org.apache.wicket.page.PageStoreManager Maven / Gradle / Ivy
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A module that creates a .jar from the classes in wicket, wicket-util and wicket-request modules in order
to create a valid OSGi bundle of the wicket framework.
/*
* 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.wicket.page;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.servlet.http.HttpSessionBindingEvent;
import javax.servlet.http.HttpSessionBindingListener;
import org.apache.wicket.pageStore.IPageStore;
/**
*
*/
public class PageStoreManager extends AbstractPageManager
{
/**
* A cache that holds all registered page managers.
* applicationName -> page manager
*/
private static final ConcurrentMap MANAGERS = new ConcurrentHashMap<>();
private static final String ATTRIBUTE_NAME = "wicket:persistentPageManagerData";
private final IPageStore pageStore;
private final String applicationName;
/**
* Construct.
*
* @param applicationName
* @param pageStore
* @param context
*/
public PageStoreManager(final String applicationName, final IPageStore pageStore,
final IPageManagerContext context)
{
super(context);
this.applicationName = applicationName;
this.pageStore = pageStore;
if (MANAGERS.containsKey(applicationName))
{
throw new IllegalStateException("Manager for application with key '" + applicationName
+ "' already exists.");
}
MANAGERS.put(applicationName, this);
}
/**
* Represents entry for single session. This is stored as session attribute and caches pages
* between requests.
*
* @author Matej Knopp
*/
private static class SessionEntry implements Serializable, HttpSessionBindingListener
{
private static final long serialVersionUID = 1L;
private final String applicationName;
/**
* The id handed to the {@link IPageStore} to identify the session.
*
* Note: If the container changes a session's id, this field remains unchanged on its
* initial value.
*/
private final String sessionId;
private transient List sessionCache;
private transient List