@comunica/actor-context-preprocess-query-source-skolemize

Comunica Query Source Skolemize Context Preprocess Actor

An Context Preprocess actor that places all identified query sources in a skolemization wrapper. This ensures that blank nodes are deterministically available as IRIs, and that blank nodes across multiple sources with shared do not get confused.

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-context-preprocess-query-source-skolemize

Configure

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

{
  "@context": [
    ...
    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-context-preprocess-query-source-skolemize/^1.0.0/components/context.jsonld"
  ],
  "actors": [
    ...
    {
      "@id": "urn:comunica:default:context-preprocess/actors#query-source-skolemize",
      "@type": "ActorContextPreprocessQuerySourceSkolemize"
    }
  ]
}

Changelog

v4.4.1 - 2025-09-25

Fixed

• Fix unsupported extension functions always being pushed to endpoints
  • Add option to always push down extension functions
  • If extension functions are undefined, always push them down

<a name="v4.4.0"></a>