Please use https://github.com/piprate/json-gold instead. See the details and further discussion here.
This library is an implementation of the JSON-LD 1.0 specification in Go. It supports both URDNA2015 and URGNA2012 RDF dataset normalisation algorithms.
As of December 1, 2017:
- all JSON-LD 1.0 tests from the official JSON-LD test suite pass
- all RDF Dataset Normalisation tests from the current test suite pass
- JSON-LD 1.1 spec is not currenty supported
This implementation was heavily influenced by JSONLD-Java with some techniques borrowed from PyLD and gojsonld. Big thank you to the contributors of the forementioned libraries for figuring out implementation details of the core algorithms.
See complete code in examples/expand.go.
proc := ld.NewJsonLdProcessor()
options := ld.NewJsonLdOptions("")
// expanding remote document
expanded, err := proc.Expand("http://json-ld.org/test-suite/tests/expand-0002-in.jsonld", options)
if err != nil {
log.Println("Error when expanding JSON-LD document:", err)
return
}
// expanding in-memory document
doc := map[string]interface{}{
"@context": "http://schema.org/",
"@type": "Person",
"name": "Jane Doe",
"jobTitle": "Professor",
"telephone": "(425) 123-4567",
"url": "http://www.janedoe.com",
}
expanded, err = proc.Expand(doc, options)See complete code in examples/compact.go.
proc := ld.NewJsonLdProcessor()
options := ld.NewJsonLdOptions("")
doc := map[string]interface{}{
"@id": "http://example.org/test#book",
"http://example.org/vocab#contains": map[string]interface{}{
"@id": "http://example.org/test#chapter",
},
"http://purl.org/dc/elements/1.1/title": "Title",
}
context := map[string]interface{}{
"@context": map[string]interface{}{
"dc": "http://purl.org/dc/elements/1.1/",
"ex": "http://example.org/vocab#",
"ex:contains": map[string]interface{}{
"@type": "@id",
},
},
}
compactedDoc, err := proc.Compact(doc, context, options)See complete code in examples/flatten.go.
proc := ld.NewJsonLdProcessor()
options := ld.NewJsonLdOptions("")
doc := map[string]interface{}{
"@context": []interface{}{
map[string]interface{}{
"name": "http://xmlns.com/foaf/0.1/name",
"homepage": map[string]interface{}{
"@id": "http://xmlns.com/foaf/0.1/homepage",
"@type": "@id",
},
},
map[string]interface{}{
"ical": "http://www.w3.org/2002/12/cal/ical#",
},
},
"@id": "http://example.com/speakers#Alice",
"name": "Alice",
"homepage": "http://xkcd.com/177/",
"ical:summary": "Alice Talk",
"ical:location": "Lyon Convention Centre, Lyon, France",
}
flattenedDoc, err := proc.Flatten(doc, nil, options)See complete code in examples/frame.go.
proc := ld.NewJsonLdProcessor()
options := ld.NewJsonLdOptions("")
doc := map[string]interface{}{
"@context": map[string]interface{}{
"dc": "http://purl.org/dc/elements/1.1/",
"ex": "http://example.org/vocab#",
"ex:contains": map[string]interface{}{"@type": "@id"},
},
"@graph": []interface{}{
map[string]interface{}{
"@id": "http://example.org/test/#library",
"@type": "ex:Library",
"ex:contains": "http://example.org/test#book",
},
map[string]interface{}{
"@id": "http://example.org/test#book",
"@type": "ex:Book",
"dc:contributor": "Writer",
"dc:title": "My Book",
"ex:contains": "http://example.org/test#chapter",
},
map[string]interface{}{
"@id": "http://example.org/test#chapter",
"@type": "ex:Chapter",
"dc:description": "Fun",
"dc:title": "Chapter One",
},
},
}
frame := map[string]interface{}{
"@context": map[string]interface{}{
"dc": "http://purl.org/dc/elements/1.1/",
"ex": "http://example.org/vocab#",
},
"@type": "ex:Library",
"ex:contains": map[string]interface{}{
"@type": "ex:Book",
"ex:contains": map[string]interface{}{
"@type": "ex:Chapter",
},
},
}
framedDoc, err := proc.Frame(doc, frame, options)See complete code in examples/to_rdf.go.
proc := ld.NewJsonLdProcessor()
options := ld.NewJsonLdOptions("")
options.Format = "application/nquads"
// this JSON-LD document was taken from http://json-ld.org/test-suite/tests/toRdf-0028-in.jsonld
doc := map[string]interface{}{
"@context": map[string]interface{}{
"sec": "http://purl.org/security#",
"xsd": "http://www.w3.org/2001/XMLSchema#",
"rdf": "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
"dc": "http://purl.org/dc/terms/",
"sec:signer": map[string]interface{}{"@type": "@id"},
"dc:created": map[string]interface{}{"@type": "xsd:dateTime"},
},
"@id": "http://example.org/sig1",
"@type": []interface{}{"rdf:Graph", "sec:SignedGraph"},
"dc:created": "2011-09-23T20:21:34Z",
"sec:signer": "http://payswarm.example.com/i/john/keys/5",
"sec:signatureValue": "OGQzNGVkMzVm4NTIyZTkZDYMmMzQzNmExMgoYzI43Q3ODIyOWM32NjI=",
"@graph": map[string]interface{}{
"@id": "http://example.org/fact1",
"dc:title": "Hello World!",
},
}
triples, err := proc.ToRDF(doc, options)See complete code in examples/from_rdf.go.
proc := ld.NewJsonLdProcessor()
options := ld.NewJsonLdOptions("")
triples := `
<http://example.com/Subj1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.com/Type> .
<http://example.com/Subj1> <http://example.com/prop1> <http://example.com/Obj1> .
<http://example.com/Subj1> <http://example.com/prop2> "Plain" .
<http://example.com/Subj1> <http://example.com/prop2> "2012-05-12"^^<http://www.w3.org/2001/XMLSchema#date> .
<http://example.com/Subj1> <http://example.com/prop2> "English"@en .
`
doc, err := proc.FromRDF(triples, options)See complete code in examples/normalize.go.
proc := ld.NewJsonLdProcessor()
options := ld.NewJsonLdOptions("")
options.Format = "application/nquads"
options.Algorithm = "URDNA2015"
doc := map[string]interface{}{
"@context": map[string]interface{}{
"ex": "http://example.org/vocab#",
},
"@id": "http://example.org/test#example",
"@type": "ex:Foo",
"ex:embed": map[string]interface{}{
"@type": "ex:Bar",
},
}
normalizedTriples, err := proc.Normalize(doc, options)