rdf-dataset-fragmenter/lib/transform/QuadTransformerBlankToNamed.js

Fragments an RDF dataset into multiple parts

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.QuadTransformerBlankToNamed = void 0;
const rdf_data_factory_1 = require("rdf-data-factory");
const QuadTransformerTerms_1 = require("./QuadTransformerTerms");
const DF = new rdf_data_factory_1.DataFactory();
/**
 * A quad transformer that replaces BlankNodes by NamedNodes if the node-value changes when performing
 * search/ replacement.
 */
class QuadTransformerBlankToNamed extends QuadTransformerTerms_1.QuadTransformerTerms {
    constructor(searchRegex, replacementString) {
        super();
        this.search = new RegExp(searchRegex, 'u');
        this.replacement = replacementString;
    }
    transformTerm(term) {
        if (term.termType === 'BlankNode') {
            const value = term.value.replace(this.search, this.replacement);
            if (value !== term.value) {
                return DF.namedNode(value);
            }
        }
        return term;
    }
}
exports.QuadTransformerBlankToNamed = QuadTransformerBlankToNamed;
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