org.camunda.bpm.engine.impl.db.entitymanager.operation.comparator.DbBulkOperationComparator 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.impl.db.entitymanager.operation.comparator;
import java.util.Comparator;
import org.camunda.bpm.engine.impl.db.entitymanager.operation.DbBulkOperation;
/**
* Orders bulk operations according to the lexicographical ordering of their statement names
*
* @author Daniel Meyer
*
*/
public class DbBulkOperationComparator implements Comparator {
public int compare(DbBulkOperation firstOperation, DbBulkOperation secondOperation) {
if(firstOperation.equals(secondOperation)) {
return 0;
}
// order by statement
int statementOrder = firstOperation.getStatement().compareTo(secondOperation.getStatement());
if(statementOrder == 0) {
return firstOperation.hashCode() < secondOperation.hashCode() ? -1 : 1;
} else {
return statementOrder;
}
}
}