BlockInstanceComparator.java

/**
 * Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.org>
 *
 * 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.transit_data_federation.impl.blocks;

import java.util.Comparator;

import org.onebusaway.gtfs.model.AgencyAndId;
import org.onebusaway.transit_data_federation.services.blocks.BlockInstance;
import org.onebusaway.transit_data_federation.services.transit_graph.BlockConfigurationEntry;
import org.onebusaway.transit_data_federation.services.transit_graph.BlockEntry;

public class BlockInstanceComparator implements Comparator<BlockInstance> {

  @Override
  public int compare(BlockInstance o1, BlockInstance o2) {

    BlockConfigurationEntry bc1 = o1.getBlock();
    BlockConfigurationEntry bc2 = o2.getBlock();
    BlockEntry b1 = bc1.getBlock();
    BlockEntry b2 = bc2.getBlock();

    AgencyAndId bId1 = b1.getId();
    AgencyAndId bId2 = b2.getId();

    int rc = bId1.compareTo(bId2);

    if (rc != 0)
      return rc;

    rc = bc1.getServiceIds().compareTo(bc2.getServiceIds());

    if (rc != 0)
      return rc;

    return Double.compare(o1.getServiceDate(), o2.getServiceDate());
  }
}