@jahed/sparql-engine/dist/operators/join/rewriting-op.d.ts

SPARQL query engine for servers and web browsers.

import ExecutionContext from "../../engine/context/execution-context.ts";
import type { PipelineStage } from "../../engine/pipeline/pipeline-engine.ts";
import BGPStageBuilder from "../../engine/stages/bgp-stage-builder.ts";
import type { Bindings } from "../../rdf/bindings.ts";
import Graph from "../../rdf/graph.ts";
import type { EngineTriple } from "../../types.ts";
/**
 * A special operator used to evaluate a UNION query with a RDF Graph,
 * and then rewrite bindings generated and performs union with original bindings.
 * It is designed to be used in the bound join algorithm
 * @private
 * @param  graph - Graph queried
 * @param  bgpBucket - List of BGPs to evaluate
 * @param  rewritingTable - Map <rewriting key -> original bindings>
 * @param  context - Query execution context
 * @return A pipeline stage which evaluates the query.
 */
export default function rewritingOp(graph: Graph, bgpBucket: EngineTriple[][], rewritingTable: Map<number, Bindings>, builder: BGPStageBuilder, context: ExecutionContext): Promise<PipelineStage<Bindings>>;