Bug 118592 Report error
please see attached design file.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/ResultIterator.java
* @throws DataException
	 *             if error occurs in Data Engine
	 */
	public boolean next( ) throws DataException
	{
		checkStarted( );
		boolean hasNext = false;
		try
		{
			if ( beforeFirstRow )
			{
				beforeFirstRow = false;
				hasNext = odiResult.getCurrentResult( ) != null;
			}
			else
			{
				hasNext = odiResult.next( );
			}
			if ( useDetails == false && hasNext )
			{
				savedStartingGroupLevel = odiResult.getStartingGroupLevel( );
				odiResult.last( lowestGroupLevel );
			}
		}
		catch ( DataException e )
		{
			throw e;
		}
		logger.logp( Level.FINE,
				ResultIterator.class.getName( ),