/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation", "Tapestry"
* must not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* or "Tapestry", nor may "Apache" or "Tapestry" appear in their
* name, without prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE TAPESTRY CONTRIBUTOR COMMUNITY
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.tapestry.enhance.javassist;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.LoaderClassPath;
import javassist.NotFoundException;
import org.apache.tapestry.IResourceResolver;
import org.apache.tapestry.enhance.CodeGenerationException;
import org.apache.tapestry.enhance.EnhancedClassLoader;
import org.apache.tapestry.enhance.IEnhancedClass;
import org.apache.tapestry.enhance.IEnhancedClassFactory;
/**
* This class defines the factory for creation of new Javassist enhanced classes.
* There is typically only one object of this class in the system.
* Common functionality objects for Javassist enhancement are stored here.
*
* @author Mindbridge
* @version $Id: EnhancedClassFactory.java,v 1.1 2003/06/21 19:47:24 mindbridge Exp $
* @since 3.0
*/
public class EnhancedClassFactory implements IEnhancedClassFactory
{
private IResourceResolver _resourceResolver;
private EnhancedClassLoader _enhancedClassLoader;
private ClassPool _classPool;
private ClassMapping _typeMap = null;
public EnhancedClassFactory(IResourceResolver resourceResolver)
{
_resourceResolver = resourceResolver;
ClassLoader loader = _resourceResolver.getClassLoader();
_enhancedClassLoader = new EnhancedClassLoader(loader);
// get the default ClassPool and make sure it uses the application resource resolver
_classPool = ClassPool.getDefault();
_classPool.insertClassPath(new LoaderClassPath(loader));
}
/**
* @see org.apache.tapestry.enhance.IEnhancedClassFactory#createEnhancedClass(java.lang.String, java.lang.Class)
*/
public IEnhancedClass createEnhancedClass(String className, Class parentClass)
{
return new EnhancedClass(className, parentClass, this);
}
public ClassPool getClassPool()
{
return _classPool;
}
public ClassMapping getClassMapping()
{
if (_typeMap == null)
_typeMap = new ClassMapping(_classPool);
return _typeMap;
}
/**
* Given the java class, returns the equivalent {@link Type}. In addition,
* knows about scalar types, arrays of scalar types, java.lang.Object[] and
* java.lang.String[].
*
**/
public CtClass getObjectType(String type)
{
CtClass result = getClassMapping().getType(type);
if (result == null)
{
try
{
result = _classPool.get(type);
getClassMapping().recordType(type, result);
}
catch (NotFoundException e)
{
throw new CodeGenerationException(e);
}
}
return result;
}
/**
* @return
*/
public EnhancedClassLoader getEnhancedClassLoader()
{
return _enhancedClassLoader;
}
}