/*
* JBoss, Home of Professional Open Source.
* Copyright 2011, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.ee.component;
import static org.jboss.as.ee.EeMessages.MESSAGES;
import java.util.concurrent.atomic.AtomicReference;
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;
/**
* An interceptor factory which produces interceptors which release a managed reference.
*
* @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
*/
class ManagedReferenceReleaseInterceptorFactory implements InterceptorFactory {
private final Object contextKey;
/**
* Construct a new instance.
*
* @param contextKey the context key
*/
public ManagedReferenceReleaseInterceptorFactory(final Object contextKey) {
if (contextKey == null) {
throw MESSAGES.nullVar("contextKey");
}
this.contextKey = contextKey;
}
/**
* {@inheritDoc}
*/
public Interceptor create(final InterceptorFactoryContext context) {
@SuppressWarnings("unchecked")
final AtomicReference<ManagedReference> referenceReference = (AtomicReference<ManagedReference>) context.getContextData().get(contextKey);
return new ManagedReferenceReleaseInterceptor(referenceReference);
}
/**
* An interceptor which releases a managed reference.
*
* @author <a href="mailto:david.lloyd@redhat.com">David M. Lloyd</a>
*/
static final class ManagedReferenceReleaseInterceptor implements Interceptor {
private final AtomicReference<ManagedReference> referenceReference;
/**
* Construct a new instance.
*
* @param referenceReference the holder for the managed reference
*/
public ManagedReferenceReleaseInterceptor(final AtomicReference<ManagedReference> referenceReference) {
if (referenceReference == null) {
throw MESSAGES.nullVar("referenceReference");
}
this.referenceReference = referenceReference;
}
/**
* {@inheritDoc}
*/
public Object processInvocation(final InterceptorContext context) throws Exception {
try {
return context.proceed();
} finally {
final ManagedReference managedReference = referenceReference.getAndSet(null);
if (managedReference != null) {
managedReference.release();
}
}
}
}
}