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dc:title="RDFa 1.1 meets JSON-LD in the Distiller…"
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dc:description="I have blogged recently on the update of the RDFa 1.1 Distiller. I have just added a cool new feature. Up to today, the possible serializations were RDF/XML, Turtle, and N Triples. Although not yet final, I decided to add..."
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<h2 class="entry-header">RDFa 1.1 meets JSON-LD in the Distiller…</h2>
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<p>I have<a href="http://www.w3.org/QA/2011/11/new_release_of_the_rdfa_11_dis.html"> blogged recently</a> on the update of the RDFa 1.1 Distiller. I have just added a cool new feature. Up to today, the possible serializations were <a href="http://www.w3.org/TR/rdf-syntax-grammar/">RDF/XML</a>, <a href="http://www.w3.org/TR/turtle/">Turtle</a>, and <a href="http://www.w3.org/TR/rdf-testcases/#ntriples">N Triples</a>. Although not yet final, I decided to add a <a href="http://json-ld.org/spec/latest/json-ld-syntax/">JSON-LD</a> serialization, too, in spite of the fact that JSON-LD is not yet final either (it is under development by a <a href="http://www.w3.org/community/json-ld/">W3C Community Group</a>). However, adding this to the system it shows the potentials of this combination…</p>
<p>An example may be the schema.org example I used in <a href="http://www.w3.org/QA/2011/11/schemaorg_and_rdfa_11_lite_how.html">another blog</a> lately:</p>
<pre><div vocab="http://schema.org/" typeof="Product">
<img property="image" src="dell-30in-lcd.jpg" />
<span property="name">Dell UltraSharp 30" LCD Monitor</span>
<div property="aggregateRating" typeof="AggregateRating">
<span property="ratingValue">87</span>
out of <span property="bestRating">100</span>
based on <span property="ratingCount">24</span> user ratings
</div>
<div property="offers" typeof="AggregateOffer">
<span property="lowPrice">$1250</span>
to <span property="highPrice">$1495</span>
from <span property="offerCount">8</span> sellers
</div>
Sellers:
<div property="offers" typeof="Offer" >
<a property="url" href="save-a-lot-monitors.com/dell-30.html">
Save A Lot Monitors - $1250</a>
</div>
<div property="offers" typeof="Offer">
<a property="url" href="jondoe-gadgets.com/dell-30.html">
Jon Doe's Gadgets - $1350</a>
</div>
...
</div> </pre>
<p>Running this through the distiller, one gets the following JSON output:</p>
<pre>{
"@context": {
"@vocab": "http://schema.org/",
"@coerce": {
"@iri": [
"http://schema.org/image",
"http://schema.org/offers",
"http://schema.org/url",
"http://schema.org/aggregateRating"
]
}
},
"@type": "Product",
"aggregateRating": {
"@type": "AggregateRating",
"ratingCount": "24",
"ratingValue": "87",
"bestRating": "100"
},
"offers": [
{
"@type": "Offer",
"url": "http://www.example.org/save-a-lot-monitors.com/dell-30.html"
},
{
"@type": "AggregateOffer",
"lowPrice": "$1250",
"highPrice": "$1495",
"offerCount": "8"
}
],
"name": "Dell UltraSharp 30\" LCD Monitor",
"image": "http://www.example.org/dell-30in-lcd.jpg"
}</pre>
<p>Of course, the generated JSON may be a bit more complex, e.g., if the original page contains other RDFa attributes generating other triples. But it still looks pretty readable to me…</p>
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<p class="postinfo">Filed by <a href="http://www.w3.org/People/Ivan">Ivan Herman</a> on November 24, 2011 4:12 PM in <a href="http://www.w3.org/QA/archive/technology/html/">HTML</a>, <a href="http://www.w3.org/QA/archive/technology/semantic_web/">Semantic Web</a>, <a href="http://www.w3.org/QA/archive/technology/">Technology</a>, <a href="http://www.w3.org/QA/archive/w3cqa_news/tools/">Tools</a><br />
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