@jahed/sparql-engine/dist/operators/update/consumer.js

SPARQL query engine for servers and web browsers.

// SPDX-License-Identifier: MIT
import { createObserver, createSubscription } from "../../engine/pipeline/pipeline-engine.js";
export class Consumable {
    subscribe(observerOrNext) {
        const observer = createObserver(observerOrNext);
        this.execute().then(observer.complete, observer.error);
        return createSubscription();
    }
    forEach(cb) {
        this.execute();
    }
    pipe(fn) {
        return fn(this);
    }
    async *[Symbol.asyncIterator]() {
        await this.execute();
    }
}
export class ErrorConsumable extends Consumable {
    _reason;
    constructor(reason) {
        super();
        this._reason = new Error(reason);
    }
    execute() {
        return Promise.reject(this._reason);
    }
}
export class Consumer extends Consumable {
    _source;
    constructor(source) {
        super();
        this._source = source;
    }
    async execute() {
        for await (const data of this._source) {
            this.onData(data);
        }
    }
}
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