/******************************************************************************
* JBoss, a division of Red Hat *
* Copyright 2006, Red Hat Middleware, LLC, 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.gatein.pc.portlet.impl.state.consumer;
import org.gatein.pc.portlet.state.consumer.ConsumerPersistenceManager;
import org.gatein.pc.portlet.state.consumer.ConsumerStateContext;
import org.gatein.pc.portlet.state.consumer.ConsumerState;
import org.gatein.pc.portlet.state.NoSuchStateException;
import org.gatein.pc.portlet.state.InvalidStateIdException;
import java.io.Serializable;
/**
* @author <a href="mailto:julien@jboss.org">Julien Viet</a>
* @version $Revision: 1.1 $
*/
public abstract class AbstractConsumerPersistenceManagerService<S extends Serializable> implements ConsumerPersistenceManager<S>
{
/** . */
private int counter = 0;
protected abstract ConsumerStateContext<S> get(String stateId);
protected abstract void put(String stateId, ConsumerStateContext<S> state);
protected abstract void remove(String stateId);
protected abstract int size();
public synchronized ConsumerStateContext<S> loadState(String stateId) throws IllegalArgumentException, NoSuchStateException, InvalidStateIdException
{
checkId(stateId);
ConsumerStateContext<S> state = get(stateId);
if (state == null)
{
throw new NoSuchStateException(stateId);
}
return state;
}
public synchronized String createState(ConsumerState<S> state) throws IllegalArgumentException
{
if (state == null)
{
throw new IllegalArgumentException();
}
ConsumerStateContext<S> ctx = new ConsumerStateContext<S>(Integer.toString(counter++), state.getPortletId(), state.getStateType(), state.getState());
put(ctx.getId(), ctx);
return ctx.getId();
}
public synchronized void updateState(String stateId, ConsumerState<S> state) throws IllegalArgumentException, NoSuchStateException, InvalidStateIdException
{
checkId(stateId);
if (state == null)
{
throw new IllegalArgumentException();
}
if (get(stateId) == null)
{
throw new NoSuchStateException(stateId);
}
//
put(stateId, new ConsumerStateContext<S>(stateId, state.getPortletId(), state.getStateType(), state.getState()));
}
public synchronized void destroyState(String stateId) throws IllegalArgumentException, NoSuchStateException, InvalidStateIdException
{
checkId(stateId);
if (get(stateId) != null)
{
throw new NoSuchStateException(stateId);
}
//
remove(stateId);
}
public synchronized int getSize()
{
return size();
}
private void checkId(String stateId) throws IllegalArgumentException, InvalidStateIdException
{
if (stateId == null)
{
throw new IllegalArgumentException("No null state id accepted");
}
try
{
Integer.parseInt(stateId);
}
catch (NumberFormatException e)
{
throw new InvalidStateIdException(e, stateId);
}
}
}