/*
* 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 {@link SavepointManager} implementation which stores all data in memory.
*
* @author Steve Kim
* @since 0.3.4
*/
public class InMemorySavepointManager
implements SavepointManager {
private boolean _preFlush = true;
/**
* Return whether to call {@link Broker#preFlush}
* when a savepoint is set. While this will allow for tracking of
* newly embedded fields, it has the side effect of going through
* pre-flush operations.
*/
public boolean getPreFlush() {
return _preFlush;
}
/**
* Set whether to call {@link Broker#preFlush}
* when a savepoint is set. While this will allow for tracking of
* newly embedded fields, it has the side effect of going through
* pre-flush operations.
*/
public void setPreFlush(boolean preFlush) {
_preFlush = preFlush;
}
public OpenJPASavepoint newSavepoint(String name, Broker broker) {
// pre-flush after creating savepoint b/c pre-flush may add/change
// states
OpenJPASavepoint save = new OpenJPASavepoint(broker, name, true);
if (_preFlush)
broker.preFlush();
return save;
}
public boolean supportsIncrementalFlush() {
// cannot incrementally flush as saved fields may become out of synch.
return false;
}
}