JsonLdGraphDecoder class

Decoder for JSON-LD format

Adapter that bridges the RdfDecoder base class to the implementation-specific JsonLdParser. This class is responsible for:

1. Adapting the RDF Core decoder interface to the JSON-LD parser
2. Converting parsed triples into an RdfGraph
3. Managing configuration options for the parsing process
4. Handling named graphs according to the configured mode

The decoder creates an RDF Graph from the JSON-LD input. How named graphs are handled depends on the JsonLdGraphDecoderOptions.namedGraphHandling setting:

• NamedGraphHandling.strict: Throws an exception if named graphs are present
• NamedGraphHandling.ignoreNamedGraphs: Returns only the default graph
• NamedGraphHandling.mergeIntoDefault: Merges all graphs into one

Example usage:

// Strict mode (default)
final decoder = JsonLdGraphDecoder();
final graph = decoder.convert(jsonLdString); // throws if named graphs present

// Merge mode
final mergeDecoder = JsonLdGraphDecoder(
  options: JsonLdGraphDecoderOptions(
    namedGraphHandling: NamedGraphHandling.mergeIntoDefault,
  ),
);
final mergedGraph = mergeDecoder.convert(jsonLdString);