JSON-LD 上下文：指定（固有）rdf：属性值的类型

Question

I've created an owl ontology and want to create as simple transfer format possible. To do that, I'd like to include any context (vocab) information into json-ld context. Specifically, I'd like to specify (inherent) rdf:type of a value of a particular property.

So: I have this json:

{
  "@type": "Observation",
  "observedProperty": "temperature"
}

I'd like to create a context, so that the expanded form looks like this:

[
  {
    "@type": [
      "http://www.my.vocab.org/def/Observation"
    ],
    "http://www.my.vocab.org/def/observedProperty": [
      {
        "@id": "http://www.my.vocab.org/temperature",
        "@type": "http://www.my.vocab.org/def/Property"
      }
    ]
  }
]

Expansion using this context:

"@context": {
    "@base": "http://www.my.vocab.org/",
    "@vocab": "def/",
    "property": "property/",
    "observedProperty": {
      "@type": "Property"
    }
  }

results in

...
   "@type": "http://www.my.vocab.org/def/Property",
   "@value": "temperature"
...

Expansion using

"@context": {
 ...
      "@type": "@id"
 ...
  }

obviously doesn't include the type. Any ideas?

Answer 1

This has come up before, and type coercion doesn't work that way. Take a look at the note in https://www.w3.org/TR/json-ld11/#type-coercion .

However, you can do this with framing.