@comunica/actor-query-operation-bgp-traversal

Comunica BGP Traversal Query Operation Actor

A Query Operation actor that handles SPARQL Basic Graph Patterns based on Hartig's heuristic for plan selection in link traversal environments as described in "Zero-Knowledge Query Planning for an Iterator Implementation of Link Traversal Based Query Execution".

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-query-operation-bgp-left-deep-smallest

Configure

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

{
  "@context": [
    ...
    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-query-operation-bgp-left-deep-smallest/^1.0.0/components/context.jsonld"  
  ],
  "actors": [
    ...
    {
      "@id": "config-sets:sparql-queryoperators.json#myLeftDeepSmallestBgpQueryOperator",
      "@type": "ActorQueryOperationBgpLeftDeepSmallest",
      "cbqo:mediatorQueryOperation": { "@id": "config-sets:sparql-queryoperators.json#mediatorQueryOperation" }
    }
  ]
}