/*
* 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.spring.common.web;
import org.apache.wicket.spring.SpringWebApplication;
import org.apache.wicket.spring.common.ContactDao;
import org.apache.wicket.spring.injection.annot.SpringComponentInjector;
/**
* Application class for our examples
*
* @author Igor Vaynberg (ivaynberg)
*
*/
public class ExampleApplication extends SpringWebApplication
{
/**
* this field holds a contact dao proxy that is safe to use in wicket components
*/
private ContactDao contactDaoProxy;
/**
* this field holds the actual contact dao retrieved from spring context. this object should
* never be serialized because it will take the container with it, so BE CAREFUL when using
* this.
*/
private ContactDao contactDao;
@Override
protected void init()
{
// THIS LINE IS IMPORTANT - IT INSTALLS THE COMPONENT INJECTOR THAT WILL
// INJECT NEWLY CREATED COMPONENTS WITH THEIR SPRING DEPENDENCIES
addComponentInstantiationListener(new SpringComponentInjector(this));
}
/**
* Retrieves contact dao bean. This bean should not be serialized so BE CAREFUL when using it.
*
* @return contact dao bean
*/
public ContactDao getContactDao()
{
if (contactDao == null)
{
synchronized (this)
{
if (contactDao == null)
{
contactDao = (ContactDao)internalGetApplicationContext().getBean("contactDao",
ContactDao.class);
}
}
}
return contactDao;
}
/**
* Returns a lazy init proxy for the dao bean. This proxy is safe to serialize and will take up
* very little space when serialized.
*
* @return a lazy init proxy for the dao bean
*/
public ContactDao getContactDaoProxy()
{
if (contactDaoProxy == null)
{
synchronized (this)
{
if (contactDaoProxy == null)
{
contactDaoProxy = (ContactDao)createSpringBeanProxy(ContactDao.class,
"contactDao");
}
}
}
return contactDaoProxy;
}
public Class getHomePage()
{
return HomePage.class;
}
}