graphql-ld-comunica
Version:
A GraphQL-LD engine that is backed by Comunica
31 lines • 1.6 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.QueryEngineComunica = void 0;
const actor_init_sparql_1 = require("@comunica/actor-init-sparql");
const stringifyStream = require("stream-to-string");
/**
* A GraphQL-LD engine that is backed by Comunica.
*/
class QueryEngineComunica {
constructor(context) {
this.comunicaEngine = actor_init_sparql_1.newEngine();
this.context = context;
}
query(query, options) {
return __awaiter(this, void 0, void 0, function* () {
const { data } = yield this.comunicaEngine.resultToString(yield this.comunicaEngine.query(query, Object.assign(Object.assign({}, options), this.context)), 'application/sparql-results+json');
return JSON.parse(yield stringifyStream(data));
});
}
}
exports.QueryEngineComunica = QueryEngineComunica;
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