@jahed/sparql-engine/dist/operators/sparql-filter.d.ts

SPARQL query engine for servers and web browsers.

import type { PipelineStage } from "../engine/pipeline/pipeline-engine.ts";
import { type CustomFunctions } from "./expressions/sparql-expression.ts";
import type { Expression } from "sparqljs";
import { Bindings } from "../rdf/bindings.ts";
/**
 * Evaluate SPARQL Filter clauses
 * @see {@link https://www.w3.org/TR/sparql11-query/#expressions}
 * @param source - Input {@link PipelineStage}
 * @param expression - FILTER expression
 * @param customFunctions - User-defined SPARQL functions (optional)
 * @return A {@link PipelineStage} which evaluate the FILTER operation
 */
export default function sparqlFilter(source: PipelineStage<Bindings>, expression: Expression, customFunctions?: CustomFunctions): PipelineStage<Bindings>;