Comunica VoID Description RDF Metadata Extract Actor

An RDF Metadata Extract actor that extracts VoID dataset description metadata.

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-metadata-extract-void
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Metadata entries

This actor adds the following entries to the metadata object.

• datasets: An array containing the extracted VoID dataset metadata.

Configure

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

{
  "@context": [
    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-rdf-metadata-extract-void/^4.0.0/components/context.jsonld"
  ],
  "actors": [
    {
      "@id": "urn:comunica:default:rdf-metadata-extract/actors#void",
      "@type": "ActorRdfMetadataExtractVoid"
    }
  ]
}
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Config Parameters

• bindingsCacheSize: How many bindings should be cached internally for cardinality estimation per dataset, defaults to 10.