/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, 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.classpool.domain;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.NotFoundException;
import org.jboss.classpool.base.BaseClassPool;
import org.jboss.classpool.plugins.DelegatingClassPool;
import org.jboss.logging.Logger;
/**
*
* @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
* @version $Revision: 99001 $
*/
public abstract class AbstractClassPoolDomain implements ClassPoolDomain
{
protected final Logger logger = Logger.getLogger(this.getClass());
protected abstract CtClass getCachedOrCreateFromParent(DelegatingClassPool initiatingPool, String classname, String resourceName, boolean create, boolean trace);
protected CtClass getCachedOrCreateFromPoolParent(DelegatingClassPool initiatingPool, String classname, boolean create, boolean trace)
{
if (initiatingPool == null)
{
if (trace) logger.trace(this + " get cached or create " + classname + " from pool parent - no initiating pool");
return null;
}
ClassPool parentPool = initiatingPool.getParent();
if (parentPool == null)
{
if (trace) logger.trace(this + " get cached or create " + classname + " from pool parent - no parent pool");
return null;
}
return getCachedOrCreateFromPool(parentPool, classname, create, trace);
}
protected CtClass getCachedOrCreateFromPool(ClassPool pool, String classname, boolean create, boolean trace)
{
if (pool instanceof BaseClassPool)
{
return getCachedOrCreateFromPool((BaseClassPool)pool, classname, create, trace);
}
try
{
//This will check the parents
if (trace) logger.trace(this + " get cached or create " + classname + " from non-BaseClassPool pool " + pool);
CtClass clazz = pool.get(classname);
if (trace) logger.trace(this + " got cached or create " + classname + " from non-BaseClassPool pool " + clazz.getClassPool());
return clazz;
}
catch(NotFoundException e)
{
return null;
}
}
protected CtClass getCachedOrCreateFromPool(BaseClassPool pool, String classname, boolean create, boolean trace)
{
if (pool == null)
{
if (trace) logger.trace(this + " get cached or create " + classname + " from BaseClassPool - no pool");
return null;
}
CtClass clazz = null;
if (clazz == null)
{
//We can use the exposed methods directly to avoid the overhead of NotFoundException
if (trace) logger.trace(this + " get cached or create " + classname + " from BaseClassPool - checking cache");
clazz = pool.getCached(classname);
if (clazz == null && create)
{
if (trace) logger.trace(this + " get cached or create " + classname + " from BaseClassPool - creating");
clazz = pool.createCtClass(classname, true);
}
}
return clazz;
}
}