Bug 417305 A sample chart has no data
chart/org.eclipse.birt.chart.examples/src/org/eclipse/birt/chart/examples/view/models/WorkingWithBIRTDataEngine.java
queryDefn.setDataSetName( odaDataSet.getName( ) );
		try
		{
			initDefaultBindings( queryDefn );
			
			String groupName = "Group_Country"; 
			GroupDefinition gd = new GroupDefinition( groupName );
			gd.setKeyExpression( expressions[0] );
			gd.setInterval( IGroupDefinition.NO_INTERVAL );
			gd.setIntervalRange( 0 );
			
			for ( int i = 0; i < expressions.length; i++ )
			{
				String expr = expressions[i];
				
				Binding colBinding = null;
				if ( i == 1 )
				{
					String newStr = ChartUtil.escapeSpecialCharacters( expr
							+ "_" + "Count" ); 
					colBinding = new Binding( newStr );
					colBinding.setExpression( null );
					colBinding.setAggrFunction( IBuildInAggregation.TOTAL_COUNT_FUNC );
					colBinding.addAggregateOn( groupName );
					colBinding.addArgument( new ScriptExpression( expressions[i] ) );
					
					expressionMap.put( ExpressionUtil.createRowExpression( newStr ), newStr );
				}
				else
				{