/*
* 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.myfaces.config.annotation;
import java.lang.reflect.InvocationTargetException;
import java.util.Map;
import java.util.WeakHashMap;
import java.util.logging.Logger;
import javax.faces.FacesException;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.naming.NamingException;
import org.apache.myfaces.shared_impl.util.ClassUtils;
import org.apache.tomcat.InstanceManager;
/**
* An annotation lifecycle provider for Tomcat 7.
*/
public class Tomcat7AnnotationLifecycleProvider implements
DiscoverableLifecycleProvider, LifecycleProvider2
{
private static Logger log = Logger.getLogger(TomcatAnnotationLifecycleProvider.class.getName());
private WeakHashMap<ClassLoader, InstanceManager> instanceManagers = null;
public Tomcat7AnnotationLifecycleProvider(ExternalContext externalContext)
{
instanceManagers = new WeakHashMap<ClassLoader, InstanceManager>();
}
public Object newInstance(String className)
throws ClassNotFoundException, IllegalAccessException,
InstantiationException, NamingException, InvocationTargetException
{
Class<?> clazz = ClassUtils.classForName(className);
log.info("Creating instance of " + className);
Object object = clazz.newInstance();
return object;
}
public void destroyInstance(Object instance)
throws IllegalAccessException, InvocationTargetException
{
InstanceManager manager = instanceManagers
.get(ClassUtils.getContextClassLoader());
if (manager != null)
{
manager.destroyInstance(instance);
}
}
public void postConstruct(Object instance)
throws IllegalAccessException, InvocationTargetException
{
InstanceManager manager = instanceManagers
.get(ClassUtils.getContextClassLoader());
if (manager == null)
{
//Initialize manager
manager = initManager();
}
//Is initialized
if (manager != null)
{
//Inject resources
try
{
manager.newInstance(instance);
}
catch (NamingException e)
{
throw new FacesException(e);
}
}
}
public boolean isAvailable()
{
try
{
Class.forName("org.apache.tomcat.InstanceManager",
true, ClassUtils.getContextClassLoader());
return true;
}
catch (Exception e)
{
// ignore
}
return false;
}
private InstanceManager initManager()
{
FacesContext context = FacesContext.getCurrentInstance();
if (context == null)
{
return null;
}
ExternalContext extCtx = context.getExternalContext();
if (extCtx == null)
{
return null;
}
// get application map to access ServletContext attributes
Map<String, Object> applicationMap = extCtx.getApplicationMap();
InstanceManager instanceManager = (InstanceManager)
applicationMap.get(InstanceManager.class.getName());
if (instanceManager != null)
{
instanceManagers.put(ClassUtils.getContextClassLoader(),
instanceManager);
}
return instanceManager;
}
}