@solid-data-modules/rdflib-utils/dist/queries/ProfileQuery.js

Utility functions for the development of Solid Data Modules for RDFLib.js

import { isNamedNode } from "rdflib";
import { pim, solid } from "../namespaces/index.js";
/**
 * Used query data from a user's profile document
 */
export class ProfileQuery {
    constructor(
    /**
     * The WebID of the user
     */
    webIdNode, store) {
        this.webIdNode = webIdNode;
        this.store = store;
    }
    /**
     * Look up the public type index. Returns null if none is found or if the predicated does not link to a proper named node
     */
    queryPublicTypeIndex() {
        const predicate = solid("publicTypeIndex");
        return this.queryNamedNode(predicate);
    }
    /**
     * Look up the preferences file. Returns null if none is found or if the predicated does not link to a proper named node
     */
    queryPreferencesFile() {
        const predicate = pim("preferencesFile");
        return this.queryNamedNode(predicate);
    }
    queryNamedNode(predicate) {
        const node = this.store.any(this.webIdNode, predicate, null, this.webIdNode.doc());
        if (isNamedNode(node)) {
            return node;
        }
        return null;
    }
}
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