JSON-LD 1.1 Processor & API

An implementation of the JSON-LD 1.1 (JSON-based Serialization for Linked Data) specification in Java utilizing JSONP (Java API for JSON Processing).

Conformance

The goal is to pass the official test suite and conform to the JSON-LD 1.1 specification.

Status

work in progress

Feature	Tests	Pass	Status	Notes
Expansion	369	369	100%
Compaction	239	239	100%
Flattening	55	55	100%
JSON-LD to RDF	449	447	99.5%	te075 - @vocab as blank node identifier tli12 - List with bad @base
RDF to JSON-LD	51	51	100%
Framing	89	88	98.8%	t0059 - @embed: @last

See EARL results from the JSON-LD 1.1 Test Suite for more details.

Roadmap

• 0.1 - Expansion Algorithms
• 0.2 - Compaction Algorithms
• 0.3 - Flattening Algorithms
• 0.4 - JSON-LD to RDF
• 0.5 - RDF to JSON-LD
• 0.6 - Framing
• 0.7 - Document & Context loaders
• 0.8 - JSON-LD API
• 1.0 - Documented, A+ code

Examples

Titanium JSON-LD implements the JsonLdProcessor interface and custom interface based on the builder design pattern.

JsonLd Builder API

// Expansion
JsonLd.expand("https://w3c.github.io/json-ld-api/tests/expand/0001-in.jsonld")
      .ordered()
      .get();

JsonLd.expand("https://example.com/document.json")
      .context("https://example.com/context.jsonld")  // external context
      .get();

// Compaction
JsonLd.compact("https://example.com/expanded.jsonld", "https://example.com/context.jsonld").get();

// Flattening
JsonLd.flatten("https://example.com/document.jsonld").get();

// JSON-LD to RDF
JsonLd.toRdf("https://example.com/document.jsonld").get();

// RDF to JSON-LD
RdfDataset dataset = Rdf.createReader(reader, RdfFormat.N_QUADS).readDataset();

JsonLd.fromRdf(dataset).options(options).get();

// Framing
JsonLd.frame("https://example.com/document.jsonld", "https://example.com/frame.jsonld").get();