@rdfc/sparql-ingest-processor-ts/lib/Utils.js

SPARQL Update function to be within RDF-Connect pipelines

import { XSD } from "@treecg/types";
import { DataFactory } from "rdf-data-factory";
const df = new DataFactory();
export function getSubjects(store, predicate, object, graph) {
    return store.getQuads(null, predicate, object, graph).map((quad) => {
        return quad.subject;
    });
}
export function getObjects(store, subject, predicate, graph) {
    return store.getQuads(subject, predicate, null, graph).map((quad) => {
        return quad.object;
    });
}
export function sanitizeQuads(store) {
    for (const q of store.getQuads()) {
        if (q.object.termType === "Literal" && q.object.datatype.value === XSD.integer) {
            if (/\+\d+/.test(q.object.value) && q.object.value.startsWith("+")) {
                store.removeQuad(q);
                store.addQuad(df.quad(q.subject, q.predicate, df.literal(q.object.value.substring(1), df.namedNode(XSD.integer)), q.graph));
            }
        }
    }
}
export async function doSPARQLRequest(query, url) {
    const res = await fetch(url, {
        method: "POST",
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
        },
        body: `update=${fixedEncodeURIComponent(query)}`
    });
    if (!res.ok) {
        throw new Error(`HTTP request failed with code ${res.status} and message: \n${await res.text()}`);
    }
}
function fixedEncodeURIComponent(str) {
    return encodeURIComponent(str).replace(/[!'()*]/g, function (c) {
        return '%' + c.charCodeAt(0).toString(16);
    });
}