private attributes

[griffindore]

Hi everyone,

There doesn't seem a way to make private object attributes since the attributes control and GetAttributes util method are both protected. The description of the GetAttributes util VI says that it can be used by child classes to gain access to parent attributes. I use property nodes extensively so I've never actually tried to use a GetAttributes util VI in a child class.

Since I'm using LV 2010 and impose that property access be performed via property nodes, I think I can allow for private attributes by making the ObjectAttributes.ctl and GetAttributes.vi private. Then my access scope of properties is actually enforced through the property node access scope.

Do you think that would work, and does it make sense to do things that way? I'd like some sort of verification that I'm not out of my mind before I start migrating my classes to the proposed scenario.

Regards,

Mike Lyons

[Mattias_Ericsson]

Hi,

I think the scenario you are describing would work just well. You could set the GetAttributes to private scope to enforce them to be accessed privately, that is absolutly correct. When developing G#, we decided not to support both protected and private at the same time, but set all as protected. This is because we wanted to make as little code as possible for each class with as few util methods as possible. Usually I just mark the attributes intended to be private with the naming like "_myAttributeName" for a private attribute.

If you make the the GetAttributes private and then define properties for the attributes you want to be access in protected or public scope, the way you are describing works very well.

Actually, improving the property support in the G#IDE is for the moment my top priority on the todo list. Now when LV2010 is much more used and properties for that matter is getting more used, there is a need of more support from the G#IDE, like rename, delete and clone features. I think you could expect these features for properties in the next version of G# Framework.

I only wished that NI could make the property node a bit smaller on the diagram (why write .lvclass?)...

Regards,

Mattias