Bug 202398 Aggregaton for List can not aggregate on group [0001]
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java
txtDisplayName.getText( ) ) )
				return true;
			if ( !strEquals( binding.getDataType( ), getDataType( ) ) )
				return true;
			if ( !strEquals( binding.getExpression( ), cmbDataField.getText( ) ) )
				return true;
			if ( !strEquals( binding.getAggregateFunction( ),
					getFunctionByDisplayName( cmbFunction.getText( ) ).getName( ) ) )
				return true;
			if ( !strEquals( binding.getFilterExpression( ),
					txtFilter.getText( ) ) )
				return true;
			if ( btnTable.getSelection( ) == ( binding.getAggregateOn( ) == null ) )
				return true;
		}
		else
		{
			if ( !strEquals( txtName.getText( ), binding.getName( ) ) )
				return true;
			if ( !strEquals( txtDisplayName.getText( ),
					binding.getDisplayName( ) ) )
				return true;
			if ( !strEquals( getDataType( ), binding.getDataType( ) ) )
				return true;
			if ( !strEquals( txtExpression.getText( ), binding.getExpression( ) ) )
				return true;
		}
		return false;
	}
	private boolean strEquals( String left, String right )