Bug 132515 Expression like "Toltal.rank(Tolta.ave(row[a]),ture,Null,1)" is return an error
Description: Add an expression like "Toltal.rank(Tolta.ave(row[a]),ture,Null,1)" is return an error.The nesting "Toltal" seem not to be work. Step to reproduce: 1.new a datasource and dataset 2.drag the dataset to layout veiw for a table 3.set a group on the table 4.Insert a data into the group header with the expression e.g. "Toltal.rank(Tolta.ave(row[a]),ture,Null,1)" Actual result: An error was thrown out Expected result: It should work correctly in order to support some requirments
data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/impl/QueryExecutor.java
int sortIndex = -1;
					String sortKey = src.getColumn( );
					if ( sortKey == null )
						sortKey = src.getExpression( ).getText( );
					else
					{
						sortKey = getColumnRefExpression( sortKey );
					}
					temporaryComputedColumns.add( new ComputedColumn( "_{$TEMP_SORT_"
							+ i + "$}_",
							sortKey,
							DataType.ANY_TYPE ) );
					sortIndex = -1;
					sortKey = String.valueOf( "_{$TEMP_SORT_" + i + "$}_" );
					IQuery.SortSpec dest = new IQuery.SortSpec( sortIndex,
							sortKey,
							src.getSortDirection( ) == ISortDefinition.SORT_ASC );
					sortSpecs[i] = dest;
				}
				odiQuery.setOrdering( Arrays.asList( sortSpecs ) );
			}
			
			List dataSetFilters = new ArrayList( );
			List queryFilters = new ArrayList( );
			if ( dataSet.getFilters( ) != null )
			{
				dataSetFilters = dataSet.getFilters( );
			}
			if ( this.baseQueryDefn.getFilters( ) != null )
			{