org.opentripplanner.standalone.configure.LoadApplication Maven / Gradle / Ivy

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The OpenTripPlanner multimodal journey planning system

There is a newer version: 2.6.0

package org.opentripplanner.standalone.configure;

import org.opentripplanner.datastore.api.DataSource;
import org.opentripplanner.graph_builder.GraphBuilderDataSources;
import org.opentripplanner.routing.graph.Graph;
import org.opentripplanner.routing.graph.SerializedGraphObject;
import org.opentripplanner.standalone.config.CommandLineParameters;
import org.opentripplanner.standalone.config.ConfigModel;
import org.opentripplanner.transit.service.TransitModel;

/**
 * This class is responsible for loading configuration and setting up the OTP data store.
 * This is used to load the graph, and finally this class can create the
 * {@link ConstructApplication} for the next phase.
 * 
 * By splitting the these two responsibilities into two separate phases we are sure all
 * components (graph and transit model) created in the load phase will be available for
 * creating the application using Dagger dependency injection.
 */
public class LoadApplication {

  private final CommandLineParameters cli;
  private final LoadApplicationFactory factory;

  private boolean dataStoreLoaded = false;

  /**
   * Create a new OTP configuration instance for a given directory.
   */
  public LoadApplication(CommandLineParameters commandLineParameters) {
    this.cli = commandLineParameters;
    this.factory = DaggerLoadApplicationFactory.builder().commandLineParameters(cli).build();
  }

  public void validateConfigAndDataSources() {
    // Load Graph Builder Data Sources to validate it.
    factory.graphBuilderDataSources();
    this.dataStoreLoaded = true;
  }

  public DataSource getInputGraphDataStore() {
    return cli.doLoadGraph()
      ? factory.datastore().getGraph()
      : factory.datastore().getStreetGraph();
  }

  /** Construct application from serialized graph */
  public ConstructApplication appConstruction(SerializedGraphObject obj) {
    return createAppConstruction(obj.graph, obj.transitModel);
  }

  /** Construct application with an empty model. */
  public ConstructApplication appConstruction() {
    return createAppConstruction(factory.emptyGraph(), factory.emptyTransitModel());
  }

  public GraphBuilderDataSources graphBuilderDataSources() {
    if (!dataStoreLoaded) {
      throw new IllegalStateException("Validate graphBuilderDataSources before using it");
    }
    return factory.graphBuilderDataSources();
  }

  public ConfigModel config() {
    return factory.configModel();
  }

  private ConstructApplication createAppConstruction(Graph graph, TransitModel transitModel) {
    return new ConstructApplication(cli, graph, transitModel, config(), graphBuilderDataSources());
  }
}