@jahed/sparql-engine/dist/engine/stages/graph-stage-builder.d.ts

SPARQL query engine for servers and web browsers.

import type { GraphPattern, IriTerm, Query } from "sparqljs";
import type { Bindings } from "../../rdf/bindings.ts";
import ExecutionContext from "../context/execution-context.ts";
import type { PipelineStage } from "../pipeline/pipeline-engine.ts";
import StageBuilder from "./stage-builder.ts";
/**
 * A GraphStageBuilder evaluates GRAPH clauses in a SPARQL query.
 */
export default class GraphStageBuilder extends StageBuilder {
    /**
     * Build a {@link PipelineStage} to evaluate a GRAPH clause
     * @param  source  - Input {@link PipelineStage}
     * @param  node    - Graph clause
     * @param  options - Execution options
     * @return A {@link PipelineStage} used to evaluate a GRAPH clause
     */
    execute(source: PipelineStage<Bindings>, node: GraphPattern, context: ExecutionContext): Promise<PipelineStage<Bindings>>;
    /**
     * Returns a {@link PipelineStage} used to evaluate a GRAPH clause
     * @param  source    - Input {@link PipelineStage}
     * @param  iri       - IRI of the GRAPH clause
     * @param  subquery  - Subquery to be evaluated
     * @param  options   - Execution options
     * @return A {@link PipelineStage} used to evaluate a GRAPH clause
     */
    _buildIterator(source: PipelineStage<Bindings>, iri: IriTerm, subquery: Query, context: ExecutionContext): Promise<PipelineStage<Bindings>>;
}