/*
* 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.dataflow.PlainChangesLog;
import org.exoplatform.services.jcr.dataflow.TransactionChangesLog;
import org.exoplatform.services.jcr.dataflow.serialization.ObjectReader;
import org.exoplatform.services.jcr.dataflow.serialization.SerializationConstants;
import org.exoplatform.services.jcr.dataflow.serialization.UnknownClassIdException;
import org.exoplatform.services.jcr.impl.dataflow.SpoolConfig;
import java.io.IOException;
/**
* Created by The eXo Platform SAS. <br>Date:
*
* @author <a href="karpenko.sergiy@gmail.com">Karpenko Sergiy</a>
* @version $Id: TransactionChangesLogReader.java 111 2008-11-11 11:11:11Z serg $
*/
public class TransactionChangesLogReader
{
/**
* Spool config.
*/
private final SpoolConfig spoolConfig;
private ReaderSpoolFileHolder holder;
/**
* TransactionChangesLogReader constructor.
*/
public TransactionChangesLogReader(SpoolConfig spoolConfig, ReaderSpoolFileHolder holder)
{
this.spoolConfig = spoolConfig;
this.holder = holder;
}
/**
* Read and set TransactionChangesLog data.
*
* @param in ObjectReader.
* @return TransactionChangesLog object.
* @throws UnknownClassIdException If read Class ID is not expected or do not
* exist.
* @throws IOException If an I/O error has occurred.
*/
public TransactionChangesLog read(ObjectReader in) throws UnknownClassIdException, IOException
{
// read id
int key;
if ((key = in.readInt()) != SerializationConstants.TRANSACTION_CHANGES_LOG)
{
throw new UnknownClassIdException("There is unexpected class [" + key + "]");
}
TransactionChangesLog log = new TransactionChangesLog();
if (in.readByte() == SerializationConstants.NOT_NULL_DATA)
{
log.setSystemId(in.readString());
}
while (in.readByte() == SerializationConstants.NOT_NULL_DATA)
{
PlainChangesLogReader rdr = new PlainChangesLogReader(holder, spoolConfig);
PlainChangesLog pl = rdr.read(in);
log.addLog(pl);
}
return log;
}
}