@comunica/types/lib/IDataset.d.ts

Typings module for Comunica

import type { Algebra } from 'sparqlalgebrajs';
import type { QueryResultCardinality } from './IMetadata';
/**
 * Abstraction to allow grouping of metadata by dataset, in case multiple datasets
 * expose their metadata through the same source URI and thus the same stream.
 */
export interface IDataset {
    /**
     * The unique URI of this dataset.
     */
    uri: string;
    /**
     * The URI from which this dataset was discovered.
     */
    source: string;
    /**
     * Calculate the cardinality of the given operation within this dataset.
     * @param {Algebra.Operation} operation SPARQL algebra operation.
     * @returns {QueryResultCardinality} Upper bound for the cardinality.
     */
    getCardinality: (operation: Algebra.Operation) => QueryResultCardinality | undefined;
}