
sspeiche
parents: 488
diff changeset
   617
		presence of a <var>(subject-URI, <code>rdf:type</code>, <code>ldp:Resource</code>)</var> triple in an LDP-RS.
600
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   618
		The presence of the header asserts that the server complies with the LDP specification's constraints on 
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   619
		HTTP interactions with LDPRs, that is
600
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   620
		it asserts that the resource <a href="#ldpr-gen-etags">has Etags</a>, <a href="#ldpr-options-must">supports OPTIONS</a>, and so on,
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   621
		which is not true of all Web resources.
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   622
		</p>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   623
		<p>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   624
		Note: 
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   625
		<a href="#ldpr-gen-binary">A LDP server can host a mixture of LDP-RSs and LDP-NRs</a>, and therefore there is no implication
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   626
		that LDP support advertised on one HTTP <code>Request-URI</code> means that other 
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   627
		resources on the same server are also LDPRs.  Each HTTP <code>Request-URI</code> needs to be 
434
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   628
		individually inspected, in the absence of outside information.
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   629
		</p>
83b656184387 Action-122 close ISSUE-91, by adding that for an LDPC the link header is type=LDPC
John Arwe
parents: 433
diff changeset
   630
	</blockquote>
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   631
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   632
	<section id="ldpr-gen-defbaseuri"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST assign the default 
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   633
		base-URI for [[!RFC3987]] relative-URI resolution to be the HTTP 
224
39ca65760446 Removed 5.4.8.1 and added 4.2.12 to better handle base/rel URI
sspeiche
parents: 223
diff changeset
   634
		<code>Request-URI</code> when the resource already exists, and to the URI of the created resource when the request results 
39ca65760446 Removed 5.4.8.1 and added 4.2.12 to better handle base/rel URI
sspeiche
parents: 223
diff changeset
   635
		in the creation of a new resource.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   636
	</h2></section><!-- Was 4.2.12 / #ldpr-4_2_12 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   637
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   638
	<section id="ldpr-gen-pubclireqs"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST 
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   639
		publish any constraints on <a title="LDP client">LDP clients’</a> ability to 
402
935e1e08d2bb Fix some typos around paging, move to single quotes for link relations per 5988
John Arwe
parents: 395
diff changeset
   640
		create or update LDPRs, by adding a Link header with <code>rel='describedby'</code> 
504
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
   641
		[[!RFC5988]] to all responses to requests which fail due to violation of 
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   642
		those constraints.  For example, a server that refuses resource creation 
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   643
		requests via HTTP PUT, POST, or PATCH would return this <code>Link</code> header on its 
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   644
		4xx responses to such requests.
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   645
		The same <code>Link</code> header MAY be provided on other responses.  LDP neither 
504
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
   646
		defines nor constrains the representation of the link's target resource.  Natural language 
065e49b91d0b Corrected rel=meta to be rel=describedBy
sspeiche
parents: 503
diff changeset
   647
		constraint documents are therefore permitted, 
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   648
		although machine-readable ones facilitate better client interactions.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   649
	</h2></section><!-- Was 4.2.13 / #ldpr-4_2_13 -->
152
938e7d21cc10 issue-78 inferencing levels add 4.1.13
John Arwe
parents: 151
diff changeset
   650
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   651
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   652
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   653
<section id="ldpr-HTTP_GET">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   654
<h2>HTTP GET</h2>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   655
	<section id="ldpr-get-must"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST support the HTTP <code>GET</code> Method for LDPRs.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   656
	</h2></section><!-- Was 4.3.1 / #ldpr-4_3_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   657
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   658
	<section id="ldpr-get-options"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST support the HTTP response headers defined in 
228
ec118c66c122 Moved 4.7.2 (from HEAD) to 4.3.2 (GET), shifted rest of GET section by one
sspeiche
parents: 227
diff changeset
   659
		<a href="#ldpr-HTTP_OPTIONS" class="sectionRef"></a>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   660
	</h2></section><!-- Was 4.3.2 / #ldpr-4_3_2 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   661
	
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   662
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   663
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   664
<section id="ldpr-HTTP_POST">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   665
<h2>HTTP POST</h2>
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   666
	<p>
636
46b0ed651256 updated to use RFC numbers newly assigned to http-bis and prefer header
John Arwe
parents: 634
diff changeset
   667
		Per [[!RFC7231]], this HTTP method is optional and 
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   668
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   669
		When a LDP server supports this method, 
485
195cdbad4852 Updated LDPR Post reference to Put, which had implied that clients could PUT (to an LDPC) to create an LDPR
John Arwe
parents: 484
diff changeset
   670
		this specification imposes no new requirements for LDPRs.
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   671
	</p>
479
c116a0ec33d8 Resolved a few editoral TODO's
John Arwe
parents: 477
diff changeset
   672
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   673
	<p>Clients can create LDPRs via <code>POST</code> (<a href="#ldpc-HTTP_POST" class="sectionRef"></a>) to a LDPC, 
485
195cdbad4852 Updated LDPR Post reference to Put, which had implied that clients could PUT (to an LDPC) to create an LDPR
John Arwe
parents: 484
diff changeset
   674
		via <code>PUT</code> (<a href="#ldpr-HTTP_PUT" class="sectionRef"></a>), or any other methods allowed
195cdbad4852 Updated LDPR Post reference to Put, which had implied that clients could PUT (to an LDPC) to create an LDPR
John Arwe
parents: 484
diff changeset
   675
		for HTTP resources.  Any server-imposed constraints on LDPR creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   676
		<a href="#ldpr-gen-pubclireqs">must be advertised</a> to clients.
480
96f2d9c4a742 Updated LDPC DELETE language and cleanup todos
sspeiche
parents: 479
diff changeset
   677
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   678
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   679
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   680
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   681
<section id="ldpr-HTTP_PUT">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   682
<h2>HTTP PUT</h2>
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   683
	<p>
636
46b0ed651256 updated to use RFC numbers newly assigned to http-bis and prefer header
John Arwe
parents: 634
diff changeset
   684
		Per [[!RFC7231]], this HTTP method is optional and 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   685
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   686
		When a LDP server supports this method, 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   687
		this specification imposes the following new requirements for LDPRs.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   688
	</p>
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   689
		
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   690
	<p>
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   691
		Any server-imposed constraints on LDPR creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   692
		<a href="#ldpr-gen-pubclireqs">must be advertised</a> to clients.
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   693
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   694
		
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   695
	<section id="ldpr-put-replaceall"><h2 class="normal">If a HTTP <code>PUT</code> is accepted on an existing resource, 
389
f1dbb042137b Resolve ACTION-109 Update spec to reflect 10/21 resolution for ignoring triples on PUT
John Arwe
parents: 388
diff changeset
   696
		<a title="LDP server">LDP servers</a> MUST
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   697
		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
   698
		the entity representation in the body of the request. 
600
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   699
		<a title="LDP server">LDP servers</a> MAY ignore server-managed properties such as <code>dcterms:modified</code> 
61
2f8a2d58e65c ISSUE-11 - 4.4.1 Relaxed the MUST ignore dc:modified/creator to MAY
sspeiche
parents: 60
diff changeset
   700
		and <code>dcterms:creator</code> if they are not under
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   701
		client control. Any <a title="LDP server">LDP servers</a> that wish
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   702
		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
   703
		with existing state stored on the server for a resource MUST use HTTP
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   704
		<code>PATCH</code>, not HTTP <code>PUT</code>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   705
	</h2></section><!-- Was 4.5.1 / #ldpr-4_5_1 -->
519
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   706
		
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   707
	<section id="ldpr-put-simpleupdate"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD allow clients to update resources without
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   708
		requiring detailed knowledge of server-specific constraints.  
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   709
		This is a consequence of the requirement to enable simple creation and modification of LDPRs.
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   710
	</h2></section><!-- Was 4.5.7 / #ldpr-4_5_7 -->	
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   711
519
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   712
	<section id="ldprs-put-servermanagedprops"><h2 class="normal">
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   713
		If an otherwise valid HTTP <code>PUT</code> request is received 
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   714
		that attempts to change properties the server does not allow clients to modify, 
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   715
		<a title="LDP server">LDP servers</a> MUST 
600
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   716
		fail the request by responding with a 4xx range status code (typically
519
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   717
		409 Conflict). 
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   718
		<a title="LDP server">LDP servers</a> SHOULD provide a corresponding response body containing
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   719
		information about which properties could not be
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   720
		persisted.
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   721
		The format of the 4xx response body is not constrained by LDP.
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   722
	</h2></section><!-- Was 4.5.1.1 / #ldpr-4_5_1_1 -->
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   723
	<blockquote>
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   724
		Non-normative note: Clients might provide properties equivalent to those already in the resource's state,
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   725
		e.g. as part of a GET/update representation/PUT sequence, and those PUT requests are intended to work as long as the 
600
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   726
		server-managed properties 
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   727
		are identical on the GET response and the subsequent PUT request.
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   728
		This is in contrast to other cases like write-once properties that the server does not allow clients to modify once set; 
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   729
		write-once properties are under client control, they are not <a href="#ldpr-put-replaceall">server-managed</a>.
519
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   730
	</blockquote>
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   731
	
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   732
	<section id="ldprs-put-failed"><h2 class="normal">
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   733
		If an otherwise valid HTTP <code>PUT</code> request is received that contains properties the server 
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   734
		chooses not to persist, e.g. unknown content,
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   735
		<a title="LDP server">LDP servers</a> MUST respond with an appropriate 4xx range status code
636
46b0ed651256 updated to use RFC numbers newly assigned to http-bis and prefer header
John Arwe
parents: 634
diff changeset
   736
		[[!RFC7231]].  
519
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   737
		<a title="LDP server">LDP servers</a> SHOULD provide a corresponding response body containing
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   738
		information about which properties could not be
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   739
		persisted.
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   740
		The format of the 4xx response body is not constrained by LDP. LDP servers
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   741
		expose these application-specific constraints as described in <a href="#ldpr-general" class="sectionRef"></a>.
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   742
	</h2></section><!-- Was 4.5.4 / #ldpr-4_5_4 -->
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   743
	
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   744
	<section id="ldpr-put-precond"><h2 class="normal"><a title="LDP client">LDP clients</a> SHOULD use the HTTP <code>If-Match</code>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   745
		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
   746
		modifying a resource that has changed since the client last retrieved
372
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   747
		its representation. <a title="LDP server">LDP servers</a> SHOULD require the HTTP <code>If-Match</code> header and HTTP <code>ETags</code>
d85ca5c8cb68 Preparing for profiles - conformance section updates; add link to IETF draft
John Arwe
parents: 370
diff changeset
   748
		to detect collisions. <a title="LDP server">LDP servers</a> MUST respond with status code 412
122
14197f56039e Issue-74 resolution - 428 precondition required
John Arwe
parents: 120
diff changeset
   749
		(Condition Failed) if <code>ETag</code>s fail to match when there are no other
636
46b0ed651256 updated to use RFC numbers newly assigned to http-bis and prefer header
John Arwe
parents: 634
diff changeset
   750
		errors with the request [[!RFC7232]].  <a title="LDP server">LDP servers</a> that require conditional requests MUST respond with status code 428
122
14197f56039e Issue-74 resolution - 428 precondition required
John Arwe
parents: 120
diff changeset
   751
		(Precondition Required) when the absence of a precondition is the only reason for rejecting the request [[!RFC6585]].
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   752
	</h2></section><!-- Was 4.5.2 / #ldpr-4_5_2 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   753
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   754
	<section id="ldpr-put-create"><h2 class="normal"><a title="LDP server">LDP servers</a> MAY choose to allow the creation of new resources using HTTP <code>PUT</code>.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   755
	</h2></section><!-- Was 4.5.6 / #ldpr-4_5_6 -->
519
0a61b68f0a67 Tweaked LDPR PUT clauses to better match new defn of LDPR
sspeiche
parents: 518
diff changeset
   756
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   757
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   758
		
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   759
<section id="ldpr-HTTP_DELETE">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   760
<h2>HTTP DELETE</h2>
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   761
	<p>
636
46b0ed651256 updated to use RFC numbers newly assigned to http-bis and prefer header
John Arwe
parents: 634
diff changeset
   762
		Per [[!RFC7231]], this HTTP method is optional and 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   763
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   764
		When a LDP server supports this method, 
548
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   765
		this specification imposes no new blanket requirements for LDPRs.
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   766
	</p>
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   767
		
548
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   768
	<p>Additional requirements on HTTP <code>DELETE</code> for LDPRs within containers can be found in
466
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
   769
	<a href="#ldpc-HTTP_DELETE" class="sectionRef"></a>.
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
   770
	</p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   771
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   772
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   773
<section id="ldpr-HTTP_HEAD">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   774
<h2>HTTP HEAD</h2>
515
9f5b3854a5bb Fixed a number of broken links
sspeiche
parents: 514
diff changeset
   775
	<p>Note that certain LDP mechanisms rely on HTTP headers, and HTTP generally requires that
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   776
		<code>HEAD</code> responses include the same headers as <code>GET</code> responses.  
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   777
		Thus, implementers should also carefully read sections <a href="#ldpr-HTTP_GET"></a> 
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   778
		and <a href="#ldpr-HTTP_OPTIONS"></a>.</p>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   779
	<section id="ldpr-head-must"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST support the HTTP <code>HEAD</code> method.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   780
	</h2></section><!-- Was 4.7.1 / #ldpr-4_7_1 -->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   781
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   782
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   783
<section id="ldpr-HTTP_PATCH">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   784
<h2>HTTP PATCH</h2>
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   785
	<p>
636
46b0ed651256 updated to use RFC numbers newly assigned to http-bis and prefer header
John Arwe
parents: 634
diff changeset
   786
		Per [[!RFC5789]], this HTTP method is optional and 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   787
		this specification does not require <a title="LDP server">LDP servers</a> to support it.
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   788
		When a LDP server supports this method, 
475
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   789
		this specification imposes the following new requirements for LDPRs.
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   790
	</p>
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   791
		
e36ed82a31a7 Put final stake in heart of 'informative' (waves to Sandro), update boilerplate for readability per Arnaud
John Arwe
parents: 474
diff changeset
   792
	<p>
393
8197019f4604 ACTION-110 Update spec to reflect 10/21 resolution for normative changes to align vanilla/chocolate
John Arwe
parents: 389
diff changeset
   793
		Any server-imposed constraints on LDPR creation or update  
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   794
		<a href="#ldpr-gen-pubclireqs">must be advertised</a> to clients.
500
c52f08081c8a Removed rule on PATCH create, as it doesn't add any substantive over RFC5789
sspeiche
parents: 498
diff changeset
   795
	</p>
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   796
	
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   797
	<section id="ldpr-patch-acceptpatch"><h2 class="normal"><a title="LDP server">LDP servers</a> that support <code>PATCH</code> MUST
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   798
		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
   799
		requests, listing patch document media type(s) supported by the server.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   800
	</h2></section><!-- Was 4.8.4 / #ldpr-4_8_4 -->
186
a3471f4667d8 Removed closed issues that required no new spec changes: 50, 56, 16, 19, 17
sspeiche
parents: 185
diff changeset
   801
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   802
</section>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   803
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   804
<section id="ldpr-HTTP_OPTIONS">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   805
<h2>HTTP OPTIONS</h2>
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   806
	<p>This specification imposes the following new requirements on HTTP <code>OPTIONS</code> for LDPRs 
637
87b108186dd5 clean up lingering 2616 references, adjust accept-post BNF for bis changes
John Arwe
parents: 636
diff changeset
   807
		beyond those in [[!RFC7231]].  Other sections of this specification, for example 
167
ae4592939639 issue-80 Add Accept-Post
John Arwe
parents: 158
diff changeset
   808
		<a href="#ldpr-HTTP_PATCH">PATCH</a>,
481
beb136ede044 Removed LDPR Paging HTTP OPTIONS section (no longer needed) and more cleanup of todos
sspeiche
parents: 480
diff changeset
   809
		<a href="#header-accept-post">Accept-Post</a>,
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   810
		add other requirements on <code>OPTIONS</code> responses.
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   811
		</p>
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   812
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   813
	<section id="ldpr-options-must"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST support the HTTP <code>OPTIONS</code> method.
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   814
	</h2></section><!-- Was 4.9.1 / #ldpr-4_9_1 -->
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   815
		
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   816
	<section id="ldpr-options-allow"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST indicate their support for HTTP Methods by
158
8af0b25f2748 issue-32 MUST support OPTIONS
John Arwe
parents: 152
diff changeset
   817
		responding to a HTTP <code>OPTIONS</code> request on the LDPR’s URL with the HTTP
192
221002315344 Removed 4.1.5 and various formatting issues
sspeiche
parents: 191
diff changeset
   818
		Method tokens in the HTTP response header <code>Allow</code>.
435
e9efbc3a3ba8 First attempt at correcting section ordering and anchors
sspeiche
parents: 434
diff changeset
   819
	</h2></section><!-- Was 4.9.2 / #ldpr-4_9_2 -->
134
917946ac571e ISSUE-33 Moved 5.1.3 Paging (LDPC) to 4.8 (LDPR)
sspeiche
parents: 130
diff changeset
   820
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   821
</section> <!-- h2 -->
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   822
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   823
</section> <!-- ldpr-resource -->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   824
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   825
<section id="ldprs">
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   826
<h2>RDF Source</h2>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   827
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   828
<p>The following section contains normative clauses for <a title="">Linked Data Platform RDF Source</a>.</p>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   829
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   830
<section id="ldprs-general">
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   831
<h2>General</h2>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   832
516
b46f235b5fcc Fixed biblio and dfn references
sspeiche
parents: 515
diff changeset
   833
	<section id="ldprs-are-ldpr"><h2 class="normal">Each <a title="Linked Data Platform RDF Source">LDP RDF Source</a> MUST also be 
548
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   834
		a conforming <a title="Linked Data Platform Resource">LDP Resource</a> as defined in <a href="#ldpr-resource" class="sectionRef"></a>, along with the
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   835
		restrictions in this section. <a title="">LDP client</a>s MAY infer the following triple: one
553
3d27d1a1d553 change subclassof to rdf:type for MAY inferred triples
John Arwe
parents: 552
diff changeset
   836
		whose subject is the <a title="Linked Data Platform RDF Source">LDP-RS</a>, 
3d27d1a1d553 change subclassof to rdf:type for MAY inferred triples
John Arwe
parents: 552
diff changeset
   837
		whose predicate is <code>rdf:type</code>, 
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   838
		and whose object is <code>ldp:Resource</code>, 
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   839
		but there is no requirement to materialize this triple in the LDP-RS representation.
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   840
	</h2></section>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   841
	
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   842
	<section id="ldprs-gen-atleast1rdftype"><h2 class="normal"><a title="Linked Data Platform RDF Source">LDP-RSs</a> representations SHOULD have at least one <code>rdf:type</code>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   843
		set explicitly.  This makes the representations much more useful to
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   844
		client applications that don’t support inferencing.
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   845
	</h2></section><!-- Was 4.2.5 / #ldpr-4_2_5 -->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   846
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   847
	<section id="ldprs-rdftype"><h2 class="normal">The representation of a LDP-RS MAY have an <code>rdf:type</code>
548
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   848
		of <code>ldp:RDFSource</code> for <a title="">Linked Data Platform RDF Source</a>.
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   849
	</h2></section><!-- Was 5.2.7 / #ldpc-5_2_7 -->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   850
		
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   851
	<section id="ldprs-gen-rdf"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST provide an RDF representation for <a title="Linked Data Platform RDF Source">LDP-RSs</a>. 
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   852
	The HTTP <code>Request-URI</code> of the LDP-RS is typically the subject of most triples in the response.
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   853
	</h2></section><!-- Was 4.2.2 / #ldpr-4_2_2 -->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   854
	
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   855
	<section id="ldprs-gen-reusevocab"><h2 class="normal"><a title="Linked Data Platform RDF Source">LDP-RSs</a> SHOULD reuse existing vocabularies instead of creating
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   856
		their own duplicate vocabulary terms.  In addition to this general rule, some specific cases are
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   857
		covered by other conformance rules.
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   858
	</h2></section><!-- Was 4.2.4 / #ldpr-4_2_4 -->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   859
	
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   860
	<section id="ldprs-gen-reusevocabsuchas"><h2 class="normal"><a title="Linked Data Platform RDF Source">LDP-RSs</a> predicates SHOULD use standard vocabularies such as Dublin Core
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   861
		[[!DC-TERMS]], RDF [[!rdf11-concepts]] and RDF Schema [[!rdf-schema]], whenever
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   862
		possible.
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   863
	</h2></section><!-- Was 4.2.4.1 / #ldpr-4_2_4_1 -->
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   864
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   865
	<section id="ldp-cli-multitype"><h2 class="normal">In the absence of special knowledge of the application or domain, 
548
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   866
		<a title="LDP client">LDP clients</a> MUST assume that any LDP-RS can have multiple <code>rdf:type</code> triples with different objects.
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   867
	</h2></section> <!-- Was 4.3.5 / #ldpr-4_3_5 -->
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   868
	
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   869
	<section id="ldpr-cli-typeschange"><h2 class="normal">In the absence of special knowledge of the application or domain, 
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   870
		<a title="LDP client">LDP clients</a> MUST assume that the <code>rdf:type</code> values
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   871
		of a given LDP-RS can change over time.
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   872
	</h2></section> <!-- Was 4.3.6 / #ldpr-4_3_6 -->
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   873
	
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   874
	<section id="ldpr-cli-openpreds"><h2 class="normal"><a title="LDP client">LDP clients</a> SHOULD always assume that the set of predicates for a
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   875
		LDP-RS of a particular type at an arbitrary server is open, in the
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   876
		sense that different resources of the same type may not all have the
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   877
		same set of predicates in their triples, and the set of predicates that
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   878
		are used in the state of any one LDP-RS is not limited to any pre-defined
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   879
		set.
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   880
	</h2></section> <!-- Was 4.5.3 / #ldpr-ldpr-4_5_3 -->
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   881
		
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   882
	<section id="ldprs-gen-noinferencing"><h2 class="normal"><a title="LDP server">LDP servers</a>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   883
		MUST NOT require LDP clients to implement inferencing in order to recognize the subset
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   884
		of content defined by LDP.  Other specifications built on top of LDP may require clients
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   885
		to implement inferencing [[!rdf11-concepts]].  The practical implication is that all content defined by LDP
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   886
		must be explicitly represented, unless noted otherwise within this document.
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   887
	</h2></section><!-- Was 4.2.11 / #ldpr-4_2_11 -->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   888
	
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   889
	<section id="ldpr-cli-preservetriples"><h2 class="normal">
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   890
		A <a title="LDP client">LDP client</a> MUST preserve all triples retrieved from a LDP-RS using HTTP <code>GET</code> that
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   891
		it doesn’t change whether it understands the predicates or not, when
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   892
		its intent is to perform an update using HTTP <code>PUT</code>.  The use of HTTP
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   893
		<code>PATCH</code> instead of HTTP <code>PUT</code> for update avoids this burden for clients
636
46b0ed651256 updated to use RFC numbers newly assigned to http-bis and prefer header
John Arwe
parents: 634
diff changeset
   894
		[[!RFC5789]].
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   895
	</h2></section> <!-- Was 4.5.5 / #ldpr-ldpr-4_5_5 -->
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   896
	
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   897
	<section id="ldpr-cli-can-hint"><h2 class="normal">
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   898
		<a title="LDP client">LDP clients</a> MAY 
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   899
		provide LDP-defined hints that allow servers to optimize the content of responses.
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   900
		<a href="#prefer-parameters" class="sectionRef"></a> defines hints that apply to 
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   901
		<a title="Linked Data Platform RDF Source">LDP-RSs</a>.
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   902
	</h2></section> 
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   903
	
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   904
	<section id="ldpr-cli-hints-ignorable"><h2 class="normal">
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   905
		<a title="LDP client">LDP clients</a> MUST 
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   906
		be capable of processing responses formed by a LDP server that ignores hints,
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   907
		including LDP-defined hints.
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   908
	</h2></section>
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   909
	
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   910
	<div class="atrisk" id="atrisk-paging"><p class="atrisktext">Feature At Risk</p>
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   911
	<p>The LDP Working Group proposes incorporation of the following clause to make LDP clients paging aware:</p>
527
b86124412c7a html5 validation fixes
sspeiche
parents: 525
diff changeset
   912
	<section id="ldpr-cli-paging"><h2 class="normal">
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   913
		<a title="LDP client">LDP clients</a> SHOULD 
552
4d99968383f2 editorial changes - "an" to "a" etc
John Arwe
parents: 551
diff changeset
   914
		be capable of processing successful HTTP <code>GET</code> responses formed by a LDP server
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   915
		that independently initiated paging, returning a page of representation instead of full resource
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   916
		representation [[!LDP-PAGING]].
527
b86124412c7a html5 validation fixes
sspeiche
parents: 525
diff changeset
   917
	</h2>
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   918
	</section> 
527
b86124412c7a html5 validation fixes
sspeiche
parents: 525
diff changeset
   919
	</div>
518
f64cf213ec81 Folded #ldpclients section into #ldprs
sspeiche
parents: 517
diff changeset
   920
	
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   921
</section> <!-- ldprs-general -->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   922
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   923
<section id="ldprs-HTTP_GET">
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   924
<h2>HTTP GET</h2>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   925
	<section id="ldprs-get-turtle"><h2 class="normal"><a title="LDP server">LDP servers</a> MUST provide a <code>text/turtle</code>
600
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   926
		representation of the requested <a title="Linked Data Platform RDF Source">LDP-RS</a> whenever HTTP content negotiation
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   927
		does not force another outcome [[!turtle]].  In other words, if the server receives a <code>GET</code> request whose <code>Request-URI</code>
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   928
		identifies a <a title="">LDP-RS</a>, and either <code>text/turtle</code> has the highest relative quality
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   929
		factor (<code>q=</code> value) in the 
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   930
		Accept request header or that header is absent, then an <a title="">LDP server</a> has to respond with Turtle.
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   931
	</h2></section><!-- Was 4.3.3 / #ldpr-4_3_3 -->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   932
600
67d13fb3a21f changes motivated by joe ross's comments
John Arwe
parents: 585
diff changeset
   933
	<section id="ldprs-get-jsonld"><h2 class="normal"><a title="LDP server">LDP servers</a> SHOULD offer a <code>application/ld+json</code>
565
76006e897d7f Servers should offer/accept JSON-LD representations of LDP-RSs
John Arwe
parents: 564
diff changeset
   934
		representation of the requested <a title="Linked Data Platform RDF Source">LDP-RS</a> [[!JSON-LD]].
76006e897d7f Servers should offer/accept JSON-LD representations of LDP-RSs
John Arwe
parents: 564
diff changeset
   935
	</h2></section><!-- new -->
76006e897d7f Servers should offer/accept JSON-LD representations of LDP-RSs
John Arwe
parents: 564
diff changeset
   936
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   937
</section> <!-- ldprs-HTTP_GET -->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   938
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   939
</section> <!-- ldprs RDF Source-->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   940
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   941
<section id="ldpnr">
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   942
<h2>Non-RDF Source</h2>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   943
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   944
<p>The following section contains normative clauses for <a title="">Linked Data Platform Non-RDF Source</a>.</p>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   945
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   946
<section id="ldpnr-general">
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   947
<h2>General</h2>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   948
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   949
	<section id="ldpnr-are-ldpr"><h2 class="normal">Each <a title="Linked Data Platform Non-RDF Source">LDP Non-RDF Source</a> MUST also be 
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   950
		a conforming <a title="Linked Data Platform Resource">LDP Resource</a> in <a href="#ldpr-resource" class="sectionRef"></a>.  
548
ab2a3418fb01 minor editorial fixes
John Arwe
parents: 547
diff changeset
   951
		<a title="Linked Data Platform Non-RDF Source">LDP Non-RDF Sources</a> may not be able to fully express their
583
196b408851fd Added usage for ldp:NonLDPSource
sspeiche
parents: 580
diff changeset
   952
		state using RDF [[rdf11-concepts]]. 
196b408851fd Added usage for ldp:NonLDPSource
sspeiche
parents: 580
diff changeset
   953
	</h2></section>
196b408851fd Added usage for ldp:NonLDPSource
sspeiche
parents: 580
diff changeset
   954
	
196b408851fd Added usage for ldp:NonLDPSource
sspeiche
parents: 580
diff changeset
   955
	<section id="ldpnr-type"><h2 class="normal"><a title="LDP server">LDP servers</a> exposing an <a title="Linked Data Platform Non-RDF Source">LDP Non-RDF Source</a> 
196b408851fd Added usage for ldp:NonLDPSource
sspeiche
parents: 580
diff changeset
   956
		MAY advertise this by exposing a HTTP <code>Link</code> header
196b408851fd Added usage for ldp:NonLDPSource
sspeiche
parents: 580
diff changeset
   957
		with a target URI of <code>http://www.w3.org/ns/ldp#NonRDFSource</code>, and
196b408851fd Added usage for ldp:NonLDPSource
sspeiche
parents: 580
diff changeset
   958
		a link relation type of <code>type</code> (that is, <code>rel='type'</code>)
196b408851fd Added usage for ldp:NonLDPSource
sspeiche
parents: 580
diff changeset
   959
		in responses to requests made 
196b408851fd Added usage for ldp:NonLDPSource
sspeiche
parents: 580
diff changeset
   960
		to the LDP-NR's HTTP <code>Request-URI</code> [[!RFC5988]].  
513
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   961
	</h2></section>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   962
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   963
</section> <!-- ldpnr Non-RDF Source-->
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   964
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   965
</section>
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   966
2df2933649d4 Split out different kinds of LDPRs into their own subsection
sspeiche
parents: 512
diff changeset
   967
</section> <!-- ldpr h1 -->
174
72ce83f4ec7f issue-58 actions 88,89 (new predicates)
John Arwe
parents: 173
diff changeset
   968
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   969
<section id="ldpc">
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   970
<h1>Linked Data Platform Containers</h1>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   971
333
3c2aaaea1f73 Fixed vanishing section ref problem
sspeiche
parents: 331
diff changeset
   972
<section class="informative" id="ldpc-informative">		
466
7b840138bdf1 editorial cleanup; substantive hits to ldpc delete, remove reqt for direct containers to materialize insertedContentRelation (since it's value is fixed)
John Arwe
parents: 465
diff changeset
   973
<h2>Introduction</h2>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   974
	<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
   975
		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
   976
		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
   977
		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
   978
		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
   979
		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
   980
		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
   981
		are:</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   982
	<ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   983
		<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
   984
		<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
   985
		<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
   986
		<li>How	can I ensure the resource data is easy to query?</li>
497
67f04abb73e6 Factored out paging and sorting into separate spec LDP-Paging
sspeiche
parents: 496
diff changeset
   987
		<li>How	is the order of the container entries expressed? [[LDP-PAGING]]</li>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   988
	</ol>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   989
	<p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   990
		This document defines the representation and behavior of containers
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   991
		that address these issues. There are multiple types of containers defined
509
3b515a98338d fixed typos, removed empty section, fixed mixed set of "an LDP" and "a LDP"
Arnaud Le Hors <lehors@us.ibm.com>
parents: 508
diff changeset
   992
		to support a variety of use cases, all that support a base set of capabilities.
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   993
		The contents of a container is
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
   994
		defined by a set of triples in its representation (and state) called
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   995
		the <a title="Containment triples">containment triples</a> that follow a fixed pattern.
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   996
		Additional types of containers allow for the set of members of a container to be
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
   997
		defined by a set of triples in its representation called
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   998
		the <a title="Membership triples">membership triples</a> that follow a consistent pattern
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
   999
		(see the linked-to definition for the possible patterns). 
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
  1000
		The membership triples of a container all
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
  1001
		have the same predicate, called the membership predicate, 
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
  1002
		and either the subject or the object is also a consistent value
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
  1003
		– the remaining position of the membership
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
  1004
		triples (the one that varies) define the members of the container. 
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
  1005
		In the simplest cases, the
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
  1006
		consistent value will be the LDPC resource's URI, but it does not
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1007
		have to be. The membership predicate is also variable and will often
453
a70c321daf12 ACTION-120 (Part 3) Added ldp:member
sspeiche
parents: 452
diff changeset
  1008
		be a predicate from the server application vocabulary or the <code>ldp:member</code> predicate.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1009
	</p>
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1010
	<p>This document includes a set of guidelines for
415
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
  1011
		creating new resources and adding them to the list of
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1012
		resources linked to a container. It goes on to explain how to learn about a set of related
415
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
  1013
		resources, regardless of how they were created or added to the container's membership.
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
  1014
		It also defines behavior when resources created using a container are later deleted;
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
  1015
		deleting containers removes membership information and
12864dde579d Resolve ACTION-112 Update spec to reflect 10/28 resolution for Issue-81 part 1: new predicate names
John Arwe
parents: 414
diff changeset
  1016
		possibly performs some cleanup tasks on unreferenced member resources.</p>
104
78fd14175304 ISSUE-59 5.3.2 limited rdf:type of ldp:Container, removed 5.6.3, reworded 5.6.2, updated 1.
sspeiche
parents: 102
diff changeset
  1017
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1018
	<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
  1019
		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
  1020
		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
  1021
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1022
<em>Request</em> to <code>http://example.org/c1/</code>:
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1023
<pre class="example" id="ldpc-ex-simple-req">GET /c1/ HTTP/1.1
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1024
Host: example.org
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1025
Accept: text/turtle</pre>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1026
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1027
<em>Response:</em>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1028
<pre class="example" id="ldpc-ex-simple">HTTP/1.1 200 OK
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1029
Content-Type: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1030
Date: Thu, 12 Jun 2014 18:26:59 GMT
653
71bc4ab13849 Fixed ETag headers to be strong and quoted
sspeiche
parents: 647
diff changeset
  1031
ETag: "8caab0784220148bfe98b738d5bb6d13"
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1032
Accept-Post: text/turtle, application/ld+json
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1033
Allow: POST,GET,OPTIONS,HEAD,PUT
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1034
Link: &lt;http://www.w3.org/ns/ldp#BasicContainer&gt;; rel="type",
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1035
      &lt;http://www.w3.org/ns/ldp#Resource&gt;; rel="type"
646
d97c97e51f86 Updated examples in Prefer section to be in request/response format
sspeiche
parents: 644
diff changeset
  1036
Transfer-Encoding: chunked
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1037
<!-- @base <http://example.org/c1/>. -->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1038
@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
  1039
@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
  1040
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1041
&lt;http://example.org/c1/&gt;
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1042
   a ldp:BasicContainer;
486
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
  1043
   dcterms:title "A very simple container";
974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
John Arwe
parents: 485
diff changeset
  1044
   ldp:contains &lt;r1&gt;, &lt;r2&gt;, &lt;r3&gt;.</pre>
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1045
 
522
b3fd53a7b048 Prepare for LC2
sspeiche
parents: 521
diff changeset
  1046
 <!-- TODO: consider if basic container diagram helps, if so...add for other cases too
449
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1047
   	<figure id="fig-ldpc-basic">
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1048
        <img src="images/ldpc-basic.png" alt="Sample Linked Data Platform Basic Container" />
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1049
        <figcaption>Sample of Linked Data Platform Basic Container</figcaption>
623bbfdea989 ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
sspeiche
parents: 448
diff changeset
  1050
    </figure>
522
b3fd53a7b048 Prepare for LC2
sspeiche
parents: 521
diff changeset
  1051
     -->
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1052
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1053
	<p>The preceding example is very straightforward: there are containment triples
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1054
	whose subject is the container, whose predicate is  
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1055
	<code>ldp:contains</code>, and whose objects are the URIs of the contained resources,
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1056
	and there is no distinction between member resources and contained resources. 
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1057
	A POST to this container will create a new resource
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1058
	and add it to the list of contained resources by adding a new containment triple
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1059
	to the container.  This type of container is called a
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1060
	<a title="">Linked Data Platform Basic Container</a>.  </p>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1061
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1062
	<p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1063
	Sometimes you have to build on existing models incrementally, so you have fewer degrees of
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1064
	freedom in the resource model.  In these situations, it can be useful to help clients map
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1065
	LDP patterns onto existing vocabularies, or to include members not created via the container; 
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1066
	<a title="Linked Data Platform Direct Container">LDP Direct Containers</a>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1067
	meet those kinds of needs.  Direct Containers allow membership triples to use a subject
373
0562f8c4d4d4 Cleanup of known cases where text assumed "normal" membership triple pattern, did not consider the flipped/MO cases
John Arwe
parents: 372
diff changeset
  1068
	other than the container itself as the consistent membership value, and/or to use
467
0eed67a3db4e Simplified some of the container examples
sspeiche
parents: 466
diff changeset
  1069
	a  predicate from an application's domain model as the membership predicate. Let's
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1070
	start with a pre-existing 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
  1071
			
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1072
<em>Request</em> to <code>http://example.org/netWorth/nw1</code>:
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1073
<pre class="example" id="ldpc-ex-membership-partial-req">GET /netWorth/nw1 HTTP/1.1
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1074
Host: example.org
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1075
Accept: text/turtle</pre>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1076
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1077
<em>Response:</em>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1078
<pre class="example" id="ldpc-ex-membership-partial">HTTP/1.1 200 OK
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1079
Content-Type: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1080
Date: Thu, 12 Jun 2014 18:26:59 GMT
653
71bc4ab13849 Fixed ETag headers to be strong and quoted
sspeiche
parents: 647
diff changeset
  1081
ETag: "0f6b5bd8dc1f754a1238a53b1da34f6b"
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1082
Link: &lt;http://www.w3.org/ns/ldp#RDFSource&gt;; rel="type",
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1083
      &lt;http://www.w3.org/ns/ldp#Resource&gt;; rel="type"
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1084
Allow: GET,OPTIONS,HEAD,PUT,DELETE
646
d97c97e51f86 Updated examples in Prefer section to be in request/response format
sspeiche
parents: 644
diff changeset
  1085
Transfer-Encoding: chunked
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1086
<!-- @base <http://example.org/netWorth/nw1>. -->
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1087
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1088
@prefix o: &lt;http://example.org/ontology#&gt;.
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1089
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1090
&lt;http://example.org/netWorth/nw1&gt;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1091
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1092
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1093
   o:asset 
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1094
      &lt;assets/a1&gt;,
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1095
      &lt;assets/a2&gt;;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1096
   o:liability 
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1097
      &lt;liabilities/l1&gt;,
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1098
      &lt;liabilities/l2&gt;,
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1099
      &lt;liabilities/l3&gt;.
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1100
</pre>
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1101
	<p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1102
	In the preceding example, there is a <code>rdf:type</code> of <code>o:NetWorth</code> indicating the
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1103
	resource represents an instance of a person's net worth and a <code>o:netWorthOf</code> predicate indicating 
566
cfc0c8b396a8 fix typos
John Arwe
parents: 565
diff changeset
  1104
	the associated person.  There are two sets of same-subject, same-predicate triples; one for assets and
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1105
	one for liabilities.  Existing domain-specific applications exist that depend on those types and 
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1106
	predicates, so changing them <em>incompatibly</em> would be frowned upon.
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1107
	</p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1108
	
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1109
	<p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1110
	It would be helpful to be able to use LDP patterns to manage the assets and liabilities-related triples.
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1111
	Doing so using a Basic Container would require duplicating much of the information with different types and
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1112
	predicates, which would be onerous for large resources.  <a title="Linked Data Platform Direct Container">Direct Containers</a>
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1113
	provide a middle ground, by giving LDP clients a way to map existing domain-specific resources to LDP's
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1114
	types and interaction models.  
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1115
	In this specific example, 
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1116
	it would be helpful to be able to manage the assets and liabilities triples consistently, for example
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1117
	by using LDP containers.
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1118
	One way to do this is to create two containers, one to manage assets and another liabilities, 
566
cfc0c8b396a8 fix typos
John Arwe
parents: 565
diff changeset
  1119
	as separate HTTP resources.  Existing clients have no need to interact with those containers,
cfc0c8b396a8 fix typos
John Arwe
parents: 565
diff changeset
  1120
	whereas LDP-enabled clients now have container URLs that they can interact with.  The existing
cfc0c8b396a8 fix typos
John Arwe
parents: 565
diff changeset
  1121
	resource remains unchanged so that existing clients continue to function normally.
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1122
	This is illustrated in the set of related examples, one example per HTTP resource, starting with
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1123
	the LDP-RS example from before:
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1124
	</p>
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1125
	
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1126
<em>Request</em> to <code>http://example.org/netWorth/nw1</code>:
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1127
<pre class="example" id="ldpc-ex-membership-full-req">GET /netWorth/nw1 HTTP/1.1
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1128
Host: example.org
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1129
Accept: text/turtle</pre>
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1130
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1131
<em>Response:</em>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1132
<pre class="example" id="ldpc-ex-membership-full">HTTP/1.1 200 OK
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1133
Content-Type: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1134
Date: Thu, 12 Jun 2014 18:26:59 GMT
653
71bc4ab13849 Fixed ETag headers to be strong and quoted
sspeiche
parents: 647
diff changeset
  1135
ETag: "0f6b5bd8dc1f754a1238a53b1da34f6b"
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1136
Link: &lt;http://www.w3.org/ns/ldp#RDFSource&gt;; rel="type",
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1137
      &lt;http://www.w3.org/ns/ldp#Resource&gt;; rel="type"
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1138
Allow: GET,OPTIONS,HEAD,PUT,DELETE
646
d97c97e51f86 Updated examples in Prefer section to be in request/response format
sspeiche
parents: 644
diff changeset
  1139
Transfer-Encoding: chunked
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1140
<!-- @base <http://example.org/netWorth/nw1>. -->
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1141
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1142
@prefix o: &lt;http://example.org/ontology#&gt;.
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1143
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1144
&lt;http://example.org/netWorth/nw1&gt;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1145
   a o:NetWorth;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1146
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1147
   o:asset 
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1148
      &lt;assets/a1&gt;,
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1149
      &lt;assets/a2&gt;;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1150
   o:liability 
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1151
      &lt;liabilities/l1&gt;,
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1152
      &lt;liabilities/l2&gt;,
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1153
      &lt;liabilities/l3&gt;.
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1154
</pre>
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1155
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1156
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1157
	<p>The structure of the net worth resource is completely unchanged, so any existing 
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1158
	domain-specific applications continue to work without impact.
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1159
	LDP clients, on the other hand, have no way to understand that the asset and
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1160
	liability triples correspond in any way to LDP containers.  For that, they need the
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1161
	next two resources.
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1162
	</p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1163
	<p>The first container is a <a title="Linked Data Platform Direct Container">LDP Direct Container</a> to manage assets.  
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1164
	Direct Containers add the concept of <a title="Membership">membership</a>
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1165
	and flexibility on how to specify the <a title="Membership triples">membership triples</a>.
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1166
	</p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1167
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1168
<em>Request</em> to <code>http://example.org/netWorth/nw1/assets/</code>:
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1169
<pre class="example" id="ldpc-ex-membership-subj-req">GET /netWorth/nw1/assets/ HTTP/1.1
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1170
Host: example.org
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1171
Accept: text/turtle</pre>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1172
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1173
<em>Response:</em>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1174
<pre class="example" id="ldpc-ex-membership-subj">HTTP/1.1 200 OK
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1175
Content-Type: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1176
Date: Thu, 12 Jun 2014 18:26:59 GMT
653
71bc4ab13849 Fixed ETag headers to be strong and quoted
sspeiche
parents: 647
diff changeset
  1177
ETag: "6df36eef2631a1795bfe9ab76760ea75"
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1178
Accept-Post: text/turtle, application/ld+json
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1179
Allow: POST,GET,OPTIONS,HEAD
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1180
Link: &lt;http://www.w3.org/ns/ldp#DirectContainer&gt;; rel="type",
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1181
      &lt;http://www.w3.org/ns/ldp#Resource&gt;; rel="type"
646
d97c97e51f86 Updated examples in Prefer section to be in request/response format
sspeiche
parents: 644
diff changeset
  1182
Transfer-Encoding: chunked
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1183
<!-- @base <http://example.org/netWorth/nw1/assets/>. -->      
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1184
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1185
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1186
@prefix o: &lt;http://example.org/ontology#&gt;.
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1187
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1188
&lt;http://example.org/netWorth/nw1/assets/&gt;
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1189
   a ldp:DirectContainer;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1190
   dcterms:title "The assets of JohnZSmith";
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1191
   ldp:membershipResource &lt;http://example.org/netWorth/nw1&gt;;
488
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
  1192
   ldp:hasMemberRelation o:asset;
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1193
   ldp:contains &lt;a1&gt;, &lt;a2&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1194
</pre>
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1195
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1196
	<p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1197
	In the preceding asset container, the consistent membership value 
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1198
	(<a title="Membership triples">membership-constant-URI</a>, still in the subject position) is not the
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1199
	container itself – it is the (separate) net worth resource. The
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1200
	membership predicate is <code>o:asset</code>,
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1201
	from the domain model. A POST of an asset representation to the asset container will create a new
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1202
	asset and add it to net-worth's list of	assets by adding a new membership triple
566
cfc0c8b396a8 fix typos
John Arwe
parents: 565
diff changeset
  1203
	to the resource and a containment triple to the container. 
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1204
	</p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1205
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1206
	<p>The second container is a <a title="Linked Data Platform Direct Container">LDP Direct Container</a> to manage liabilities.  
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1207
	</p>
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1208
<em>Request</em> to <code>http://example.org/netWorth/nw1/liabilities/</code>:
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1209
<pre class="example" id="ldpc-ex-membership-full-liabcont-req">GET /netWorth/nw1/liabilities/ HTTP/1.1
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1210
Host: example.org
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1211
Accept: text/turtle</pre>
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1212
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1213
<em>Response:</em>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1214
<pre class="example" id="ldpc-ex-membership-full-liabcont">HTTP/1.1 200 OK
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1215
Content-Type: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1216
Date: Thu, 12 Jun 2014 18:26:59 GMT
653
71bc4ab13849 Fixed ETag headers to be strong and quoted
sspeiche
parents: 647
diff changeset
  1217
ETag: "9f50da01f792281ddcfebe9788372d07"
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1218
Link: &lt;http://www.w3.org/ns/ldp#DirectContainer&gt;; rel="type",
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1219
      &lt;http://www.w3.org/ns/ldp#Resource&gt;; rel="type"
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1220
Accept-Post: text/turtle, application/ld+json
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1221
Allow: POST,GET,OPTIONS,HEAD
646
d97c97e51f86 Updated examples in Prefer section to be in request/response format
sspeiche
parents: 644
diff changeset
  1222
Transfer-Encoding: chunked
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1223
<!-- @base <http://example.org/netWorth/nw1/liabilities/>. -->
456
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1224
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
6130538abdf0 ACTION-124 LDPR-RR as named graphs
sspeiche
parents: 454
diff changeset
  1225
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1226
@prefix o: &lt;http://example.org/ontology#&gt;.
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1227
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1228
&lt;http://example.org/netWorth/nw1/liabilities/&gt;
506
c828dbebaebb Split out different kinds of LDPCs into their own subsection
sspeiche
parents: 505
diff changeset
  1229
   a ldp:DirectContainer;
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1230
   dcterms:title "The liabilities of JohnZSmith";
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1231
   ldp:membershipResource &lt;http://example.org/netWorth/nw1&gt;;
488
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
sspeiche
parents: 487
diff changeset
  1232
   ldp:hasMemberRelation o:liability;
460
1f6e06fd7272 typo: added missing brackets in example 7
Arnaud Le Hors <lehors@us.ibm.com>
parents: 459
diff changeset
  1233
   ldp:contains &lt;l1&gt;, &lt;l2&gt;, &lt;l3&gt;.
87
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1234
</pre>
671fe85a872b Inserted examples 2&3, a more complete NetWorth resource
sspeiche
parents: 86
diff changeset
  1235
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1236
	<p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1237
	The preceding liability container is completely analogous to the asset container above, simply
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1238
	managing liabilities instead of assets and using the <code>o:liability</code> predicate.
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1239
	</p>
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1240
	<p>
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1241
	To add a another liability, a client would POST something like this to the liability container:
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1242
	</p>
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1243
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1244
<em>Request</em> to <code>http://example.org/netWorth/nw1/liabilities/</code>:
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1245
<pre class="example" id="ldpc-ex-membership-add-new-liability-req">POST /netWorth/nw1/liabilities/ HTTP/1.1
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1246
Host: example.org
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1247
Accept: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1248
Content-Type: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1249
Content-Length: 63
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1250
<!-- @base is here only so it's easier to paste into validators for checking -->
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1251
@prefix o: &lt;http://example.org/ontology#&gt;.
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1252
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1253
&lt;&gt;
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1254
   a o:Liability.
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1255
   # plus any other properties that the domain says liabilities have
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1256
</pre>
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1257
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1258
<em>Response:</em>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1259
<pre class="example" id="ldpc-ex-membership-add-new-liability">HTTP/1.1 201 Created
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1260
Location: http://example.org/netWorth/nw1/liabilities/l4
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1261
Date: Thu, 12 Jun 2014 19:56:13 GMT
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1262
Link: &lt;http://www.w3.org/ns/ldp#DirectContainer&gt;; rel="type",
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1263
      &lt;http://www.w3.org/ns/ldp#Resource&gt;; rel="type"
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1264
</pre>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1265
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1266
	<p>
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1267
	Assuming the server successfully processes this request and assigns the URI
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1268
	<code>&lt;http://example.org/netWorth/nw1/liabilities/l4&gt;</code> to the 
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1269
	newly created liability resource, at least two new triples would be added.
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1270
	</p>
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1271
	<ol>
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1272
	<li>In the net worth resource, <code>&lt;http://example.org/netWorth/nw1&gt; o:liability &lt;liabilities/l4&gt;</code></li>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1273
	<li>In the liability container, <code>&lt;http://example.org/netWorth/nw1/liabilities/&gt; ldp:contains &lt;l4&gt;</code>.</li>
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1274
	</ol>
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1275
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1276
	<p>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1277
	You might wonder why we chose to create two new containers instead of making
566
cfc0c8b396a8 fix typos
John Arwe
parents: 565
diff changeset
  1278
	<code>http://example.org/netWorth/nw1</code> itself a container.
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1279
	A single net worth container would be a fine design if <code>http://example.org/netWorth/nw1</code>
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1280
	had only assets or only liabilities (basically: only a single predicate to manage), 
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1281
	but since it has separate predicates for assets and liabilities an ambiguity arises:
566
cfc0c8b396a8 fix typos
John Arwe
parents: 565
diff changeset
  1282
	it is unspecified whether a client's creation request (POST)
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1283
	should add a new <code>o:asset</code> or <code>o:liability</code> triple. 
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1284
	Having separate <code>http://example.org/netWorth/nw1/assets/</code> 
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1285
	and <code>http://example.org/netWorth/nw1/liabilities/</code> containers
566
cfc0c8b396a8 fix typos
John Arwe
parents: 565
diff changeset
  1286
	allows both assets and liabilities to be created 
cfc0c8b396a8 fix typos
John Arwe
parents: 565
diff changeset
  1287
	and linked to the net-worth resource using the appropriate predicate.  Similar ambiguities arise
564
cba76c3813b9 More example revisions, and fix bug in advisors example
John Arwe
parents: 563
diff changeset
  1288
	if the client wishes to list the members and/or contained resources.
12
a3be44430b37 ISSUE-8 rename from LDBP to LDP and add remainder of open issues
sspeiche
parents:
diff changeset
  1289
	</p>
563
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1290
4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
John Arwe
parents: 562
diff changeset
  1291
	<p>Continuing in the multiple containers direction, we will now extend our net worth example to add a container for
452
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1292
	advisors (people) that have managed the assets and liabilities.  We have decided
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
sspeiche
parents: 451
diff changeset
  1293
	to identify these advisors with URLs that contain a fragment (hash) to represent
462
3a7f9b05bad8 proofing through 454
John Arwe
parents: 461
diff changeset
  1294
	these real-world resources, not the documents that describe them.</p>
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1295
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1296
<em>Request</em> to <code>http://example.org/netWorth/nw1</code>:
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1297
<pre class="example" id="ldpc-ex-membership-full-elab-req">GET /netWorth/nw1 HTTP/1.1
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1298
Host: example.org
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1299
Accept: text/turtle</pre>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1300
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1301
<em>Response:</em>
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1302
<pre class="example" id="ldpc-ex-membership-full-elab">HTTP/1.1 200 OK
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1303
Content-Type: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1304
Date: Thu, 12 Jun 2014 18:26:59 GMT
653
71bc4ab13849 Fixed ETag headers to be strong and quoted
sspeiche
parents: 647
diff changeset
  1305
ETag: "e8d129f45ca31848fb56213844a32b49"
644
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1306
Link: &lt;http://www.w3.org/ns/ldp#DirectContainer&gt;; rel="type",
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1307
      &lt;http://www.w3.org/ns/ldp#Resource&gt;; rel="type"
afe041e0f7fc Updated examples in container sections to be in request/response format
sspeiche
parents: 637
diff changeset
  1308
Allow: GET,OPTIONS,HEAD,PUT,DELETE
646
d97c97e51f86 Updated examples in Prefer section to be in request/response format
sspeiche
parents: 644
diff changeset
  1309
Transfer-Encoding: chunked
644
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1310
<!-- @base <http://example.org/netWorth/nw1>. -->
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c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1311
@prefix ldp: &lt;http://www.w3.org/ns/ldp#&gt;.
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1312
@prefix dcterms: &lt;http://purl.org/dc/terms/&gt;.
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974b4886835b change all unicode 00A0 (non-breaking space) to blank (0020)
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  1313
@prefix foaf: &lt;http://xmlns.com/foaf/0.1/&gt;.
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afe041e0f7fc Updated examples in container sections to be in request/response format
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  1314
@prefix o: &lt;http://example.org/ontology#&gt;.
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1315
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1316
&lt;http://example.org/netWorth/nw1&gt;
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c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1317
   a o:NetWorth;
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1318
   o:netWorthOf &lt;http://example.org/users/JohnZSmith&gt;;
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1319
   o:advisor
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cfc0c8b396a8 fix typos
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  1320
   	 &lt;advisors/bob#me&gt;,     # URI of a person
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cba76c3813b9 More example revisions, and fix bug in advisors example
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  1321
   	 &lt;advisors/marsha#me&gt;.
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c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1322
   	 
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cba76c3813b9 More example revisions, and fix bug in advisors example
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  1323
&lt;advisors/&gt;
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c828dbebaebb Split out different kinds of LDPCs into their own subsection
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  1324
   a ldp:IndirectContainer;
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26eb1d6d4fd6 fixing things found proofing SS updates and a few of Arnaud's email comments
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  1325
   dcterms:title "The asset advisors of JohnZSmith";
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6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
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  1326
   ldp:membershipResource &lt;&gt;;
6bc3c9a2b2f7 Adopted new predicate names: ldp:membershipResource, ldp:hasMemberRelation and ldp:isMemberOfRelation
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  1327
   ldp:hasMemberRelation o:advisor;
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c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1328
   ldp:insertedContentRelation foaf:primaryTopic;
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1329
   ldp:contains
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  1330
   	 &lt;bob&gt;,     # URI of a document a.k.a. an information resource
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  1331
   	 &lt;marsha&gt;.  # describing a person
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c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1332
</pre>	
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  1333
	
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1334
	<p>To handle this type of indirection, the triple with predicate of <code>ldp:insertedContentRelation</code> and object of 
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f960af656afb Simplified some of the container examples
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  1335
	<code>foaf:primaryTopic</code> informs clients that when POSTing to this container, they need to include a triple of the
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3a7f9b05bad8 proofing through 454
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  1336
	form <code>(&lt;&gt;, foaf:primaryTopic, topic-URI)</code> to inform the server which URI to use 
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  1337
	(<code>topic-URI</code>) in the new membership triple.</p>
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  1338
	
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4e61db8dbfa2 Update narrative on net worth example (#s 2-5, section 5.1, at time of writing)
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  1339
	<p>This type of container is referred to as a <a title="Linked Data Platform Indirect Container">LDP Indirect Container</a>. 
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7e329a35960e A vs an fun
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  1340
	It is similar to an <a title="Linked Data Platform Direct Container">LDP Direct Container</a> 
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  1341
	but it provides an indirection to add (via a create request) as a member any resource, 
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  1342
	including a URI representing a real-world object.  Create requests to 
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  1343
	<a title="Linked Data Platform Direct Container">LDP Direct Containers</a> 
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  1344
	can only add information resources [[WEBARCH]] - the documents they create - as members.
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  1345
	</p>
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  1346
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  1347
	<p>
cba76c3813b9 More example revisions, and fix bug in advisors example
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  1348
	To add a another advisor, a client would POST something like this to the advisors container:
cba76c3813b9 More example revisions, and fix bug in advisors example
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  1349
	</p>
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afe041e0f7fc Updated examples in container sections to be in request/response format
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  1350
<em>Request</em> to <code>http://example.org/netWorth/nw1/advisors/</code>:
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775deb8e635f CR prep, fixing pubrules checker problems
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  1351
<pre class="example" id="ldpc-ex-membership-add-new-advisor-req">POST /netWorth/nw1/advisors/ HTTP/1.1
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  1352
Host: example.org
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1353
Accept: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1354
Content-Type: text/turtle
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1355
Slug: george
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1356
Content-Length: 72
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1357
<!-- @base <http://example.org/netWorth/nw1/advisors/george>. -->
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  1358
@prefix foaf: &lt;http://xmlns.com/foaf/0.1/&gt;.
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afe041e0f7fc Updated examples in container sections to be in request/response format
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  1359
@prefix o: &lt;http://example.org/ontology#&gt;.
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cba76c3813b9 More example revisions, and fix bug in advisors example
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  1360
&lt;&gt;
cba76c3813b9 More example revisions, and fix bug in advisors example
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  1361
   a o:Advisor;
cba76c3813b9 More example revisions, and fix bug in advisors example
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  1362
   foaf:primaryTopic &lt;#me&gt;.
cba76c3813b9 More example revisions, and fix bug in advisors example
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  1363
   # plus any other properties that the domain says advisors have
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  1364
</pre>
cba76c3813b9 More example revisions, and fix bug in advisors example
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  1365
644
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1366
<em>Response:</em>
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1367
<pre class="example" id="ldpc-ex-membership-add-new-advisor">HTTP/1.1 201 Created
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1368
Location: http://example.org/netWorth/nw1/advisors/george
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1369
Date: Thu, 12 Jun 2014 19:56:13 GMT
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1370
Link: &lt;http://www.w3.org/ns/ldp#RDFSource&gt;; rel="type",
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1371
      &lt;http://www.w3.org/ns/ldp#Resource&gt;; rel="type"
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1372
</pre>
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1373
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  1374
	<p>
cba76c3813b9 More example revisions, and fix bug in advisors example
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  1375
	Assuming the server successfully processes this request and assigns the URI
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  1376
	<code>&lt;http://example.org/netWorth/nw1/advisors/george&gt;</code> to the 
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  1377
	newly created advisor resource, at least two new triples would be added.
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  1378
	</p>
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  1379
	<ol>
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afe041e0f7fc Updated examples in container sections to be in request/response format
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  1380
	<li>In the net worth resource, <code>&lt;http://example.org/netWorth/nw1&gt; o:advisor &lt;advisors/george#me&gt;</code></li>
afe041e0f7fc Updated examples in container sections to be in request/response format
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  1381
	<li>In the advisors container, <code>&lt;http://example.org/netWorth/nw1/advisors/&gt; ldp:contains &lt;george&gt;</code></li>
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  1382
	</ol>
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  1383
cba76c3813b9 More example revisions, and fix bug in advisors example
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  1384
	<p>In summary, <a href="#fig-ldpc-types"></a> illustrates the LDP-defined container types: Basic, Direct, and Indirect, along
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16d872a712b6 Adopted container hierarchy and merged Indirect Container into Container
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  1385
	with their class relationship to types of LDPRs.</p>
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  1386
	
e8d84dbc86dc ACTION-120 (Part 1) Added concepts of containers (basic, direct and indirect)
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  1387
	 <figure id="fig-ldpc-types">
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c828dbebaebb Split out different kinds of LDPCs into their own subsection
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  1388
        <img src="images/ldpc-hierarchy.png" alt="Types of Linked Data Platform Containers" />
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16d872a712b6 Adopted container hierarchy and merged Indirect Container into Container
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  1389
        <figcaption>Class relationship of types of Linked Data Platform Containers</figcaption>
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  1390
    </figure>
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  1391
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1392
	<p>The following table illustrates some differences between <a title="membership">membership</a> and 
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  1393
	<a title="containment">containment</a> triples.  For details on the normative behavior, see appropriate sections
c4b538b7e57f ACTION-120 (Part 2) Added concepts of containers (basic, direct and indirect) to LDPC intro
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  1394
	below.
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