/*
* 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.plugins.annotations;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import javassist.ClassPath;
import javassist.NotFoundException;
import org.jboss.classloader.plugins.ClassLoaderUtils;
import org.jboss.classloader.spi.filter.ClassFilter;
import org.jboss.classloader.spi.filter.ClassFilterUtils;
import org.jboss.deployers.vfs.spi.structure.VFSDeploymentUnit;
import org.jboss.util.collection.SoftValueHashMap;
import org.jboss.vfs.VirtualFile;
import org.jboss.classloader.plugins.filter.JavaOnlyClassFilter;
/**
* Javassist ClassPath impl based on deployment unit
*
* @author <a href="mailto:ales.justin@jboss.com">Ales Justin</a>
*/
public class DeploymentUnitClassPath implements ClassPath
{
private VFSDeploymentUnit unit;
@SuppressWarnings("unchecked")
private Map<String, VirtualFile> cache = Collections.synchronizedMap(new SoftValueHashMap());
/** By default exclude jdk classes */
private ClassFilter excludeFilter = ClassFilterUtils.JAVA_ONLY;
public DeploymentUnitClassPath(VFSDeploymentUnit unit)
{
if (unit == null)
throw new IllegalArgumentException("Null deployment unit.");
this.unit = unit;
}
/**
* Set exclude filter.
*
* @param excludeFilter the exclude filter
*/
public void setExcludeFilter(ClassFilter excludeFilter)
{
this.excludeFilter = excludeFilter;
}
/**
* Find file.
*
* @param className the classname we're looking for
* @return virtual file or null if not found
* @throws IOException for any exception
*/
protected VirtualFile findFile(String className) throws IOException
{
if (excludeFilter != null && excludeFilter.matchesClassName(className))
return null;
VirtualFile file = cache.get(className);
if (file != null)
return file;
List<VirtualFile> classPath = unit.getClassPath();
if (classPath != null && classPath.isEmpty() == false)
{
String path = ClassLoaderUtils.classNameToPath(className);
for (VirtualFile cp : classPath)
{
file = cp.getChild(path);
if (file.exists())
{
cache.put(className, file);
return file;
}
}
}
return null;
}
public InputStream openClassfile(String className) throws NotFoundException
{
try
{
VirtualFile file = findFile(className);
if (file != null)
return file.openStream();
}
catch (IOException e)
{
throw new NotFoundException("Exception finding file: " + className, e);
}
throw new NotFoundException("ClassName '" + className + "' not found in deployment unit: " + unit);
}
public URL find(String className)
{
try
{
VirtualFile file = findFile(className);
if (file != null)
return file.toURL();
}
catch (Exception ignored)
{
}
return null;
}
public void close()
{
cache.clear();
}
}