org.glassfish.ejb.deployment.annotation.handlers.BeforeCompletionHandler Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of payara-micro Show documentation
Micro Distribution of the Payara Project for IBM JDK
There is a newer version: 4.1.2.181
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2012 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
 * https://glassfish.dev.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 org.glassfish.ejb.deployment.annotation.handlers;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.logging.Level;
import javax.ejb.BeforeCompletion;
import javax.ejb.Stateful;

import com.sun.enterprise.deployment.MethodDescriptor;
import com.sun.enterprise.deployment.annotation.context.EjbContext;
import org.glassfish.apf.AnnotationHandlerFor;
import org.glassfish.apf.AnnotationInfo;
import org.glassfish.apf.AnnotationProcessorException;
import org.glassfish.apf.HandlerProcessingResult;
import org.glassfish.ejb.deployment.descriptor.EjbSessionDescriptor;
import org.jvnet.hk2.annotations.Service;

/**
 * This handler is responsible for handling the javax.ejb.BeforeCompletion
 * annotation on a Bean method.
 *
 * @author Marina Vatkina
 */
@Service
@AnnotationHandlerFor(BeforeCompletion.class)
public class BeforeCompletionHandler extends AbstractAttributeHandler {

    public BeforeCompletionHandler() {
    }

    protected HandlerProcessingResult processAnnotation(AnnotationInfo ainfo,
            EjbContext[] ejbContexts) throws AnnotationProcessorException {
        
        for (EjbContext ejbContext : ejbContexts) {
            EjbSessionDescriptor ejbDesc = 
                    (EjbSessionDescriptor) ejbContext.getDescriptor();

            Method annMethod = (Method) ainfo.getAnnotatedElement();
            checkValid(annMethod);
            if (logger.isLoggable(Level.FINE)) {
                logger.fine("Setting BeforeCompletion method " + annMethod);
            }

            ejbDesc.setBeforeCompletionMethodIfNotSet(new MethodDescriptor(annMethod));
        }

        return getDefaultProcessedResult();
    }

    /**
     * @return an array of annotation types this annotation handler would 
     * require to be processed (if present) before it processes it's own 
     * annotation type.
     */
    public Class[] getTypeDependencies() {
        
        return new Class[] { Stateful.class};
                
    }

    protected boolean supportTypeInheritance() {
        return true;
    }

    /**
     * Verify that the return type is void and it's a no-arg method
     */
    private void checkValid(Method m) throws AnnotationProcessorException {
        if ( !(m.getReturnType().equals(Void.TYPE) &&
                m.getParameterTypes().length == 0) ) {
            throw new AnnotationProcessorException("Method " + m +
                    "annotated as @BeforeCompletion is not valid");
        }
    }

}