/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, 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.ejb.plugins.cmp.jdbc2.schema;
import javax.transaction.Transaction;
/**
* @author <a href="mailto:alex@jboss.org">Alexey Loubyansky</a>
* @version <tt>$Revision: 81030 $</tt>
*/
public interface Cache
{
class RemoveException extends RuntimeException
{
public RemoveException()
{
}
public RemoveException(String message)
{
super(message);
}
public RemoveException(Throwable cause)
{
super(cause);
}
public RemoveException(String message, Throwable cause)
{
super(message, cause);
}
}
void lock();
void lock(Object key);
void unlock();
void unlock(Object key);
Object[] getFields(Object pk);
Object[] getRelations(Object pk);
void put(Transaction tx, Object pk, Object[] fields, Object[] relations);
void remove(Transaction tx, Object pk) throws RemoveException;
boolean contains(Transaction tx, Object pk);
void lockForUpdate(Transaction tx, Object pk) throws Exception;
void releaseLock(Transaction tx, Object pk) throws Exception;
void flush();
Cache NONE = new Cache()
{
public void lock()
{
}
public void lock(Object key)
{
}
public void unlock()
{
}
public void unlock(Object key)
{
}
public Object[] getFields(Object pk)
{
return null;
}
public Object[] getRelations(Object pk)
{
return null;
}
public void put(Transaction tx, Object pk, Object[] fields, Object[] relations)
{
}
public void remove(Transaction tx, Object pk)
{
}
public boolean contains(Transaction tx, Object pk)
{
return false;
}
public void lockForUpdate(Transaction tx, Object pk) throws Exception
{
}
public void releaseLock(Transaction tx, Object pk) throws Exception
{
}
public void flush()
{
}
};
interface CacheLoader
{
Object loadFromCache(Object value);
Object getCachedValue();
}
interface Listener
{
void contention(int partitionIndex, long time);
void eviction(int partitionIndex, Object pk, int size);
void hit(int partitionIndex);
void miss(int partitionIndex);
public Listener NOOP = new Listener()
{
public void contention(int partitionIndex, long time)
{
}
public void eviction(int partitionIndex, Object pk, int size)
{
}
public void hit(int partitionIndex)
{
}
public void miss(int partitionIndex)
{
}
};
}
}