org.springframework.webflow.conversation.impl.ContainedConversation Maven / Gradle / Ivy
/*
* Copyright 2002-2006 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.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import org.springframework.webflow.conversation.Conversation;
import org.springframework.webflow.conversation.ConversationId;
/**
* Internal {@link Conversation} implementation used by the conversation
* container.
*
* This is an internal helper class of the {@link SessionBindingConversationManager}.
*
* @author Erwin Vervaet
*/
class ContainedConversation implements Conversation, Serializable {
private ConversationContainer container;
private ConversationId id;
private transient ConversationLock lock;
private Map attributes;
/**
* Create a new contained conversation.
* @param container the container containing the conversation
* @param id the unique id assigned to the conversation
*/
public ContainedConversation(ConversationContainer container, ConversationId id) {
this.container = container;
this.id = id;
this.lock = ConversationLockFactory.createLock();
this.attributes = new HashMap();
}
public ConversationId getId() {
return id;
}
public void lock() {
lock.lock();
}
public Object getAttribute(Object name) {
return attributes.get(name);
}
public void putAttribute(Object name, Object value) {
attributes.put(name, value);
}
public void removeAttribute(Object name) {
attributes.remove(name);
}
public void end() {
container.removeConversation(getId());
}
public void unlock() {
lock.unlock();
}
public String toString() {
return getId().toString();
}
// id based equality
public boolean equals(Object obj) {
if (!(obj instanceof ContainedConversation)) {
return false;
}
return id.equals(((ContainedConversation)obj).id);
}
public int hashCode() {
return id.hashCode();
}
// custom serialisation
private void writeObject(ObjectOutputStream out) throws IOException {
out.defaultWriteObject();
}
private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
in.defaultReadObject();
lock = ConversationLockFactory.createLock();
}
}