/**
* 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.presentation.impl.transit_data;
import org.onebusaway.container.cache.CacheKeyInfo;
import org.onebusaway.container.cache.CacheableObjectKeyFactory;
import org.onebusaway.transit_data.model.ArrivalsAndDeparturesQueryBean;
public class ArrivalsAndDeparturesQueryBeanCacheableObjectKeyFactory implements
CacheableObjectKeyFactory {
private long _timeWindow = 30 * 1000;
public ArrivalsAndDeparturesQueryBeanCacheableObjectKeyFactory(
int arrivalAndDepartureCacheWindow) {
_timeWindow = arrivalAndDepartureCacheWindow * 1000;
}
public void setTimeWindow(int timeWindowInSeconds) {
_timeWindow = timeWindowInSeconds * 1000;
}
@Override
public CacheKeyInfo createKey(Object object) {
ArrivalsAndDeparturesQueryBean query = (ArrivalsAndDeparturesQueryBean) object;
query = new ArrivalsAndDeparturesQueryBean(query);
query.setTime(snapTime(query.getTime()));
return new CacheKeyInfo(query, false);
}
private long snapTime(long time) {
return (time / _timeWindow) * _timeWindow;
}
}