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* JBoss, Home of Professional Open Source.
* Copyright 2010, 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.
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package org.jboss.as.ee.managedbean.processors;
import java.lang.reflect.Modifier;
import java.util.Arrays;
import java.util.List;
import javax.annotation.ManagedBean;
import org.jboss.as.ee.component.ComponentConfiguration;
import org.jboss.as.ee.component.ComponentDescription;
import org.jboss.as.ee.component.EEApplicationClasses;
import org.jboss.as.ee.component.EEModuleDescription;
import org.jboss.as.ee.component.TCCLInterceptor;
import org.jboss.as.ee.component.ViewConfiguration;
import org.jboss.as.ee.component.ViewConfigurator;
import org.jboss.as.ee.component.ViewDescription;
import org.jboss.as.ee.component.deployers.EEResourceReferenceProcessorRegistry;
import org.jboss.as.ee.component.interceptors.InterceptorOrder;
import org.jboss.as.ee.managedbean.component.ManagedBeanAssociatingInterceptorFactory;
import org.jboss.as.ee.managedbean.component.ManagedBeanCreateInterceptorFactory;
import org.jboss.as.ee.managedbean.component.ManagedBeanDestroyInterceptorFactory;
import org.jboss.as.ee.managedbean.component.ManagedBeanResourceReferenceProcessor;
import org.jboss.as.server.deployment.Attachments;
import org.jboss.as.server.deployment.DeploymentPhaseContext;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.as.server.deployment.DeploymentUnitProcessingException;
import org.jboss.as.server.deployment.DeploymentUnitProcessor;
import org.jboss.as.server.deployment.annotation.CompositeIndex;
import org.jboss.invocation.ImmediateInterceptorFactory;
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 static org.jboss.as.ee.EeLogger.ROOT_LOGGER;
import static org.jboss.as.ee.EeMessages.MESSAGES;
/**
* Deployment unit processor responsible for scanning a deployment to find classes with {@code javax.annotation.ManagedBean} annotations.
* Note: This processor only supports JSR-316 compliant managed beans. So it will not handle complimentary spec additions (ex. EJB).
*
* @author John E. Bailey
*/
public class ManagedBeanAnnotationProcessor implements DeploymentUnitProcessor {
static final DotName MANAGED_BEAN_ANNOTATION_NAME = DotName.createSimple(ManagedBean.class.getName());
/**
* Check the deployment annotation index for all classes with the @ManagedBean annotation. For each class with the
* annotation, collect all the required information to create a managed bean instance, and attach it to the context.
*
* @param phaseContext the deployment unit context
* @throws DeploymentUnitProcessingException
*
*/
public void deploy(DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
final DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
final EEResourceReferenceProcessorRegistry registry = deploymentUnit.getAttachment(org.jboss.as.ee.component.Attachments.RESOURCE_REFERENCE_PROCESSOR_REGISTRY);
final EEModuleDescription moduleDescription = deploymentUnit.getAttachment(org.jboss.as.ee.component.Attachments.EE_MODULE_DESCRIPTION);
final EEApplicationClasses applicationClasses = deploymentUnit.getAttachment(org.jboss.as.ee.component.Attachments.EE_APPLICATION_CLASSES_DESCRIPTION);
final CompositeIndex compositeIndex = deploymentUnit.getAttachment(Attachments.COMPOSITE_ANNOTATION_INDEX);
if(compositeIndex == null) {
return;
}
final List<AnnotationInstance> instances = compositeIndex.getAnnotations(MANAGED_BEAN_ANNOTATION_NAME);
if (instances == null || instances.isEmpty()) {
return;
}
for (AnnotationInstance instance : instances) {
AnnotationTarget target = instance.target();
if (!(target instanceof ClassInfo)) {
throw MESSAGES.classOnlyAnnotation("@ManagedBean", target);
}
final ClassInfo classInfo = (ClassInfo) target;
// skip if it's not a valid managed bean class
if (!assertManagedBeanClassValidity(classInfo)) {
continue;
}
final String beanClassName = classInfo.name().toString();
// Get the managed bean name from the annotation
final AnnotationValue nameValue = instance.value();
final String beanName = nameValue == null || nameValue.asString().isEmpty() ? beanClassName : nameValue.asString();
final ComponentDescription componentDescription = new ComponentDescription(beanName, beanClassName, moduleDescription, deploymentUnit.getServiceName());
// Add the view
ViewDescription viewDescription = new ViewDescription(componentDescription, beanClassName);
viewDescription.getConfigurators().addFirst(new ViewConfigurator() {
public void configure(final DeploymentPhaseContext context, final ComponentConfiguration componentConfiguration, final ViewDescription description, final ViewConfiguration configuration) throws DeploymentUnitProcessingException {
// Add MB association interceptors
final Object contextKey = new Object();
configuration.addClientPostConstructInterceptor(new ManagedBeanCreateInterceptorFactory(contextKey), InterceptorOrder.ClientPostConstruct.INSTANCE_CREATE);
final ManagedBeanAssociatingInterceptorFactory associatingInterceptorFactory = new ManagedBeanAssociatingInterceptorFactory(contextKey);
configuration.addClientInterceptor(associatingInterceptorFactory, InterceptorOrder.Client.ASSOCIATING_INTERCEPTOR);
configuration.addClientPreDestroyInterceptor(new ManagedBeanDestroyInterceptorFactory(contextKey), InterceptorOrder.ClientPreDestroy.INSTANCE_DESTROY);
configuration.addViewInterceptor(new ImmediateInterceptorFactory(new TCCLInterceptor(componentConfiguration.getModuleClassLoader())), InterceptorOrder.View.TCCL_INTERCEPTOR);
}
});
viewDescription.getBindingNames().addAll(Arrays.asList("java:module/" + beanName, "java:app/" + moduleDescription.getModuleName() + "/" + beanName));
componentDescription.getViews().add(viewDescription);
moduleDescription.addComponent(componentDescription);
// register a EEResourceReferenceProcessor which can process @Resource references to this managed bean.
registry.registerResourceReferenceProcessor(new ManagedBeanResourceReferenceProcessor(beanClassName));
}
}
public void undeploy(DeploymentUnit context) {
}
/**
* Returns true if the passed <code>managedBeanClass</code> meets the requirements set by the Managed bean spec about
* bean implementation classes. The passed <code>managedBeanClass</code> must not be an interface and must not be final or abstract.
* If it passes these requirements then this method returns true. Else it returns false.
*
* @param managedBeanClass The session bean class
* @return
*/
private static boolean assertManagedBeanClassValidity(final ClassInfo managedBeanClass) {
final short flags = managedBeanClass.flags();
final String className = managedBeanClass.name().toString();
// must *not* be a interface
if (Modifier.isInterface(flags)) {
ROOT_LOGGER.invalidManagedBeanInterface("MB.2.1.1", className);
return false;
}
// bean class must *not* be abstract or final
if (Modifier.isAbstract(flags) || Modifier.isFinal(flags)) {
ROOT_LOGGER.invalidManagedBeanAbstractOrFinal("MB.2.1.1", className);
return false;
}
// valid class
return true;
}
}