/*
* JBoss, Home of Professional Open Source
* Copyright 2010, Red Hat Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.web.deployment;
import org.apache.tomcat.InstanceManager;
import org.jboss.as.naming.ManagedReference;
import org.jboss.as.web.deployment.ConcurrentReferenceHashMap.Option;
import org.jboss.as.web.deployment.component.ComponentInstantiator;
import org.jboss.msc.service.ServiceName;
import javax.naming.NamingException;
import java.lang.reflect.InvocationTargetException;
import java.util.Collections;
import java.util.EnumSet;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
/**
* The web injection container.
*
* @author Emanuel Muckenhuber
*/
public class WebInjectionContainer implements InstanceManager {
private final ClassLoader classloader;
private final Map<String, ComponentInstantiator> webComponentInstantiatorMap = new HashMap<String, ComponentInstantiator>();
private final Set<ServiceName> serviceNames = new HashSet<ServiceName>();
private final Map<Object, ManagedReference> instanceMap;
public WebInjectionContainer(ClassLoader classloader) {
this.classloader = classloader;
this.instanceMap = new ConcurrentReferenceHashMap<Object, ManagedReference>
(256, ConcurrentReferenceHashMap.DEFAULT_LOAD_FACTOR,
Runtime.getRuntime().availableProcessors(), ConcurrentReferenceHashMap.ReferenceType.STRONG,
ConcurrentReferenceHashMap.ReferenceType.STRONG, EnumSet.of(Option.IDENTITY_COMPARISONS));
}
public void addInstantiator(String className, ComponentInstantiator instantiator) {
webComponentInstantiatorMap.put(className, instantiator);
serviceNames.addAll(instantiator.getServiceNames());
}
public void destroyInstance(Object instance) throws IllegalAccessException, InvocationTargetException {
final ManagedReference reference = instanceMap.remove(instance);
if (reference != null) {
reference.release();
}
}
public Object newInstance(String className) throws IllegalAccessException, InvocationTargetException, NamingException, InstantiationException, ClassNotFoundException {
return newInstance(classloader.loadClass(className));
}
public Object newInstance(Class<?> clazz) throws IllegalAccessException, InvocationTargetException, NamingException, InstantiationException {
final ComponentInstantiator instantiator = webComponentInstantiatorMap.get(clazz.getName());
if (instantiator != null) {
return instantiate(instantiator);
}
return clazz.newInstance();
}
public void newInstance(Object arg0) throws IllegalAccessException, InvocationTargetException, NamingException {
final ComponentInstantiator instantiator = webComponentInstantiatorMap.get(arg0.getClass().getName());
if (instantiator != null) {
instanceMap.put(arg0, instantiator.initializeInstance(arg0));
}
}
public Object newInstance(String className, ClassLoader cl) throws IllegalAccessException, InvocationTargetException, NamingException, InstantiationException, ClassNotFoundException {
final ComponentInstantiator instantiator = webComponentInstantiatorMap.get(className);
if (instantiator != null) {
return instantiate(instantiator);
}
return cl.loadClass(className).newInstance();
}
private Object instantiate(ComponentInstantiator instantiator) {
ManagedReference reference = instantiator.getReference();
instanceMap.put(reference.getInstance(), reference);
return reference.getInstance();
}
public Set<ServiceName> getServiceNames() {
return Collections.unmodifiableSet(serviceNames);
}
}