/*
* Copyright 2004-2008 the original author or authors.
*
* Licensed 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.springframework.webflow.conversation.impl;
import java.io.Serializable;
import org.springframework.webflow.conversation.ConversationLockException;
/**
* A normalized interface for conversation locks, used to obtain exclusive access to a conversation.
*
* @author Keith Donald
*/
public interface ConversationLock extends Serializable {
/**
* Acquire the conversation lock.
* @throws ConversationLockException if an exception is thrown attempting to acquire this lock
*/
public void lock() throws ConversationLockException;
/**
* Release the conversation lock.
*/
public void unlock();
}