| /* |
| * 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; |
| |
| import java.util.Collection; |
| |
| import org.apache.openjpa.conf.OpenJPAConfiguration; |
| import org.apache.openjpa.lib.log.Log; |
| |
| /** |
| * Abstract {@link LockManager} implementation. |
| * |
| * @author Marc Prud'hommeaux |
| */ |
| public abstract class AbstractLockManager |
| implements LockManager { |
| |
| /** |
| * The context against which this LockManager is operating. |
| */ |
| protected StoreContext ctx; |
| |
| /** |
| * Runtime log to write locking messages to. |
| */ |
| protected Log log; |
| |
| @Override |
| public void setContext(StoreContext ctx) { |
| this.ctx = ctx; |
| this.log = ctx.getConfiguration().getLog |
| (OpenJPAConfiguration.LOG_RUNTIME); |
| } |
| |
| public StoreContext getContext() { |
| return ctx; |
| } |
| |
| /** |
| * Delegates to {@link LockManager#lock} with each element of the collection |
| */ |
| @Override |
| public void lockAll(Collection sms, int level, int timeout, |
| Object context) { |
| for (Object sm : sms) { |
| lock((OpenJPAStateManager) sm, level, timeout, context); |
| } |
| } |
| |
| /** |
| * Does nothing by default. |
| */ |
| @Override |
| public void beginTransaction() { |
| } |
| |
| /** |
| * Does nothing by default. |
| */ |
| @Override |
| public void endTransaction() { |
| } |
| |
| /** |
| * Does nothing by default. |
| */ |
| @Override |
| public void close () { |
| } |
| |
| /** |
| * Default not to skip relation field to maintain PessimisticLockManager semantics. |
| */ |
| public boolean skipRelationFieldLock() { |
| return false; |
| } |
| } |
| |