org.onebusaway.gtfs_merge.strategies.AgencyMergeStrategy Maven / Gradle / Ivy

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A tool for merging GTFS feeds.
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/**
 * Copyright (C) 2012 Google, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.onebusaway.gtfs_merge.strategies;

import org.onebusaway.csv_entities.schema.BeanWrapper;
import org.onebusaway.csv_entities.schema.BeanWrapperFactory;
import org.onebusaway.gtfs.model.Agency;
import org.onebusaway.gtfs.model.AgencyAndId;
import org.onebusaway.gtfs.model.IdentityBean;
import org.onebusaway.gtfs.model.Route;
import org.onebusaway.gtfs.services.GtfsRelationalDao;
import org.onebusaway.gtfs_merge.GtfsMergeContext;

/**
 * Entity merge strategy for handling {@link Agency} entities.
 * 
 * @author bdferris
 */
public class AgencyMergeStrategy extends
    AbstractIdentifiableSingleEntityMergeStrategy {

  public AgencyMergeStrategy() {
    super(Agency.class);
    _duplicateScoringStrategy.addPropertyMatch("name");
    _duplicateScoringStrategy.addPropertyMatch("url");
  }

  @Override
  protected void replaceDuplicateEntry(GtfsMergeContext context,
      Agency oldAgency, Agency newAgency) {
    GtfsRelationalDao source = context.getSource();
    for (Route route : source.getRoutesForAgency(oldAgency)) {
      route.setAgency(newAgency);
    }
    if (!oldAgency.getId().equals(newAgency.getId())) {
      renameAgencyId(source, oldAgency.getId(), newAgency.getId());
    }
  }

  @Override
  protected void rename(GtfsMergeContext context, IdentityBean entity) {

    GtfsRelationalDao source = context.getSource();
    String prefix = context.getPrefix();

    Agency agency = (Agency) entity;
    String oldAgencyId = agency.getId();
    String newAgencyId = prefix + oldAgencyId;
    agency.setId(newAgencyId);
    renameAgencyId(source, oldAgencyId, newAgencyId);
  }

  private void renameAgencyId(GtfsRelationalDao source, String oldAgencyId,
      String newAgencyId) {
    bulkRenameAgencyId(source.getAllStops(), oldAgencyId, newAgencyId);
    bulkRenameAgencyId(source.getAllRoutes(), oldAgencyId, newAgencyId);
    bulkRenameAgencyId(source.getAllTrips(), oldAgencyId, newAgencyId);
    bulkRenameAgencyId(source.getAllFareAttributes(), oldAgencyId, newAgencyId);
    bulkRenameAgencyId(source.getAllPathways(), oldAgencyId, newAgencyId);

    bulkRenameAgencyIdInProperties(source.getAllTrips(), oldAgencyId,
        newAgencyId, "serviceId", "shapeId");
    bulkRenameAgencyIdInProperties(source.getAllCalendars(), oldAgencyId,
        newAgencyId, "serviceId");
    bulkRenameAgencyIdInProperties(source.getAllCalendarDates(), oldAgencyId,
        newAgencyId, "serviceId");
    bulkRenameAgencyIdInProperties(source.getAllShapePoints(), oldAgencyId,
        newAgencyId, "shapeId");
  }

  private > void bulkRenameAgencyId(
      Iterable elements, String oldAgencyId, String newAgencyId) {
    for (T element : elements) {
      AgencyAndId id = element.getId();
      if (id.getAgencyId().equals(oldAgencyId)) {
        AgencyAndId newId = new AgencyAndId(newAgencyId, id.getId());
        element.setId(newId);
      }
    }
  }

  private  void bulkRenameAgencyIdInProperties(Iterable elements,
      String oldAgencyId, String newAgencyId, String... properties) {
    for (Object element : elements) {
      BeanWrapper wrapped = BeanWrapperFactory.wrap(element);
      for (String property : properties) {
        AgencyAndId id = (AgencyAndId) wrapped.getPropertyValue(property);
        if (id != null && id.getAgencyId().equals(oldAgencyId)) {
          AgencyAndId updatedId = new AgencyAndId(newAgencyId, id.getId());
          wrapped.setPropertyValue(property, updatedId);
        }
      }
    }
  }

}