/*
* 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.test.deployers.vfs.webbeans.support;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.jboss.classloading.spi.dependency.Module;
import org.jboss.classloading.spi.visitor.ClassFilter;
import org.jboss.classloading.spi.visitor.ResourceContext;
import org.jboss.classloading.spi.visitor.ResourceFilter;
import org.jboss.classloading.spi.visitor.ResourceVisitor;
import org.jboss.deployers.spi.DeploymentException;
import org.jboss.deployers.vfs.spi.deployer.AbstractOptionalVFSRealDeployer;
import org.jboss.deployers.vfs.spi.structure.VFSDeploymentUnit;
import org.jboss.virtual.VirtualFile;
/**
* WBD deployer.
*
* @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
*/
public class WebBeanDiscoveryDeployer extends AbstractOptionalVFSRealDeployer<JBossWebBeansMetaData>
{
public WebBeanDiscoveryDeployer()
{
super(JBossWebBeansMetaData.class);
addOutput(WebBeanDiscovery.class);
}
public void deploy(VFSDeploymentUnit unit, JBossWebBeansMetaData deployment) throws DeploymentException
{
VFSDeploymentUnit topUnit = unit.getTopLevel();
WebBeanDiscoveryImpl wbdi = topUnit.getAttachment(WebBeanDiscovery.class.getName(), WebBeanDiscoveryImpl.class);
if (wbdi == null)
{
wbdi = new WebBeanDiscoveryImpl();
topUnit.addAttachment(WebBeanDiscovery.class.getName(), wbdi);
}
List<URL> urls = new ArrayList<URL>();
try
{
if (deployment != null)
{
// do some custom stuff
}
Iterable<VirtualFile> classpaths = getClassPaths(unit);
for (VirtualFile cp : classpaths)
{
VirtualFile wbXml = cp.getChild("META-INF/web-beans.xml");
if (wbXml != null)
{
// add url
wbdi.addWebBeansXmlURL(wbXml.toURL());
// add classes
urls.add(cp.toURL());
}
}
// handle war slightly different
VirtualFile warWbXml = unit.getFile("WEB-INF/web-beans.xml");
if (warWbXml != null)
{
wbdi.addWebBeansXmlURL(warWbXml.toURL());
VirtualFile classes = unit.getFile("WEB-INF/classes");
if (classes != null)
urls.add(classes.toURL());
}
}
catch (Exception e)
{
throw DeploymentException.rethrowAsDeploymentException("Cannot deploy WBD.", e);
}
if (urls.isEmpty() == false)
{
Module module = unit.getAttachment(Module.class);
if (module == null)
{
VFSDeploymentUnit parent = unit.getParent();
while (parent != null && module == null)
{
module = parent.getAttachment(Module.class);
parent = parent.getParent();
}
if (module == null)
throw new DeploymentException("No module in deployment unit's hierarchy: " + unit.getName());
}
WBDiscoveryVisitor visitor = new WBDiscoveryVisitor(wbdi);
module.visit(visitor, ClassFilter.INSTANCE, null, urls.toArray(new URL[urls.size()]));
}
}
/**
* Get the matching class paths that belong to this deployment unit.
*
* @param unit the deployment unit
* @return matching class paths
* @throws Exception for any error
*/
protected Iterable<VirtualFile> getClassPaths(VFSDeploymentUnit unit) throws Exception
{
List<VirtualFile> classpath = unit.getClassPath();
if (classpath != null && classpath.isEmpty() == false)
{
List<VirtualFile> matching = new ArrayList<VirtualFile>();
VirtualFile root = unit.getRoot();
for (VirtualFile cp : classpath)
{
VirtualFile check = cp;
while (check != null && check.equals(root) == false)
check = check.getParent();
if (check != null)
matching.add(cp);
}
return matching;
}
return Collections.emptySet();
}
private class WBDiscoveryVisitor implements ResourceVisitor
{
private WebBeanDiscoveryImpl wbdi;
private WBDiscoveryVisitor(WebBeanDiscoveryImpl wbdi)
{
this.wbdi = wbdi;
}
public ResourceFilter getFilter()
{
return ClassFilter.INSTANCE;
}
public void visit(ResourceContext resource)
{
wbdi.addWebBeanClass(resource.loadClass());
}
}
}