LV2OO Implementation

[kikiduu]

 Hi,

I am trying to implement LV2OO style global using the Visitor pattern example provided in this document.

Simulate_LV.vi shows the way I normally use LV2 globals. Simulate_LV2OO.vi is how I have used visitor pattern to implement the same functionality using visitor pattern.

I would like to know whether this is the correct implementation and if there a better way to do this?

Thanks.

[vt92]

Can you save it as 8.5?  I would like to see your implementation.

[kikiduu]

Hi,

LabVIEW 8.5 version attached.

[vt92]

Very interesting.  I really want to use the LV2OO methods, but I'm still really having trouble understanding how they are easier or better.

To quote Stephen Mercer: "I am tired of writing LV2-style globals. These globals are great – very dataflow efficient, very easy to

understand. But you have to duplicate the VI every time you want to support a different data type. I figured

there had to be a better way. I’ve been thinking about this implementation for a while. It may not be optimal,

but I think it is an excellent starting point."

I understand his sentiments, but the LV2OO implementation looks a lot more complicated to me.  Just look at how many vi's had to be written.  The LV2 style is sooo much easier.

Would anyone like to comment?

[kikiduu]

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vt92 wrote:

I understand his sentiments, but the LV2OO implementation looks a lot more complicated to me.  Just look at how many vi's had to be written.  The LV2 style is sooo much easier.

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It is rather too big compared to a simple Get/Set LV2 Style. That's one of the reasons that prompted me to start this thread 

But if you have a complex multifunctional LV2 global, then I guess it will be wise to use LV2OO approach. I am yet to try out the performance implications of LV2OO method.

Anyway I've decided to use LV2OO so that I can understand LabVOOP concepts better.