@comunica/actor-rdf-join-entries-sort-cardinality/lib/ActorRdfJoinEntriesSortCardinality.js

A rdf-join-entries-sort actor that orders by increasing cardinality

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ActorRdfJoinEntriesSortCardinality = void 0;
const bus_rdf_join_entries_sort_1 = require("@comunica/bus-rdf-join-entries-sort");
const core_1 = require("@comunica/core");
/**
 * An actor that sorts join entries by increasing cardinality.
 */
class ActorRdfJoinEntriesSortCardinality extends bus_rdf_join_entries_sort_1.ActorRdfJoinEntriesSort {
    constructor(args) {
        super(args);
    }
    async test(action) {
        return (0, core_1.passTest)({
            accuracy: action.entries.length === 0 ?
                1 :
                action.entries
                    .reduce((sum, entry) => sum + (Number.isFinite(entry.metadata.cardinality.value) ? 1 : 0), 0) /
                    action.entries.length,
        });
    }
    async run(action) {
        const entries = [...action.entries]
            .sort((entryLeft, entryRight) => entryLeft.metadata.cardinality.value - entryRight.metadata.cardinality.value);
        return { entries };
    }
}
exports.ActorRdfJoinEntriesSortCardinality = ActorRdfJoinEntriesSortCardinality;
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