/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package com.sun.jersey.server.impl.ejb;
import com.sun.jersey.api.model.AbstractResource;
import com.sun.jersey.api.model.AbstractResourceMethod;
import com.sun.jersey.spi.container.JavaMethodInvoker;
import com.sun.jersey.spi.container.ResourceMethodCustomInvokerDispatchFactory;
import com.sun.jersey.spi.container.ResourceMethodDispatchProvider;
import com.sun.jersey.spi.dispatch.RequestDispatcher;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.Local;
import javax.ejb.Remote;
import javax.ejb.Stateful;
import javax.ejb.Stateless;
import javax.ws.rs.core.Context;
/**
*
* @author japod
*/
public class EJBRequestDispatcherProvider implements ResourceMethodDispatchProvider {
@Context
ResourceMethodCustomInvokerDispatchFactory rdFactory;
@Override
public RequestDispatcher create(AbstractResourceMethod abstractResourceMethod) {
final AbstractResource declaringResource = abstractResourceMethod.getDeclaringResource();
if (isSessionBean(declaringResource)) {
final Class<?> resourceClass = declaringResource.getResourceClass();
final Method javaMethod = abstractResourceMethod.getMethod();
for (Class iFace: remoteAndLocalIfaces(resourceClass)) {
try {
final Method iFaceMethod = iFace.getDeclaredMethod(javaMethod.getName(), javaMethod.getParameterTypes());
if (iFaceMethod != null) {
return createDispatcher(abstractResourceMethod, iFaceMethod);
}
} catch (NoSuchMethodException ex) {
} catch (SecurityException ex) {
Logger.getLogger(EJBRequestDispatcherProvider.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
return null;
}
private List<Class> remoteAndLocalIfaces(final Class<?> resourceClass) {
final List<Class> allLocalOrRemoteIfaces = new LinkedList<Class>();
if (resourceClass.isAnnotationPresent(Remote.class)) {
allLocalOrRemoteIfaces.addAll(Arrays.asList(resourceClass.getAnnotation(Remote.class).value()));
}
if (resourceClass.isAnnotationPresent(Local.class)) {
allLocalOrRemoteIfaces.addAll(Arrays.asList(resourceClass.getAnnotation(Local.class).value()));
}
for (Class<?> i : resourceClass.getInterfaces()) {
if (i.isAnnotationPresent(Remote.class) || i.isAnnotationPresent(Local.class)) {
allLocalOrRemoteIfaces.add(i);
}
}
return allLocalOrRemoteIfaces;
}
private RequestDispatcher createDispatcher(AbstractResourceMethod abstractResourceMethod, final Method iFaceMethod) {
return rdFactory.getDispatcher(abstractResourceMethod, new JavaMethodInvoker() {
@Override
public Object invoke(Method m, Object o, Object... parameters) throws InvocationTargetException, IllegalAccessException {
return iFaceMethod.invoke(o, parameters);
}
});
}
private boolean isSessionBean(AbstractResource ar) {
return ar.isAnnotationPresent(Stateless.class) || ar.isAnnotationPresent(Stateful.class);
}
}