| /* |
| * 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; |
| } |
| |
| @Override |
| 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; |
| } |
| |
| @Override |
| public boolean supportsIncrementalFlush() { |
| // cannot incrementally flush as saved fields may become out of synch. |
| return false; |
| } |
| } |