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
isExecuted = false;
		
		
		try
		{
			dataSet.afterClose( );
		}
		catch ( DataException e )
		{
			logger.logp( Level.FINE,
					QueryExecutor.class.getName( ),
					"close",
					e.getMessage( ),
					e );
		}
		dataSet = null;
		dataSource = null;
		logger.logp( Level.FINER,
				QueryExecutor.class.getName( ),
				"close",
				"executor closed " );
	}
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryExecutor#getDataSet()
	 */
	public DataSetRuntime getDataSet( )
	{
		return dataSet;
	}
	/*