01: /*
02: * Copyright 2004-2007 the original author or authors.
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
10: * Unless required by applicable law or agreed to in writing, software
11: * distributed under the License is distributed on an "AS IS" BASIS,
12: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13: * See the License for the specific language governing permissions and
14: * limitations under the License.
15: */
16: package org.springframework.webflow.conversation.impl;
17:
18: import java.io.Serializable;
19: import java.util.concurrent.locks.Lock;
20: import java.util.concurrent.locks.ReentrantLock;
21:
22: /**
23: * A conversation lock that relies on a {@link ReentrantLock} within Java 5's
24: * <code>util.concurrent.locks</code> package.
25: *
26: * @author Keith Donald
27: */
28: class JdkConcurrentConversationLock implements ConversationLock,
29: Serializable {
30:
31: /**
32: * The lock.
33: */
34: private Lock lock = new ReentrantLock();
35:
36: public void lock() {
37: lock.lock();
38: }
39:
40: public void unlock() {
41: lock.unlock();
42: }
43: }
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