René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"rdf:type with other fields and framing produces wrong output","articleBody":"This is a simplified version of the problem I'm facing.\r\n\r\nHaving the following json `A`:\r\n\r\n```json\r\n{\r\n  \"@context\": {\r\n    \"rdf\": \"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\r\n  },\r\n  \"@id\": \"http://example.com/main/id\",\r\n  \"rdf:type\": {\r\n    \"@id\": \"http://example.com/rdf/id\",\r\n    \"rdf:label\": \"someLabel\"\r\n  }\r\n}\r\n```\r\n\r\nAnd the following framing `B`:\r\n```json\r\n{\r\n  \"@context\" : {\r\n    \"rdf\" : \"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\r\n  },\r\n  \"@id\" : \"http://example.com/main/id\"\r\n}\r\n```\r\n\r\nAnd 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).\r\n\r\n```scala\r\n   // the original Json (A) converted to a Jena Model\r\n   val jsonModel: Model = ???\r\n   // the context of the original Json (A)\r\n   val contextJson: String = ???\r\n   // the framing (B)\r\n   val frame: String = ???\r\n\r\n    val g   = DatasetFactory.wrap(jsonModel).asDatasetGraph\r\n    val out = new ByteArrayOutputStream()\r\n    val w   = RDFDataMgr.createDatasetWriter(RDFFormat.JSONLD_FRAME_FLAT)\r\n    val pm  = RiotLib.prefixMap(g)\r\n    val ctx = new JsonLDWriteContext()\r\n    ctx.setJsonLDContext(contextJson)\r\n    ctx.setFrame(frame)\r\n    Try {\r\n      w.write(out, g, pm, null, ctx)\r\n    }.flatMap(_ =\u003e parse(out.toString).toTry)\r\n```\r\n\r\nThe output generated is wrong:\r\n```json\r\n{\r\n  \"@context\" : {\r\n    \"rdf\" : \"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\r\n  },\r\n  \"@graph\" : [\r\n    {\r\n      \"@id\" : \"http://example.com/main/id\",\r\n      \"@type\" : \"http://example.com/rdf/id\"\r\n    }\r\n  ]\r\n}\r\n```\r\n...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](https://json-ld.org/playground/#startTab=tab-framed\u0026json-ld=%7B%22%40context%22%3A%7B%22rdf%22%3A%22http%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%22%7D%2C%22%40id%22%3A%22http%3A%2F%2Fexample.com%2Fmain%2Fid%22%2C%22rdf%3Atype%22%3A%7B%22%40id%22%3A%22http%3A%2F%2Fexample.com%2Frdf%2Fid%22%2C%22rdf%3Alabel%22%3A%22someLabel%22%7D%7D\u0026frame=%7B%22%40context%22%3A%7B%22rdf%22%3A%22http%3A%2F%2Fwww.w3.org%2F1999%2F02%2F22-rdf-syntax-ns%23%22%7D%2C%22%40id%22%3A%22http%3A%2F%2Fexample.com%2Fmain%2Fid%22%7D).\r\n\r\nMore 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.","author":{"url":"https://github.com/umbreak","@type":"Person","name":"umbreak"},"datePublished":"2018-09-27T09:30:53.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/242/jsonld-java/issues/242"}