@jahed/sparql-engine/dist/engine/stages/minus-stage-builder.js

SPARQL query engine for servers and web browsers.

// SPDX-License-Identifier: MIT
import StageBuilder from "./stage-builder.js";
import { Pipeline } from "../../engine/pipeline/pipeline.js";
import minus from "../../operators/minus.js";
import { BindingBase, Bindings } from "../../rdf/bindings.js";
import ExecutionContext from "../context/execution-context.js";
/**
 * A MinusStageBuilder evaluates MINUS clauses
 */
export default class MinusStageBuilder extends StageBuilder {
    async execute(source, node, context) {
        const engine = Pipeline.getInstance();
        const rightSource = await this.builder._buildWhere(engine.of(new BindingBase()), node.patterns, context);
        return minus(source, rightSource);
    }
}
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