W3C Blog

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 a JSON-LD serialization, too, in spite of the fact that JSON-LD is not yet final either (it is under development by a W3C Community Group). However, adding this to the system it shows the potentials of this combination…

An example may be the schema.org example I used in another blog lately:

<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>     

Running this through the distiller, one gets the following JSON output:

{
    "@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"
}

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…