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.tests/test/org/eclipse/birt/data/engine/olap/api/CubeFeaturesTest.java
cqd.addBinding( binding6 );
		DataEngine engine = DataEngine.newDataEngine( DataEngineContext.newInstance( DataEngineContext.DIRECT_PRESENTATION,
				null,
				null,
				null ) );
		this.createCube( engine );
		
		try
		{
			IPreparedCubeQuery pcq = engine.prepare( cqd, null );
			ICubeQueryResults queryResults = pcq.execute( null );
			queryResults.getCubeCursor( );
			fail( "Should not arrive here");
		}
		catch ( Exception e )
		{
		}
	}
	/**
	 * Filter1, filter out all level11 == CN.
	 * @throws Exception
	 */
	public void testFilter1( ) throws Exception
	{
	
		ICubeQueryDefinition cqd = new CubeQueryDefinition( cubeName);
		IEdgeDefinition columnEdge = cqd.createEdge( ICubeQueryDefinition.COLUMN_EDGE );
		IEdgeDefinition rowEdge = cqd.createEdge( ICubeQueryDefinition.ROW_EDGE );
		IDimensionDefinition dim1 = columnEdge.createDimension( "dimension1" );
		IHierarchyDefinition hier1 = dim1.createHierarchy( "dimension1" );