OriginalWithDerivativesBitstreamFilter.java

/*
 * OriginalWithDerivativesBitstreamFilter.java
 *
 * Version: $Revision: 3984 $
 *
 * Date: $Date: 2009-06-29 22:33:25 -0400 (Mon, 29 Jun 2009) $
 *
 * Copyright (c) 2002-2009, The DSpace Foundation.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the DSpace Foundation nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package org.dspace.app.itemupdate;

import java.sql.SQLException;
import org.dspace.content.Bitstream;
import org.dspace.content.Bundle;

/** 
 * 		Filter all bitstreams in the ORIGINAL bundle
 *      Also delete all derivative bitstreams, i.e.
 *      all bitstreams in the TEXT and THUMBNAIL bundles
 */
public class OriginalWithDerivativesBitstreamFilter extends BitstreamFilter 
{
	private String[] bundlesToEmpty = { "ORIGINAL", "TEXT", "THUMBNAIL" };	
	
	public OriginalWithDerivativesBitstreamFilter()
	{
		//empty
	}
	
	/**
	 * 	Tests bitstream for membership in specified bundles (ORIGINAL, TEXT, THUMBNAIL)
	 * 
	 * @param bitstream
	 * @throws BitstreamFilterException
	 * @returns true if bitstream is in specified bundles
	 */
	public boolean accept(Bitstream bitstream) 
	throws BitstreamFilterException
	{		
		try
		{
			Bundle[] bundles = bitstream.getBundles();
			for (Bundle b : bundles)
			{
				for (String bn : bundlesToEmpty)
				{
					if (b.getName().equals(bn))
					{
						return true;
					}
				}
			}		
		}
		catch(SQLException e)
		{
			throw new BitstreamFilterException(e);
		}
		return false;
	}

}