/*
* JBoss, Home of Professional Open Source.
* Copyright 2009, Red Hat Middleware LLC, 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.webservices.integration.injection;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import javax.ejb.EJB;
import org.jboss.deployers.structure.spi.DeploymentUnit;
import org.jboss.ejb3.ejbref.resolver.spi.EjbReference;
import org.jboss.ejb3.ejbref.resolver.spi.EjbReferenceResolver;
import org.jboss.wsf.common.injection.resolvers.AbstractReferenceResolver;
/**
* EJB reference resolver.
*
* @author <a href="mailto:richard.opalka@jboss.org">Richard Opalka</a>
*/
final class EJBBeanReferenceResolver extends AbstractReferenceResolver<EJB>
{
/**
* Deployment unit used for resolving process.
*/
private final DeploymentUnit unit;
/**
* Delegate used to resolve JNDI names.
*/
private final EjbReferenceResolver delegate;
/**
* Constructor.
*
* @param unit deployment unit
* @param delegate EJB reference resolver
*/
EJBBeanReferenceResolver(final DeploymentUnit unit, final EjbReferenceResolver delegate)
{
super(EJB.class);
if (unit == null)
{
throw new IllegalArgumentException("Deployment unit cannot be null");
}
if (delegate == null)
{
throw new IllegalArgumentException("Ejb reference resolver cannot be null");
}
this.unit = unit;
this.delegate = delegate;
}
/**
* @see org.jboss.wsf.common.injection.resolvers.AbstractReferenceResolver#resolveField(java.lang.reflect.Field)
*
* @param field to be resolved
* @return JNDI name of referenced EJB object
*/
@Override
protected String resolveField(final Field field)
{
final EJB ejbAnnotation = field.getAnnotation(EJB.class);
final Class<?> type = field.getType();
final EjbReference reference = this.getEjbReference(ejbAnnotation, type);
return this.delegate.resolveEjb(this.unit, reference);
}
/**
* @see org.jboss.wsf.common.injection.resolvers.AbstractReferenceResolver#resolveMethod(java.lang.reflect.Method)
*
* @param method to be resolved
* @return JNDI name of referenced EJB object
*/
@Override
protected String resolveMethod(final Method method)
{
final EJB ejbAnnotation = method.getAnnotation(EJB.class);
final Class<?> type = method.getParameterTypes()[0];
final EjbReference reference = this.getEjbReference(ejbAnnotation, type);
return this.delegate.resolveEjb(this.unit, reference);
}
/**
* Constructs EjbReference.
*
* @param ejbAnnotation ejb annotation
* @param type fall back type
* @return ejb reference instance
*/
private EjbReference getEjbReference(final EJB ejbAnnotation, final Class<?> type)
{
String beanInterface = ejbAnnotation.beanInterface().getName();
if (java.lang.Object.class.getName().equals(beanInterface))
{
beanInterface = type.getName();
}
return new EjbReference(ejbAnnotation.beanName(), beanInterface, ejbAnnotation.mappedName());
}
}