calculateQueryStats.js

import fs from 'fs';
import { QueryEngine } from '@comunica/query-sparql';
import queryEndpoint from './queryEndpoint.js';
import { BindingsFactory } from '@comunica/bindings-factory';
import { DataFactory } from 'rdf-data-factory';
import factory from '@rdfjs/data-model';

const rdfFactory = new DataFactory();
const bindingsFactory = new BindingsFactory();

const comunicaEngine = new QueryEngine();
const datasetsQuery = fs.readFileSync('./queries/datasets.rq');
const queryStatsQuery = '' + fs.readFileSync('./queries/queryStats.rq');


async function calculateStatsForDataset(dataset, datasetId, options) {
    const {inputEndpointURL, outputDirPath} = options;

    const result = await comunicaEngine.query(
        queryStatsQuery
            .replaceAll('$execs', `<${dataset}/execs>`)
            .replaceAll('$queries', `<${dataset}/queries>`), {
        sources: [{
            type: 'sparql',
            value: inputEndpointURL
        }]
        // initialBindings: bindingsFactory.fromRecord({
        //     dataset: factory.namedNode(dataset)
        // })
    });
    const { data } = await comunicaEngine.resultToString(result, 'text/csv');
    const outputFilePath = outputDirPath + datasetId + '.csv';
    data.pipe(fs.createWriteStream(outputFilePath));
}

async function calculateStats(options) {
    const {inputEndpointURL, datasetsGraphname} = options;
    if (datasetsGraphname) {
        const datasets = queryEndpoint(
            inputEndpointURL, [datasetsGraphname], datasetsQuery);
        for await (const {dataset, datasetId} of datasets) {
            if (!options.excludeDatasets || !options.excludeDatasets.includes(dataset)) {
                console.log('Dataset: ' + dataset);
                await calculateStatsForDataset(dataset, datasetId, options);
            }
        }
    }
}

async function main() {
    await calculateStatsForDataset(
        'http://lsq.aksw.org/datasets/dbpedia', 'dbpedia', {
    // calculateStats({
        inputEndpointURL: 'http://localhost:3030/lsq2/query', 
        // datasetsGraphname: 'http://lsq.aksw.org/datasets',
        outputDirPath: './output/queries/stats/',
        // excludeDatasets: [
        //     'http://lsq.aksw.org/datasets/bench-affymetrix-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-biomedels-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-bioportal-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-ctd-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20151025-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20151124-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20151126-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20151213-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20151230-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20160117-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20160212-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20160222-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20160301-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20160303-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20160304-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20160314-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia-20160411-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbpedia.3.5.1.log-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-dbsnp-lsq2', // missing
        //     'http://lsq.aksw.org/datasets/bench-drugbank-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-genage-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-gendr-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-gene-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-goa-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-hgnc-lsq2', // missing
        //     'http://lsq.aksw.org/datasets/bench-homologene-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-irefindex-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-kegg-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-linkedGeoData-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-linkedspl-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-mgi-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-ncbigene-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-omim-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-pharmgkb-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-sabiork-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-sgd-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-sidr-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-swdf-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-taxonomy-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-wikidata-interval1-organic-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-wikidata-interval2-organic-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-wikidata-interval3-organic-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-wikidata-interval4-organic-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-wikidata-interval5-organic-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-wikidata-interval6-organic-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-wikidata-interval7-organic-lsq2',
        //     'http://lsq.aksw.org/datasets/bench-wormbase-lsq2'
        // ]
    })
}

main().then(() => {
    console.log('done!');
});