Bug 182895 Support sort on Level attribute.
Currently in OLAP engine we only support sort on level key value. We should go ahead to support sort on level attribute value.
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/olap/data/api/CubeQueryExecutorHelper.java
cube.load( stopSign );
		return cube;
	}
	
	/**
	 * 
	 * @param name
	 * @param resultSets
	 * @param writer
	 * @throws IOException
	 */
	public static void saveAggregationResultSet( IDocArchiveWriter writer, String name, IAggregationResultSet[] resultSets ) throws IOException
	{
		AggregationResultSetSaveUtil.save( name, resultSets, writer );
	}
	
	/**
	 * 
	 * @param name
	 * @param resultSets
	 * @throws IOException
	 */
	public static void saveAggregationResultSet( String pathName ,String name, IAggregationResultSet[] resultSets ) throws IOException
	{
		IDocArchiveWriter writer = new FileArchiveWriter( getTmpFileName( pathName, name ) );
		AggregationResultSetSaveUtil.save( name, resultSets, writer );
		writer.flush( );
		writer.finish( );
	}