Comunica Group File Sources Optimize Query Operation Actor

An Optimize Query Operation actor that optimizes federated queries over multiple file sources by combining them into a single composite file source.

When a query is executed over two or more file-type sources, this actor groups them into a single compositefile source. This simplifies query planning by reducing the number of later union branches.

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-optimize-query-operation-group-file-sources
Copy

Configure

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

{
  "@context": [
    ...
    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-optimize-query-operation-group-file-sources/^5.0.0/components/context.jsonld"
  ],
  "actors": [
    ...
    {
      "@id": "urn:comunica:default:optimize-query-operation/actors#group-file-sources",
      "@type": "ActorOptimizeQueryOperationGroupFileSources",
      "mediatorQuerySourceIdentify": { "@id": "urn:comunica:default:query-source-identify/mediators#main" }
    }
  ]
}
Copy

Config Parameters

• mediatorQuerySourceIdentify: A mediator over the Query Source Identify bus.