@openhps/core/dist/esm5/nodes/source/HistorySourceNode.js

Open Hybrid Positioning System - Core component

import { DataObject } from '../../data';
import { DataFrame } from '../../data/DataFrame';
import { SourceNode } from '../SourceNode';
/**
 * @category Source node
 */
export class HistorySourceNode extends SourceNode {
  constructor(options) {
    super(options);
  }
  onPull(options = {
    requestedObjects: []
  }) {
    return new Promise((resolve, reject) => {
      const service = this.model.findDataService(DataObject);
      const requestPromises = [];
      options.requestedObjects.forEach(uid => {
        requestPromises.push(new Promise(resolve => {
          service.findByUID(uid).then(object => {
            resolve(object);
          }).catch(() => {
            // Ignore
            resolve(undefined);
          });
        }));
      });
      // Complete service requests
      Promise.all(requestPromises).then(objects => {
        // Create a new dataframe from these objects
        const frame = new DataFrame(this.source);
        objects.forEach(object => {
          if (object) {
            frame.addObject(object);
          }
        });
        resolve(frame);
      }).catch(reject);
    });
  }
}