Comunica JSON-LD RDF Parse Actor

An RDF Parse actor that handles JSON-LD.

This module is part of the Comunica framework, and should only be used by developers that want to build their own query engine.

Click here if you just want to query with Comunica.

Install

$ yarn add @comunica/actor-rdf-parse-jsonld

Configure

After installing, this package can be added to your engine's configuration as follows:

{
  "@context": [
    ...
    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-rdf-parse-jsonld/^5.0.0/components/context.jsonld"
  ],
  "actors": [
    ...
    {
      "@id": "urn:comunica:default:rdf-parse/actors#jsonld",
      "@type": "ActorRdfParseJsonLd",
      "priorityScale": 0.9,
      "mediatorHttp": { "@id": "urn:comunica:default:http/mediators#main" }
    }
  ]
}

Config Parameters

• priorityScale: An optional priority for this parser, used for content negotiation, defaults to 1.
• httpInvalidator: An optional actor that listens to HTTP invalidation events.
• cacheSize: The maximum number of fetched remote JSON-LD documents (including contexts) in the LRU cache, set to 0 to disable, defaults to 128.
• mediatorHttp: A mediator over the HTTP bus, for fetching remote JSON-LD contexts.

Passing custom options

If you want to pass custom options to the JSON-LD parser, you can use the '@comunica/actor-rdf-parse-jsonld:parserOptions' context entry to provide parser options as a hash.

Using a custom document loader

If you want to override how the JSON-LD parser loads external contexts, you can pass a custom document loader via the '@comunica/actor-rdf-parse-jsonld:documentLoader' context entry. This document loader must implement the IDocumentLoader interface.

Enabling stricter parsing mode

Via the '@comunica/actor-rdf-parse-jsonld:strictValues' context entry, you can set the JSON-LD parser to run in a more strict mode. This corresponds to the strictValues option in JSON-LD Streaming Parser.