Bug 147977 Chart editor does not use container's column bindings
1) create data source 2) create data set: select * from customers 3) create table 4) bind country, customer name to table 5) group by country 6) create a binding for total_by_country which aggregates # of customers in each country. put a data element in group footer and bind to total_by_country 7) in group header put chart 8) in data tab specify inherit from container Result: You see columns for report data set created in step 2. Expected Result: Just 3 columns for the 3 bindings created in 4 and 6.
data/org.eclipse.birt.data.tests/test/org/eclipse/birt/data/engine/impl/rd/ViewingTest2.java
*/
	private List genBasicNestedQuery() throws BirtException
	{
		QueryDefinition qd1 = newReportQuery( );
		
		IBaseExpression[] rowBeArray = getRowExpr( );
		IBaseExpression[] totalBeArray = getAggrExpr( );
		populateColumnBinding( qd1, rowBeArray, totalBeArray );
		
		
		IQueryResults qr1 = myGenDataEngine.prepare( qd1 ).execute( scope );
		QueryDefinition qd2 = newReportQuery( );
		populateColumnBinding( qd2, rowBeArray, totalBeArray );
		
		ConditionalExpression filterExpr = new ConditionalExpression( "row._outer[\"CITY_1\"]",
				IConditionalExpression.OP_EQ,
				"\"Shanghai\"" );
		qd2.addFilter( new FilterDefinition( filterExpr ) );
		
		IPreparedQuery preparedQuery = myGenDataEngine.prepare( qd2 );
		
		GEN_queryResultID = qr1.getID( );
		List nestedQueryResultId = new ArrayList();
		IResultIterator ri1 = qr1.getResultIterator( );
		while ( ri1.next( ) )
		{
			String abc = "";
			for ( int i = 0; i < rowExprName.length; i++ )
				abc += ri1.getValue( this.rowExprName[i] ) + "  ";
			for ( int i = 0; i < totalExprName.length; i++ )