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Kernel for Resin Java Application Server
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/**
* Copyright (c) 1998-2012 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free SoftwareFoundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.loader;
import com.caucho.vfs.JarPath;
import com.caucho.vfs.Path;
/**
* Class loader specific to loading resources, not classes.
*/
public class ResourceLoader extends Loader {
// The class directory
private Path _path;
/**
* Null constructor for the resource loader.
*/
public ResourceLoader()
{
}
public ResourceLoader(ClassLoader loader)
{
super(loader);
}
/**
* Creates the resource loader with the specified path.
*
* @param path specifying the root of the resources
*/
public ResourceLoader(DynamicClassLoader loader, Path path)
{
this(loader);
setPath(path);
}
/**
* Sets the resource directory.
*/
public void setPath(Path path)
{
if (path.getPath().endsWith(".jar")
|| path.getPath().endsWith(".zip")) {
path = JarPath.create(path);
}
_path = path;
}
/**
* Gets the resource path.
*/
public Path getPath()
{
return _path;
}
/**
* Given a class or resource name, returns a patch to that resource.
*
* @param name the class or resource name.
*
* @return the path representing the class or resource.
*/
@Override
public Path getPath(String name)
{
if (name.startsWith("/"))
return _path.lookup("." + name);
else
return _path.lookup(name);
}
/**
* The class entry is always null.
*/
@Override
protected ClassEntry getClassEntry(String name, String pathName)
throws ClassNotFoundException
{
return null;
}
/**
* Returns a printable representation of the loader.
*/
@Override
public String toString()
{
return getClass().getSimpleName() + "[" + _path + "]";
}
}