org.camunda.bpm.engine.rest.hal.cache.HalResourceCacheEntryComparator Maven / Gradle / Ivy
/*
* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.camunda.bpm.engine.rest.hal.cache;
import java.util.Collections;
import java.util.Comparator;
public class HalResourceCacheEntryComparator implements Comparator {
public final static Comparator INSTANCE = new HalResourceCacheEntryComparator();
public final static Comparator REVERSE = Collections.reverseOrder(INSTANCE);
/** Sort cache entries by ascending create time (oldest first) */
public static Comparator getInstance() {
return INSTANCE;
}
/** Sort cache entries by descending create time (newest first) */
public static Comparator getReverse() {
return REVERSE;
}
public int compare(HalResourceCacheEntry entry1, HalResourceCacheEntry entry2) {
int compareTime = ((Long) entry1.getCreateTime()).compareTo(entry2.getCreateTime());
if (compareTime != 0) {
return compareTime;
}
else {
return entry1.getId().compareTo(entry2.getId());
}
}
}