/*
* 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.commons.utils.PrivilegedFileHelper;
import org.exoplatform.services.jcr.dataflow.serialization.ObjectWriter;
import org.exoplatform.services.jcr.dataflow.serialization.SerializationConstants;
import org.exoplatform.services.jcr.impl.dataflow.AbstractPersistedValueData;
import org.exoplatform.services.jcr.impl.dataflow.persistent.FilePersistedValueData;
import org.exoplatform.services.jcr.impl.dataflow.persistent.StreamPersistedValueData;
import org.exoplatform.services.jcr.util.IdGenerator;
import java.io.IOException;
import java.io.InputStream;
/**
* Created by The eXo Platform SAS. <br/>
* Date:
*
* @author <a href="karpenko.sergiy@gmail.com">Karpenko Sergiy</a>
* @version $Id$
*/
public class PersistedValueDataWriter
{
/**
* Write to stream all necessary object data.
*
* @param out
* SerializationOutputStream.
* @throws IOException
* If an I/O error has occurred.
*/
public void write(ObjectWriter out, AbstractPersistedValueData vd) throws IOException
{
// write id
out.writeInt(SerializationConstants.PERSISTED_VALUE_DATA);
out.writeInt(vd.getOrderNumber());
boolean isByteArray = vd.isByteArray();
out.writeBoolean(isByteArray);
if (isByteArray)
{
byte[] data = vd.getAsByteArray();
int f = data.length;
out.writeInt(f);
out.write(data);
}
else
{
// write file content
FilePersistedValueData streamed = (FilePersistedValueData)vd;
InputStream in = null;
if (streamed.getFile() == null && vd instanceof StreamPersistedValueData)
{
if (((StreamPersistedValueData)vd).getTempFile() != null)
{
in = PrivilegedFileHelper.fileInputStream(((StreamPersistedValueData)vd).getTempFile());
}
}
else
{
in = streamed.getAsStream();
}
if (streamed.getFile() instanceof SerializationSpoolFile)
{
SerializationSpoolFile ssf = (SerializationSpoolFile)streamed.getFile();
out.writeString(ssf.getId());
out.writeLong(0);
}
else
{
// write property id - used for reread data optimization
String id = IdGenerator.generate();
out.writeString(id);
if (in == null)
{
// Deleted state usecase
out.writeLong(SerializationConstants.NULL_FILE);
}
else
{
out.writeLong(vd.getLength());
try
{
byte[] buf = new byte[SerializationConstants.INTERNAL_BUFFER_SIZE];
int l = 0;
while ((l = in.read(buf)) >= 0)
{
out.write(buf, 0, l);
}
}
finally
{
in.close();
}
}
}
}
}
}