/**
* Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.org>
* Copyright (C) 2011 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.transit_data_federation.services.blocks;
import java.util.List;
import org.onebusaway.gtfs.model.AgencyAndId;
import org.onebusaway.transit_data_federation.services.transit_graph.BlockConfigurationEntry;
import org.onebusaway.transit_data_federation.services.transit_graph.BlockTripEntry;
/**
* Methods for manipulating {@link BlockTripInstance} objects.
*
* @author bdferris
* @see BlockTripInstance
*/
public class BlockTripInstanceLibrary {
/**
* Creates a {@link BlockTripInstance} from the specified
* {@link BlockInstance} with the trip from the block matching the specified
* tripId. If no trip is found in the block with the specified id, then null
* is returned.
*
* Note that this is just a linear search. If this ends up being a performance
* bottle-neck, we may have to look for a faster method here
*
* @param blockInstance
* @param tripId
* @return the new matching BlockTripInstance
*/
public static BlockTripInstance getBlockTripInstance(
BlockInstance blockInstance, AgencyAndId tripId) {
BlockConfigurationEntry blockConfig = blockInstance.getBlock();
List<BlockTripEntry> blockTrips = blockConfig.getTrips();
for (int i = 0; i < blockTrips.size(); ++i) {
BlockTripEntry blockTrip = blockTrips.get(i);
if (blockTrip.getTrip().getId().equals(tripId)) {
return new BlockTripInstance(blockTrip, blockInstance.getState());
}
}
return null;
}
}