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Add support for the alternate link relation with type application/ld+json to be used as a redirect if the retrieved document is not JSON.
For w3c/json-ld-syntax#204.
1 parent a8094d9 commit 0f4c6ba

17 files changed

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‎index.html‎

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@@ -5809,7 +5809,7 @@ <h3>LoadDocumentCallback</h3>
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<ol class="changed">
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<li>Create a new {{Promise}} <var>promise</var> and return it.
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The following steps are then executed asynchronously.</li>
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<li>Set <var>document</var> to the body retrieved from
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<li id="LoadDocumentCallback-step-2">Set <var>document</var> to the body retrieved from
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the resource identified by <a data-link-for="LoadDocumentCallback">url</a>,
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or by otherwise locating a resource associated with <a data-link-for="LoadDocumentCallback">url</a>.
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When requesting remote documents the request MUST prefer <a>Content-Type</a> <code>application/ld+json</code>
@@ -5824,6 +5824,13 @@ <h3>LoadDocumentCallback</h3>
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<li>Set <var>documentUrl</var> to the location of the retrieved resource
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considering redirections (exclusive of HTTP status <code>303</code> "See Other" redirects
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as discussed in [[?cooluris]]).</li>
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<li>If the retrieved resource's <a>Content-Type</a> is not <code>application/ld+json</code>
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nor any media type with a <code>+json</code> suffix as defined in [[RFC6839]],
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and the response has an HTTP Link Header [[RFC8259]] using the <code>alternate</code> link relation
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with type `application/ld+json`,
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set <var>url</var> to the associated <code>href</code> relative to the previous <var>url</var>
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and restart the algorithm from <a href="#LoadDocumentCallback-step-2">step 2</a>,
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ensuring that <var>documentUrl</var> is set to the original <var>url</var>.</li>
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<li>If the retrieved resource's <a>Content-Type</a> is <code>application/json</code>
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or any media type with a <code>+json</code> suffix as defined in [[RFC6839]]
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except <code>application/ld+json</code>,
@@ -6372,6 +6379,9 @@ <h2>Changes since JSON-LD Community Group Final Report</h2>
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a context. When this is set, vocabulary-relative IRIs, such as the
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<a>entries</a> of <a>node objects</a>, are expanded or compacted relative
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to the <a>base IRI</a> and the <a>vocabulary mapping</a> using string concatenation.</li>
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<li>In the <a>LoadDocumentCallback</a>, if the retrieved content is not `application/ld+json`
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and there is a link header with `rel=alternate` and `type=application/ld+json`, redirect
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to that content.</li>
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</ul>
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</section>
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‎tests/remote-doc-manifest.jsonld‎

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@@ -134,6 +134,56 @@
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},
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"input": "remote-doc/0013-in.json",
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"expect": "remote-doc/0013-out.jsonld"
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}, {
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"@id": "#tla01",
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"@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
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"name": "Redirects if type is text/html",
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"purpose": "Load an alternate link if type is not ld+json and rel=alternate.",
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"option": {
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"httpLink": "<la01-alternate.jsonld>; rel=\"alternate\"; type=\"application/ld+json\""
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},
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"input": "remote-doc/la01-in.html",
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"expect": "remote-doc/la01-out.jsonld"
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}, {
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"@id": "#tla02",
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"@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
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"name": "Does not redirect if type is application/ld+json",
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"purpose": "Load an alternate link if type is not ld+json and rel=alternate.",
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"option": {
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"httpLink": "<la02-alternate.jsonld>; rel=\"alternate\"; type=\"application/ld+json\""
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},
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"input": "remote-doc/la02-in.jsonld",
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"expect": "remote-doc/la02-out.jsonld"
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}, {
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"@id": "#tla03",
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"@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
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"name": "Does not redirect if link type is not application/ld+json",
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"purpose": "Load an alternate link if type is not ld+json and rel=alternate.",
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"option": {
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"httpLink": "<la03-alternate.json>; rel=\"alternate\"; type=\"application/json\""
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},
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"input": "remote-doc/la03-in.json",
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"expect": "remote-doc/la03-out.jsonld"
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}, {
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"@id": "#tla04",
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"@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
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"name": "Does not redirect if type is application/json",
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"purpose": "Load an alternate link if type is not ld+json and rel=alternate.",
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"option": {
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"httpLink": "<la04-alternate.jsonld>; rel=\"alternate\"; type=\"application/ld+json\""
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},
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"input": "remote-doc/la04-in.json",
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"expect": "remote-doc/la04-out.jsonld"
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}, {
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"@id": "#tla05",
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"@type": ["jld:PositiveEvaluationTest", "jld:ExpandTest"],
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"name": "Base remains that of original document",
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"purpose": "Load an alternate link if type is not ld+json and rel=alternate.",
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"option": {
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"httpLink": "<la05-alternate.jsonld>; rel=\"alternate\"; type=\"application/ld+json\""
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},
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"input": "remote-doc/la05-in.html",
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"expect": "remote-doc/la05-out.jsonld"
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}
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]
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}

‎tests/remote-doc/la01-alternate.jsonld‎

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{
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"@context": {
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"@vocab": "http://example.org/"
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},
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"content": "alternate"
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}

‎tests/remote-doc/la01-in.html‎

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<html>
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<head>
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<title>Content to be skipped</title>
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<script type="application/ld+json">
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{
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"@context": {
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"@vocab": "http://example.org/"
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},
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"content": "skipped"
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}
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</script>
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</head>
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<body>
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<p>This content should be skipped</p>
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</body>
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</html>

‎tests/remote-doc/la01-out.jsonld‎

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[{
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"http://example.org/content": [{"@value": "alternate"}]
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}]

‎tests/remote-doc/la02-alternate.jsonld‎

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{
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"@context": {
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"@vocab": "http://example.org/"
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},
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"content": "alternate"
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}

‎tests/remote-doc/la02-in.jsonld‎

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{
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"@context": {
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"@vocab": "http://example.org/"
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},
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"content": "not skipped"
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}

‎tests/remote-doc/la02-out.jsonld‎

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[{
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"http://example.org/content": [{"@value": "not skipped"}]
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}]

‎tests/remote-doc/la03-alternate.json‎

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{
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"@context": {
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"@vocab": "http://example.org/"
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},
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"content": "alternate"
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}

‎tests/remote-doc/la03-in.json‎

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{
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"@context": {
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"@vocab": "http://example.org/"
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},
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"content": "not skipped"
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}

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