/*
 * Copyright (C) 2009 eXo Platform SAS.
 *
 * 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.exoplatform.services.jcr.impl.dataflow.serialization;

import org.exoplatform.services.jcr.core.ManageableRepository;
import org.exoplatform.services.jcr.dataflow.ItemStateChangesLog;
import org.exoplatform.services.jcr.dataflow.PersistentDataManager;
import org.exoplatform.services.jcr.dataflow.TransactionChangesLog;
import org.exoplatform.services.jcr.dataflow.persistent.ItemsPersistenceListener;
import org.exoplatform.services.jcr.impl.core.SessionImpl;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by The eXo Platform SAS.
 * 
 * <br>Date: 10.01.2009
 * 
 * @author <a href="mailto:peter.nedonosko@exoplatform.com.ua">Peter Nedonosko</a>
 * @version $Id: TesterItemsPersistenceListener.java 26880 2009-01-15 08:25:32Z serg $
 */
public class TesterItemsPersistenceListener implements ItemsPersistenceListener
{

   private final List<TransactionChangesLog> logsList = new ArrayList<TransactionChangesLog>();

   private final PersistentDataManager dataManager;

   public TesterItemsPersistenceListener(SessionImpl session)
   {
      this(session, true);
   }

   public TesterItemsPersistenceListener(SessionImpl session, boolean autoRegister)
   {
      this.dataManager =
         (PersistentDataManager)((ManageableRepository)session.getRepository()).getWorkspaceContainer(
            session.getWorkspace().getName()).getComponent(PersistentDataManager.class);
      if (autoRegister)
      {
         this.dataManager.addItemPersistenceListener(this);
      }
   }

   /**
    * {@inheritDoc}
    */
   public void onSaveItems(ItemStateChangesLog itemStates)
   {
      logsList.add((TransactionChangesLog)itemStates);
   }

   /**
    * Unregister the listener and return collected changes.
    *
    * @return List of TransactionChangesLog
    */
   public List<TransactionChangesLog> pushChanges()
   {
      dataManager.removeItemPersistenceListener(this);
      return logsList;
   }

   /**
    * Returns collected changes and resets listener without unregistering
    *
    * @return List of TransactionChangesLog
    */
   public List<TransactionChangesLog> getAndReset()
   {
      List<TransactionChangesLog> logs = new ArrayList<TransactionChangesLog>(logsList);
      logsList.clear();
      return logs;
   }

   public List<TransactionChangesLog> getCurrentLogList()
   {
      return logsList;
   }

   /**
    * {@inheritDoc}
    */
   @Override
   protected void finalize() throws Throwable
   {
      logsList.clear();
   }

   /**
    * {@inheritDoc}
    */
   public boolean isTXAware()
   {
      return true;
   }
}