/*
* JBoss, Home of Professional Open Source
* Copyright 2006, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.deployers.vfs.spi.structure.helpers;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import org.jboss.classloading.spi.metadata.ClassLoadingMetaData;
import org.jboss.deployers.spi.DeploymentException;
import org.jboss.deployers.structure.spi.DeploymentUnit;
import org.jboss.deployers.structure.spi.DeploymentUnitVisitor;
import org.jboss.deployers.vfs.spi.structure.VFSDeploymentUnit;
import org.jboss.virtual.VirtualFile;
/**
* Collects all the classpath elements
*
* @author <a href="adrian@jboss.com">Adrian Brock</a>
* @version $Revision: 1.1 $
*/
public class ClassPathVisitor implements DeploymentUnitVisitor
{
/** The initial deployment unit */
private DeploymentUnit initial;
/** The full classpath */
private Set<VirtualFile> classPath = new LinkedHashSet<VirtualFile>();
/**
* Create a new ClassPathVisitor.
*/
@Deprecated // pass the initial unit to weed subdeployments with their own classloader
public ClassPathVisitor()
{
}
/**
* Create a new ClassPathVisitor.
*
* @param initial the initial unit
*/
public ClassPathVisitor(DeploymentUnit initial)
{
if (initial == null)
throw new IllegalArgumentException("Null initial");
this.initial = initial;
}
/**
* Get the full classpath after the visit
*
* @return the full classpath
*/
public Set<VirtualFile> getClassPath()
{
return classPath;
}
public void visit(DeploymentUnit unit) throws DeploymentException
{
if (unit instanceof VFSDeploymentUnit == false)
return;
// This part of the deployment wants its own classloader
if (unit != initial && unit.getAttachment(ClassLoadingMetaData.class) != null)
return;
VFSDeploymentUnit vfsUnit = (VFSDeploymentUnit) unit;
List<VirtualFile> paths = vfsUnit.getClassPath();
if (paths != null)
classPath.addAll(paths);
}
public void error(DeploymentUnit context)
{
// nothing
}
}