/*
* 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.ItemState;
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.datamodel.IllegalPathException;
import org.exoplatform.services.jcr.datamodel.QPath;
import org.exoplatform.services.jcr.impl.Constants;
import org.exoplatform.services.jcr.impl.util.io.FileCleaner;
import java.io.EOFException;
import java.io.IOException;
import java.io.StreamCorruptedException;
/**
* Created by The eXo Platform SAS. <br/>
* Date:
*
* @author <a href="karpenko.sergiy@gmail.com">Karpenko Sergiy</a>
* @version $Id: ItemStateReader.java 111 2008-11-11 11:11:11Z serg $
*/
public class ItemStateReader
{
/**
* File cleaner.
*/
private FileCleaner fileCleaner;
/**
* Maximum buffer size.
*/
private int maxBufferSize;
/**
* Spool file holder.
*/
private ReaderSpoolFileHolder holder;
/**
* ItemStateReader constructor.
*
* @param fileCleaner
* @param maxBufferSize
* @param holder
*/
public ItemStateReader(FileCleaner fileCleaner, int maxBufferSize, ReaderSpoolFileHolder holder)
{
this.fileCleaner = fileCleaner;
this.maxBufferSize = maxBufferSize;
this.holder = holder;
}
/**
* Read and set ItemState data.
*
* @param in
* ObjectReader.
* @return ItemState object.
* @throws UnknownClassIdException
* If read Class ID is not expected or do not exist.
* @throws IOException
* If an I/O error has occurred.
*/
public ItemState read(ObjectReader in) throws UnknownClassIdException, IOException
{
// read id
int key;
if ((key = in.readInt()) != SerializationConstants.ITEM_STATE)
{
throw new UnknownClassIdException("There is unexpected class [" + key + "]");
}
ItemState is = null;
try
{
int state = in.readInt();
boolean isPersisted = in.readBoolean();
boolean eventFire = in.readBoolean();
QPath oldPath = null;
int len = in.readInt();
if (len != -1)
{
byte[] buf = new byte[len];
in.readFully(buf);
oldPath = QPath.parse(new String(buf, Constants.DEFAULT_ENCODING));
}
boolean isNodeData = in.readBoolean();
if (isNodeData)
{
PresistedNodeDataReader rdr = new PresistedNodeDataReader();
is = new ItemState(rdr.read(in), state, eventFire, null, false, isPersisted, oldPath);
}
else
{
PersistedPropertyDataReader rdr = new PersistedPropertyDataReader(fileCleaner, maxBufferSize, holder);
is = new ItemState(rdr.read(in), state, eventFire, null, false, isPersisted, oldPath);
}
return is;
}
catch (EOFException e)
{
throw new StreamCorruptedException("Unexpected EOF in middle of data block.");
}
catch (IllegalPathException e)
{
throw new IOException("Data corrupted", e);
}
}
}