/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, 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.ejb3.deployers;
import java.io.IOException;
import java.lang.reflect.AnnotatedElement;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.jboss.deployers.spi.DeploymentException;
import org.jboss.deployers.spi.deployer.DeploymentStages;
import org.jboss.deployers.spi.deployer.helpers.AbstractDeployer;
import org.jboss.deployers.structure.spi.DeploymentUnit;
import org.jboss.deployers.vfs.spi.structure.VFSDeploymentUnit;
import org.jboss.deployment.AnnotatedClassFilter;
import org.jboss.metadata.annotation.creator.ejb.jboss.JBoss50Creator;
import org.jboss.metadata.annotation.finder.AnnotationFinder;
import org.jboss.metadata.annotation.finder.DefaultAnnotationFinder;
import org.jboss.metadata.ejb.jboss.JBossMetaData;
import org.jboss.metadata.ejb.spec.EjbJar3xMetaData;
import org.jboss.metadata.ejb.spec.EjbJarMetaData;
import org.jboss.virtual.VirtualFile;
/**
* @author <a href="mailto:cdewolf@redhat.com">Carlo de Wolf</a>
* @version $Revision: $
*/
public class EjbAnnotationMetaDataDeployer extends AbstractDeployer
{
public static final String EJB_ANNOTATED_ATTACHMENT_NAME = "annotated."+EjbJarMetaData.class.getName();
public EjbAnnotationMetaDataDeployer()
{
setStage(DeploymentStages.POST_CLASSLOADER);
addInput(EjbJarMetaData.class);
addOutput(EJB_ANNOTATED_ATTACHMENT_NAME);
}
public void deploy(DeploymentUnit unit) throws DeploymentException
{
if (unit instanceof VFSDeploymentUnit == false)
return;
VFSDeploymentUnit vfsDeploymentUnit = (VFSDeploymentUnit) unit;
deploy(vfsDeploymentUnit);
}
protected void deploy(VFSDeploymentUnit unit) throws DeploymentException
{
boolean isComplete = false;
EjbJarMetaData ejbJarMetaData = unit.getAttachment(EjbJarMetaData.class);
if(ejbJarMetaData != null && ejbJarMetaData instanceof EjbJar3xMetaData)
{
isComplete |= ((EjbJar3xMetaData) ejbJarMetaData).isMetadataComplete();
}
if(isComplete)
{
log.debug("Deployment is metadata-complete, skipping annotation processing"
+ ", ejbJarMetaData="+ejbJarMetaData);
return;
}
// why is this?
VirtualFile root = unit.getRoot();
boolean isLeaf = true;
try
{
isLeaf = root.isLeaf();
}
catch(IOException ignore)
{
// ignore
}
if(isLeaf == true)
return;
List<VirtualFile> classpath = unit.getClassPath();
if(classpath == null || classpath.isEmpty())
return;
boolean trace = log.isTraceEnabled();
if (trace)
log.trace("Deploying annotations for unit: " + unit + ", classpath: " + classpath);
try
{
processMetaData(unit, classpath);
}
catch (Exception e)
{
throw DeploymentException.rethrowAsDeploymentException("Cannot process metadata", e);
}
}
/**
* Get the classes we want to scan.
*
* @param unit the deployment unit
* @param mainClassName the main class name
* @param classpath the classpath
* @return possible classes containing metadata annotations
* @throws IOException for any error
*/
protected Collection<Class<?>> getClasses(VFSDeploymentUnit unit, List<VirtualFile> classpath) throws IOException
{
Map<VirtualFile, Class<?>> classpathClasses = new HashMap<VirtualFile, Class<?>>();
for(VirtualFile path : classpath)
{
AnnotatedClassFilter classVisitor = new AnnotatedClassFilter(unit, unit.getClassLoader(), path, null);
path.visit(classVisitor);
Map<VirtualFile, Class<?>> classes = classVisitor.getAnnotatedClasses();
if(classes != null && classes.size() > 0)
{
if(log.isTraceEnabled())
log.trace("Annotated classes: " + classes);
classpathClasses.putAll(classes);
}
}
return classpathClasses.values();
}
/**
* Process annotations.
*
* @param unit the deployment unit
* @param finder the annotation finder
* @param classes the candidate classes
*/
protected void processJBossMetaData(VFSDeploymentUnit unit, AnnotationFinder<AnnotatedElement> finder, Collection<Class<?>> classes)
{
// Create the metadata model from the annotations
JBoss50Creator creator = new JBoss50Creator(finder);
JBossMetaData annotationMetaData = creator.create(classes);
if(annotationMetaData != null)
unit.addAttachment(EJB_ANNOTATED_ATTACHMENT_NAME, annotationMetaData, JBossMetaData.class);
}
protected void processMetaData(VFSDeploymentUnit unit, List<VirtualFile> classpath) throws IOException
{
Collection<Class<?>> classes = getClasses(unit, classpath);
if(classes.size() > 0)
{
AnnotationFinder<AnnotatedElement> finder = new DefaultAnnotationFinder<AnnotatedElement>();
processJBossMetaData(unit, finder, classes);
}
}
}