/*
* 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.persistent;
import org.exoplatform.services.jcr.datamodel.ValueData;
import org.exoplatform.services.jcr.impl.dataflow.AbstractPersistedValueData;
import org.exoplatform.services.jcr.impl.dataflow.TransientValueData;
import java.io.ByteArrayInputStream;
import java.io.Externalizable;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.io.OutputStream;
import java.util.Arrays;
import javax.jcr.RepositoryException;
/**
* Created by The eXo Platform SAS.
*
* @author Gennady Azarenkov
* @version $Id$
*/
public class ByteArrayPersistedValueData extends AbstractPersistedValueData implements Externalizable
{
/**
* The serialVersionUID.
*/
private static final long serialVersionUID = -9131328056670315388L;
protected byte[] data;
/**
* Empty constructor to serialization.
*/
public ByteArrayPersistedValueData()
{
super(0);
}
/**
* ByteArrayPersistedValueData constructor.
* @param orderNumber
* int
* @param data
* byte[]
*/
public ByteArrayPersistedValueData(int orderNumber, byte[] data)
{
super(orderNumber);
this.data = data;
}
/**
* {@inheritDoc}
*/
public InputStream getAsStream() throws IOException
{
return new ByteArrayInputStream(data);
}
/**
* {@inheritDoc}
*/
public byte[] getAsByteArray()
{
return data;
}
/**
* {@inheritDoc}
*/
public long getLength()
{
return data.length;
}
/**
* {@inheritDoc}
*/
public long read(OutputStream stream, long length, long position) throws IOException
{
if (position < 0)
throw new IOException("Position must be higher or equals 0. But given " + position);
if (length < 0)
throw new IOException("Length must be higher or equals 0. But given " + length);
// validation
if (position >= data.length && position > 0)
throw new IOException("Position " + position + " out of value size " + data.length);
if (position + length >= data.length)
length = data.length - position;
stream.write(data, (int)position, (int)length);
return length;
}
/**
* {@inheritDoc}
*/
public boolean isByteArray()
{
return true;
}
/**
* {@inheritDoc}
*/
public boolean equals(ValueData another)
{
if (this == another)
{
return true;
}
if (isByteArray() && another.isByteArray())
{
// by content
try
{
return Arrays.equals(getAsByteArray(), another.getAsByteArray());
}
catch (IOException e)
{
LOG.error("Read error", e);
return false;
}
}
return false;
}
/**
* {@inheritDoc}
*/
@Override
public TransientValueData createTransientCopy() throws RepositoryException
{
return new TransientValueData(orderNumber, data);
}
/**
* {@inheritDoc}
*/
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException
{
orderNumber = in.readInt();
data = new byte[in.readInt()];
if (data.length > 0) in.readFully(data);
}
/**
* {@inheritDoc}
*/
public void writeExternal(ObjectOutput out) throws IOException
{
out.writeInt(orderNumber);
out.writeInt(data.length);
out.write(data);
}
}