Bug 417305 A sample chart has no data
chart/org.eclipse.birt.chart.examples/src/org/eclipse/birt/chart/examples/view/models/WorkingWithBIRTDataEngine.java
colBinding = new Binding( expr );
					colBinding.setExpression( new ScriptExpression( expr ) );
				}
				queryDefn.addBinding( colBinding );
			}
			queryDefn.addGroup( gd );
		}
		catch ( DataException e )
		{
			throw new ChartException( ChartExamplesPlugin.ID,
					ChartException.DATA_BINDING,
					e );
		}
		return queryDefn;
	}
	/**
	 * Initialize default column bindings for original columns.
	 * 
	 * @param queryDefn
	 * @throws DataException
	 */
	private void initDefaultBindings( QueryDefinition queryDefn )
			throws DataException
	{
		Binding colBinding = new Binding( FlatFileDataSource.COLUMN_COUNTRY );
		colBinding.setExpression( new ScriptExpression( ExpressionUtil.createDataSetRowExpression( FlatFileDataSource.COLUMN_COUNTRY ) ) );
		queryDefn.addBinding( colBinding );
		colBinding = new Binding( FlatFileDataSource.COLUMN_CUSTOMERNUMBER );
		colBinding.setExpression( new ScriptExpression( ExpressionUtil.createDataSetRowExpression( FlatFileDataSource.COLUMN_CUSTOMERNUMBER ) ) );
		queryDefn.addBinding( colBinding );