data-pipeline-information-system-sparql/src/SparqlObject/_select.ts

Sparql function to query/update RDF through SPARQL 1.1

import SparqlObject from './SparqlObject'
import SparqlTask from '../Core/SparqlTask'

import sparqljs from 'sparqljs'
import {jsonBindings} from './_bindings'
import {pathToBinding} from './common';

export function parseRepresentation(this:SparqlObject) {
    let out = '';
    out += 'SELECT ' + jsonBindings.apply(this) + ' ';
    // out += 'WHERE { ' + this.definition + ' } ';
    // out += 'GROUP BY ' + this.groupBy;
    let parser = new sparqljs.Parser(
        this.prefixes
    );
    return parser.parse(out)
}

export function representation(this:SparqlObject): string {
    let parsedQuery = parseRepresentation.apply(this);
    let generator = new sparqljs.Generator()
    generator.stringify(parsedQuery)
    return generator.stringify(parsedQuery);
}



// export function jsonRepresentation(reference:string, path: string[] = []) {
//     let model = SparqlTask.sparqlObjects[reference];
//     let representation = `(CONCAT ('{', `;
//     representation += model.attributes.map((attribute) => {
//         let subRepresentation = '\'"' + attribute.name + '":'; // Remove the '?'
//         if (attribute.arrayable) {
//             subRepresentation += `[',GROUP_CONCAT(DISTINCT CONCAT(${pathToBinding([...path, attribute.name])});separator=','),']`
//         } else {          
//             subRepresentation += `',${pathToBinding([...path, attribute.name])}`
//         }
//         return subRepresentation;
//     })
//         .join(',')
//     representation += `,'}') AS ${pathToBinding([...path, model.reference])})`;
//     return representation;
// }


// export default jsonRepresentation;