/*
* module: pip/java/packing -- Strategy objects for converting
* Java objects to and from stored data.
*
* Copyright (C) 1997 Pharos IP Pty Ltd
* $Id: RawPacking.java,v 1.3 1997-10-23 21:09:59+10 mbp Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package au.com.pharos.packing;
/** A packing strategy which stores only raw arrays of bytes. Other
* objects cannot be stored using this strategy.
*
* @author Martin Pool
* @version $Revision: 1.3 $
**/
public class RawPacking extends Packing implements java.io.Serializable
{
/** Perform the trivial packing case, casting an array of bytes
* into the same.
*
* @throw IllegalArgumentException if obj is neith null nor
* an array of bytes.
*/
public byte[] toBytes(Object obj) throws IllegalArgumentException
{
if (obj == null)
return null;
else if (obj instanceof byte[])
return (byte[]) obj;
else
throw cantConvert(obj);
}
/** Performs the trivial unpacking case of returning raw
* untouched.
*
* @return either null or raw; always assignable to
* byte[]
**/
public Object fromBytes(byte[] raw)
{
return raw;
}
}