/*
* 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.dataflow;
import org.exoplatform.services.jcr.datamodel.IllegalPathException;
import org.exoplatform.services.jcr.datamodel.ItemType;
import org.exoplatform.services.jcr.datamodel.NodeData;
import org.exoplatform.services.jcr.datamodel.QPathEntry;
import org.exoplatform.services.jcr.impl.Constants;
import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.ArrayList;
import java.util.List;
/**
* Created by The eXo Platform SAS.
*
* @author Gennady Azarenkov
* @version $Id: TransactionChangesLog.java 11907 2008-03-13 15:36:21Z ksm $
*/
public class TransactionChangesLog implements CompositeChangesLog, Externalizable
{
private static final Log LOG = ExoLogger.getLogger("exo.jcr.component.core.TransactionChangesLog");
private static final long serialVersionUID = 4866736965040228027L;
protected String systemId;
protected List<PlainChangesLog> changesLogs;
public TransactionChangesLog()
{
changesLogs = new ArrayList<PlainChangesLog>();
}
public TransactionChangesLog(PlainChangesLog changesLog)
{
changesLogs = new ArrayList<PlainChangesLog>();
changesLogs.add(changesLog);
}
/**
* {@inheritDoc}
*/
public void addLog(PlainChangesLog log)
{
changesLogs.add(log);
}
/**
* {@inheritDoc}
*/
public void removeLog(PlainChangesLog log)
{
changesLogs.remove(log);
}
/**
* {@inheritDoc}
*/
public ChangesLogIterator getLogIterator()
{
return new ChangesLogIterator(changesLogs);
}
/**
* {@inheritDoc}
*/
public List<ItemState> getAllStates()
{
List<ItemState> states = new ArrayList<ItemState>();
for (PlainChangesLog changesLog : changesLogs)
{
for (ItemState state : changesLog.getAllStates())
{
states.add(state);
}
}
return states;
}
/**
* {@inheritDoc}
*/
public int getSize()
{
int size = 0;
for (PlainChangesLog changesLog : changesLogs)
{
size += changesLog.getSize();
}
return size;
}
/**
* {@inheritDoc}
*/
public String getSystemId()
{
return systemId;
}
/**
* setSystemId.
*
* @param systemId
*/
public void setSystemId(String systemId)
{
this.systemId = systemId;
}
public ItemState getItemState(String itemIdentifier)
{
ItemState state;
for (int i = changesLogs.size() - 1; i >= 0; i--)
{
PlainChangesLog changesLog = changesLogs.get(i);
state = ((PlainChangesLogImpl)changesLog).getItemState(itemIdentifier);
if (state != null)
{
return state;
}
}
return null;
}
public ItemState getItemState(NodeData parentData, QPathEntry name, ItemType itemType)
{
ItemState state;
for (int i = changesLogs.size() - 1; i >= 0; i--)
{
PlainChangesLog changesLog = changesLogs.get(i);
try
{
state = ((PlainChangesLogImpl)changesLog).getItemState(parentData, name, itemType);
if (state != null)
{
return state;
}
}
catch (IllegalPathException e)
{
if (LOG.isTraceEnabled())
{
LOG.trace("An exception occurred: " + e.getMessage());
}
}
}
return null;
}
public List<ItemState> getChildrenChanges(String rootIdentifier, boolean forNodes)
{
List<ItemState> list = new ArrayList<ItemState>();
for (PlainChangesLog changesLog : changesLogs)
{
List<ItemState> subList = ((PlainChangesLogImpl)changesLog).getChildrenChanges(rootIdentifier, forNodes);
list.addAll(subList);
}
return list;
}
public String dump()
{
StringBuilder str = new StringBuilder("ChangesLog: size").append(changesLogs.size()).append("\n ");
for (PlainChangesLog cLog : changesLogs)
{
str.append(cLog.dump()).append("\n");
}
return str.toString();
}
// Need for Externalizable
// ------------------ [ BEGIN ] ------------------
/**
* {@inheritDoc}
*/
public void writeExternal(ObjectOutput out) throws IOException
{
// write -1 if systemId == null
// write 1 if systemId != null
if (systemId != null)
{
out.writeInt(1);
byte[] buff = systemId.getBytes(Constants.DEFAULT_ENCODING);
out.writeInt(buff.length);
out.write(buff);
}
else
{
out.writeInt(-1);
}
int listSize = changesLogs.size();
out.writeInt(listSize);
for (int i = 0; i < listSize; i++)
{
out.writeObject(changesLogs.get(i));
}
}
/**
* {@inheritDoc}
*/
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
{
if (in.readInt() == 1)
{
byte[] buf = new byte[in.readInt()];
in.readFully(buf);
systemId = new String(buf, Constants.DEFAULT_ENCODING);
}
int listSize = in.readInt();
for (int i = 0; i < listSize; i++)
{
changesLogs.add((PlainChangesLog)in.readObject());
}
}
// ------------------ [ END ] ------------------
}