/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.openjpa.kernel;
/**
* A lock manager that does not perform any locking.
*
* @author Marc Prud'hommeaux
*/
public class NoneLockManager
extends AbstractLockManager {
public void lock(OpenJPAStateManager sm, int level, int timeout,
Object context) {
// Duplicate code in the 2 lock methods to enforce proper action
// and avoid unexpected behavior due to method override.
sm.setLock(Boolean.TRUE);
}
public void refreshLock(OpenJPAStateManager sm, int level, int timeout,
Object context) {
sm.setLock(Boolean.TRUE);
}
public void release(OpenJPAStateManager sm) {
sm.setLock(null);
}
public int getLockLevel(OpenJPAStateManager sm) {
return LOCK_NONE;
}
}