@jahed/sparql-engine/src/engine/pipeline/pipeline.ts

SPARQL query engine for servers and web browsers.

// SPDX-License-Identifier: MIT
import { PipelineEngine } from "./pipeline-engine.ts";
import VectorPipeline from "./vector-pipeline.ts";

// current pipeline engine used for processing bindings
let _currentEngine: PipelineEngine = new VectorPipeline();

/**
 * Singleton class used to access the current pipeline engine
 */
export class Pipeline {
  /**
   * Get the instance of the current pipeline engine
   * @return The instance of the current pipeline engine
   */
  static getInstance(): PipelineEngine {
    return _currentEngine;
  }

  /**
   * Set the instance of the current pipeline engine
   * @param instance  - New pipeline engine to use as the current one
   */
  static setInstance(instance: PipelineEngine): void {
    _currentEngine = instance;
  }
}