/*
* 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.weld.injection;
import org.jboss.as.ee.component.BasicComponentInstance;
import org.jboss.as.ee.component.ComponentConfiguration;
import org.jboss.as.naming.ManagedReference;
import org.jboss.invocation.Interceptor;
import org.jboss.invocation.InterceptorContext;
import org.jboss.invocation.InterceptorFactory;
import org.jboss.invocation.InterceptorFactoryContext;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.atomic.AtomicReference;
/**
* Class that performs CDI injection and calls intializer methods after resource injection
* has been run
*
* @author Stuart Douglas
*/
public class WeldInjectionInterceptor implements Interceptor {
final AtomicReference<ManagedReference> targetReference;
final Map<Class<?>, AtomicReference<ManagedReference>> interceptors;
final WeldManagedReferenceFactory managedReferenceFactory;
public WeldInjectionInterceptor(final AtomicReference<ManagedReference> targetReference, final Map<Class<?>, AtomicReference<ManagedReference>> interceptors, final WeldManagedReferenceFactory managedReferenceFactory) {
this.targetReference = targetReference;
this.interceptors = interceptors;
this.managedReferenceFactory = managedReferenceFactory;
}
@Override
public Object processInvocation(final InterceptorContext context) throws Exception {
final ManagedReference managedReference = targetReference.get();
if (managedReference instanceof WeldManagedReference) {
final WeldManagedReference reference = (WeldManagedReference) managedReference;
reference.getInjectionTarget().inject(targetReference.get().getInstance(), reference.getContext());
//now inject the interceptors
for (final Map.Entry<Class<?>, AtomicReference<ManagedReference>> entry : interceptors.entrySet()) {
final ManagedReference instance = entry.getValue().get();
if (instance != null) {
reference.injectInterceptor(entry.getKey(), instance.getInstance());
}
}
} else if(managedReferenceFactory != null){
//this component was not created by the managed reference factory, this can happen in the case of JSF managed beans
final ManagedReference newReference = managedReferenceFactory.injectExistingReference(managedReference);
targetReference.set(newReference);
}
return context.proceed();
}
public static class Factory implements InterceptorFactory {
final ComponentConfiguration configuration;
final Set<Class<?>> interceptorClasses;
public Factory(final ComponentConfiguration configuration, final Set<Class<?>> interceptorClasses) {
this.configuration = configuration;
this.interceptorClasses = interceptorClasses;
}
@Override
public Interceptor create(final InterceptorFactoryContext context) {
final AtomicReference<ManagedReference> targetReference = (AtomicReference<ManagedReference>) context.getContextData().get(BasicComponentInstance.INSTANCE_KEY);
final Map<Class<?>, AtomicReference<ManagedReference>> interceptors = new HashMap<Class<?>, AtomicReference<ManagedReference>>();
for (Class<?> clazz : interceptorClasses) {
final AtomicReference<ManagedReference> interceptor = (AtomicReference<ManagedReference>) context.getContextData().get(clazz);
if(interceptor != null) {
interceptors.put(clazz, interceptor);
}
}
WeldManagedReferenceFactory managedReferenceFactory = null;
if(configuration.getInstanceFactory() instanceof WeldManagedReferenceFactory) {
managedReferenceFactory = (WeldManagedReferenceFactory) configuration.getInstanceFactory();
}
return new WeldInjectionInterceptor(targetReference, interceptors, managedReferenceFactory);
}
}
}