Comunica Expression Evaluator Term Comparator Factory Actor

A term comparator factory actor that orders terms by evaluating the < function of the expression evaluator in both directions.

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-term-comparator-factory-expression-evaluator
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Configure

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

{
  "@context": [
    ...
    "https://linkedsoftwaredependencies.org/bundles/npm/@comunica/actor-term-comparator-factory-expression-evaluator/^5.0.0/components/context.jsonld"
  ],
  "actors": [
    ...
    {
      "@id": "urn:comunica:default:term-comparator-factory/actors#expression-evaluator",
      "@type": "ActorTermComparatorFactoryExpressionEvaluator",
      "mediatorQueryOperation": { "@id": "urn:comunica:default:query-operation/mediators#main" },
      "mediatorFunctionFactory": { "@id": "urn:comunica:default:function-factory/mediators#main" },
      "mediatorMergeBindingsContext": { "@id": "urn:comunica:default:merge-bindings-context/mediators#main" }
    }
  ]
}
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Config Parameters

• mediatorQueryOperation: A mediator over the query operation bus.
• mediatorFunctionFactory: A mediator over the function factory bus, required to evaluate the comparison functions.
• mediatorMergeBindingsContext: A mediator over the merge bindings context bus.