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/src/org/eclipse/birt/data/engine/impl/PreparedQuery.java
Context cx, AggregateRegistry reg )
	{
	    ExpressionCompiler compiler = this.expressionCompiler;
	    
	    if ( expr instanceof IScriptExpression )
	    {
	    	String exprText = ((IScriptExpression) expr).getText();
	    	CompiledExpression handle = compiler.compile( exprText, reg, cx);
	    	expr.setHandle( handle );
	    }
	    else if ( expr instanceof IConditionalExpression )
	    {
	    	
	    	
	    	IConditionalExpression ce = (IConditionalExpression) expr;
	    	ce = transformConditionalExpression( ce );
			
	    	prepareExpression( ce.getExpression(), groupLevel, cx, reg );
	    	if ( ce.getOperand1() != null )
		    	prepareExpression( ce.getOperand1(), groupLevel, cx, reg );
	    	if ( ce.getOperand2() != null )
		    	prepareExpression( ce.getOperand2(), groupLevel, cx, reg );
	    	 
	    	
	    	expr.setHandle( ce );
	    }
	    else
	    {
	    	
	    	assert false;