rdf:type with other fields and framing produces wrong output #242
Description
This is a simplified version of the problem I'm facing.
Having the following json A:
{
"@context": {
"rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
},
"@id": "http://example.com/main/id",
"rdf:type": {
"@id": "http://example.com/rdf/id",
"rdf:label": "someLabel"
}
}And the following framing B:
{
"@context" : {
"rdf" : "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
},
"@id" : "http://example.com/main/id"
}And here is the code I am using to make the apply the framing (it is in Scala, but the conversion to Java should be Trivial).
// the original Json (A) converted to a Jena Model
val jsonModel: Model = ???
// the context of the original Json (A)
val contextJson: String = ???
// the framing (B)
val frame: String = ???
val g = DatasetFactory.wrap(jsonModel).asDatasetGraph
val out = new ByteArrayOutputStream()
val w = RDFDataMgr.createDatasetWriter(RDFFormat.JSONLD_FRAME_FLAT)
val pm = RiotLib.prefixMap(g)
val ctx = new JsonLDWriteContext()
ctx.setJsonLDContext(contextJson)
ctx.setFrame(frame)
Try {
w.write(out, g, pm, null, ctx)
}.flatMap(_ => parse(out.toString).toTry)The output generated is wrong:
{
"@context" : {
"rdf" : "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
},
"@graph" : [
{
"@id" : "http://example.com/main/id",
"@type" : "http://example.com/rdf/id"
}
]
}...because it is omitting the label. I'm expecting the output to be as the input. That's also the behaviour in the Json-LD Playground.
More weirdly, when using a different predicate than rdf:type, the output is correct. So I guess is something related to the special way rdf:type (@type) is being treated when framing.