@jahed/sparql-engine/src/engine/stages/distinct-stage-builder.ts

SPARQL query engine for servers and web browsers.

// SPDX-License-Identifier: MIT
import sparqlDistinct from "../../operators/sparql-distinct.ts";
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 DistinctStageBuilder evaluates DISTINCT modifiers
 */
export default class DistinctStageBuilder extends StageBuilder {
  async execute(
    source: PipelineStage<Bindings>,
    context: ExecutionContext
  ): Promise<PipelineStage<Bindings>> {
    return sparqlDistinct(source);
  }
}