Bug 191637 Empty cube causes error
Comment removed as requested by the submitter - 2007-06-08 droy
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/impl/dimension/Dimension.java
}
	
	public DimensionRow getDimensionRowByOffset( int offset )
			throws IOException
	{
		return hierarchy.readRowByOffset( offset );
	}
	public IDiskArray find( Level level, Object[] keyValue ) throws IOException, DataException
	{
		return level.getDiskIndex().find( keyValue );
	}
	
	public IndexKey findFirst( Level level, Object[] keyValue ) throws IOException, DataException
	{
		return level.getDiskIndex().findFirst( keyValue );
	}
	
	/**
	 * 
	 * @param level
	 * @param selections
	 * @return Dimension index array.
	 * @throws IOException 
	 * @throws DataException 
	 */
	public IDiskArray find( Level[] levels, ISelection[][] filters ) throws IOException, DataException
	{
		return DimensionFilterHelper.find( levels, filters );
	}