/*
* 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.ejb3.deployment.processors;
import java.lang.reflect.Modifier;
import java.util.List;
import javax.ejb.Singleton;
import javax.ejb.Stateful;
import javax.ejb.Stateless;
import org.jboss.as.ee.metadata.MetadataCompleteMarker;
import org.jboss.as.ejb3.EjbLogger;
import org.jboss.as.ejb3.EjbMessages;
import org.jboss.as.ejb3.component.session.SessionBeanComponentDescription;
import org.jboss.as.ejb3.component.singleton.SingletonComponentDescription;
import org.jboss.as.ejb3.component.stateful.StatefulComponentDescription;
import org.jboss.as.ejb3.component.stateless.StatelessComponentDescription;
import org.jboss.as.ejb3.deployment.EjbJarDescription;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.as.server.deployment.DeploymentUnitProcessingException;
import org.jboss.as.server.deployment.EjbDeploymentMarker;
import org.jboss.as.server.deployment.annotation.CompositeIndex;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.AnnotationTarget;
import org.jboss.jandex.AnnotationValue;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import org.jboss.metadata.ejb.spec.EjbType;
import org.jboss.metadata.ejb.spec.EnterpriseBeanMetaData;
import org.jboss.metadata.ejb.spec.GenericBeanMetaData;
import org.jboss.metadata.ejb.spec.SessionBeanMetaData;
import org.jboss.metadata.ejb.spec.SessionType;
import org.jboss.msc.service.ServiceName;
import static org.jboss.as.ejb3.deployment.processors.AbstractDeploymentUnitProcessor.getEjbJarDescription;
/**
* User: jpai
*/
public class SessionBeanComponentDescriptionFactory extends EJBComponentDescriptionFactory {
private static final DotName STATELESS_ANNOTATION = DotName.createSimple(Stateless.class.getName());
private static final DotName STATEFUL_ANNOTATION = DotName.createSimple(Stateful.class.getName());
private static final DotName SINGLETON_ANNOTATION = DotName.createSimple(Singleton.class.getName());
public SessionBeanComponentDescriptionFactory(final boolean appclient) {
super(appclient);
}
/**
* Process annotations and merge any available metadata at the same time.
*/
@Override
protected void processAnnotations(final DeploymentUnit deploymentUnit, final CompositeIndex compositeIndex) throws DeploymentUnitProcessingException {
if (MetadataCompleteMarker.isMetadataComplete(deploymentUnit)) {
return;
}
// Find and process any @Stateless bean annotations
final List<AnnotationInstance> slsbAnnotations = compositeIndex.getAnnotations(STATELESS_ANNOTATION);
if (!slsbAnnotations.isEmpty()) {
processSessionBeans(deploymentUnit, slsbAnnotations, SessionBeanComponentDescription.SessionBeanType.STATELESS);
}
// Find and process any @Stateful bean annotations
final List<AnnotationInstance> sfsbAnnotations = compositeIndex.getAnnotations(STATEFUL_ANNOTATION);
if (!sfsbAnnotations.isEmpty()) {
processSessionBeans(deploymentUnit, sfsbAnnotations, SessionBeanComponentDescription.SessionBeanType.STATEFUL);
}
// Find and process any @Singleton bean annotations
final List<AnnotationInstance> sbAnnotations = compositeIndex.getAnnotations(SINGLETON_ANNOTATION);
if (!sbAnnotations.isEmpty()) {
processSessionBeans(deploymentUnit, sbAnnotations, SessionBeanComponentDescription.SessionBeanType.SINGLETON);
}
}
@Override
protected void processBeanMetaData(final DeploymentUnit deploymentUnit, final EnterpriseBeanMetaData enterpriseBeanMetaData) throws DeploymentUnitProcessingException {
if (enterpriseBeanMetaData.isSession()) {
assert enterpriseBeanMetaData instanceof SessionBeanMetaData : enterpriseBeanMetaData + " is not a SessionBeanMetaData";
processSessionBeanMetaData(deploymentUnit, (SessionBeanMetaData) enterpriseBeanMetaData);
}
}
private void processSessionBeans(final DeploymentUnit deploymentUnit, final List<AnnotationInstance> sessionBeanAnnotations, final SessionBeanComponentDescription.SessionBeanType annotatedSessionBeanType) {
final EjbJarDescription ejbJarDescription = getEjbJarDescription(deploymentUnit);
final ServiceName deploymentUnitServiceName = deploymentUnit.getServiceName();
// process these session bean annotations and create component descriptions out of it
for (final AnnotationInstance sessionBeanAnnotation : sessionBeanAnnotations) {
final AnnotationTarget target = sessionBeanAnnotation.target();
if (!(target instanceof ClassInfo)) {
// Let's just WARN and move on. No need to throw an error
EjbMessages.MESSAGES.annotationOnlyAllowedOnClass(sessionBeanAnnotation.name().toString(), target);
continue;
}
final ClassInfo sessionBeanClassInfo = (ClassInfo) target;
// skip if it's not a valid class for session bean
if (!assertSessionBeanClassValidity(sessionBeanClassInfo)) {
continue;
}
final String ejbName = sessionBeanClassInfo.name().local();
final AnnotationValue nameValue = sessionBeanAnnotation.value("name");
final String beanName = nameValue == null || nameValue.asString().isEmpty() ? ejbName : nameValue.asString();
final SessionBeanMetaData beanMetaData = getEnterpriseBeanMetaData(deploymentUnit, beanName, SessionBeanMetaData.class);
final SessionBeanComponentDescription.SessionBeanType sessionBeanType;
final String beanClassName;
if (beanMetaData != null) {
beanClassName = override(sessionBeanClassInfo.name().toString(), beanMetaData.getEjbClass());
sessionBeanType = override(annotatedSessionBeanType, descriptionOf(((SessionBeanMetaData) beanMetaData).getSessionType()));
} else {
beanClassName = sessionBeanClassInfo.name().toString();
sessionBeanType = annotatedSessionBeanType;
}
final SessionBeanComponentDescription sessionBeanDescription;
switch (sessionBeanType) {
case STATELESS:
sessionBeanDescription = new StatelessComponentDescription(beanName, beanClassName, ejbJarDescription, deploymentUnitServiceName, beanMetaData);
break;
case STATEFUL:
sessionBeanDescription = new StatefulComponentDescription(beanName, beanClassName, ejbJarDescription, deploymentUnitServiceName, beanMetaData);
break;
case SINGLETON:
sessionBeanDescription = new SingletonComponentDescription(beanName, beanClassName, ejbJarDescription, deploymentUnitServiceName, beanMetaData);
break;
default:
throw EjbMessages.MESSAGES.unknownSessionBeanType(sessionBeanType.name());
}
addComponent(deploymentUnit, sessionBeanDescription);
}
EjbDeploymentMarker.mark(deploymentUnit);
}
private static SessionBeanComponentDescription.SessionBeanType descriptionOf(final SessionType sessionType) {
if (sessionType == null)
return null;
switch (sessionType) {
case Stateless:
return SessionBeanComponentDescription.SessionBeanType.STATELESS;
case Stateful:
return SessionBeanComponentDescription.SessionBeanType.STATEFUL;
case Singleton:
return SessionBeanComponentDescription.SessionBeanType.SINGLETON;
default:
throw EjbMessages.MESSAGES.unknownSessionBeanType(sessionType.name());
}
}
/**
* Returns true if the passed <code>sessionBeanClass</code> meets the requirements set by the EJB3 spec about
* bean implementation classes. The passed <code>sessionBeanClass</code> must not be an interface and must be public
* and not final and not abstract. If it passes these requirements then this method returns true. Else it returns false.
*
* @param sessionBeanClass The session bean class
* @return
*/
private static boolean assertSessionBeanClassValidity(final ClassInfo sessionBeanClass) {
final short flags = sessionBeanClass.flags();
final String className = sessionBeanClass.name().toString();
// must *not* be a interface
if (Modifier.isInterface(flags)) {
EjbLogger.EJB3_LOGGER.sessionBeanClassCannotBeAnInterface(className);
return false;
}
// bean class must be public, must *not* be abstract or final
if (!Modifier.isPublic(flags) || Modifier.isAbstract(flags) || Modifier.isFinal(flags)) {
EjbLogger.EJB3_LOGGER.sessionBeanClassMustBePublicNonAbstractNonFinal(className);
return false;
}
// valid class
return true;
}
private void processSessionBeanMetaData(final DeploymentUnit deploymentUnit, final SessionBeanMetaData sessionBean) throws DeploymentUnitProcessingException {
final EjbJarDescription ejbJarDescription = getEjbJarDescription(deploymentUnit);
final CompositeIndex compositeIndex = deploymentUnit.getAttachment(org.jboss.as.server.deployment.Attachments.COMPOSITE_ANNOTATION_INDEX);
final String beanName = sessionBean.getName();
SessionType sessionType = sessionBean.getSessionType();
if (sessionType == null && sessionBean instanceof GenericBeanMetaData) {
final GenericBeanMetaData bean = (GenericBeanMetaData) sessionBean;
if (bean.getEjbType() == EjbType.SESSION) {
sessionType = determineSessionType(sessionBean.getEjbClass(), compositeIndex);
if (sessionType == null) {
throw EjbMessages.MESSAGES.sessionTypeNotSpecified(beanName);
}
} else {
//it is not a session bean, so we ignore it
return;
}
} else if (sessionType == null) {
sessionType = determineSessionType(sessionBean.getEjbClass(), compositeIndex);
if (sessionType == null) {
throw EjbMessages.MESSAGES.sessionTypeNotSpecified(beanName);
}
}
final String beanClassName = sessionBean.getEjbClass();
final SessionBeanComponentDescription sessionBeanDescription;
switch (sessionType) {
case Stateless:
sessionBeanDescription = new StatelessComponentDescription(beanName, beanClassName, ejbJarDescription, deploymentUnit.getServiceName(), sessionBean);
break;
case Stateful:
sessionBeanDescription = new StatefulComponentDescription(beanName, beanClassName, ejbJarDescription, deploymentUnit.getServiceName(), sessionBean);
break;
case Singleton:
sessionBeanDescription = new SingletonComponentDescription(beanName, beanClassName, ejbJarDescription, deploymentUnit.getServiceName(), sessionBean);
break;
default:
throw EjbMessages.MESSAGES.unknownSessionBeanType(sessionType.name());
}
addComponent(deploymentUnit, sessionBeanDescription);
}
private SessionType determineSessionType(final String ejbClass, final CompositeIndex compositeIndex) {
if(ejbClass == null) {
return null;
}
final ClassInfo info = compositeIndex.getClassByName(DotName.createSimple(ejbClass));
if (info == null) {
return null;
}
if(info.annotations().get(STATEFUL_ANNOTATION) != null) {
return SessionType.Stateful;
} else if(info.annotations().get(STATELESS_ANNOTATION) != null) {
return SessionType.Stateless;
} else if(info.annotations().get(SINGLETON_ANNOTATION) != null) {
return SessionType.Singleton;
}
return null;
}
}