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
if ( parentAndProtoScope == null )
			parentAndProtoScope = sharedScope;
		Context cx = Context.enter( );
		try
		{
			Scriptable scope = cx.newObject( parentAndProtoScope );
			scope.setParentScope( parentAndProtoScope );
			scope.setPrototype( parentAndProtoScope );
			return scope;
		}
		finally
		{
			Context.exit( );
		}
	}
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryExecutor#getNestedLevel()
	 */
	public int getNestedLevel( )
	{
		return this.nestedLevel;
	}
	/*
	 * @see org.eclipse.birt.data.engine.impl.IQueryExecutor#getDataSourceInstanceHandle()
	 */
	public IDataSourceInstanceHandle getDataSourceInstanceHandle( )
	{
		return this.dataSource;
	}
	/*