> I am having some really odd issues with a com object.
> Requests to a single method call such as
> "object.setField("city",arguments.city)" are leading to
> variables being created in variables scope of a cfc. For
> example if I dump the variables scope before and after the
> method call above, I see that 2 variables are added to
> variables scope, one named "city" and another that is named
> after the actual value of the argument passed.
I think you'd need to show the relevant CFC code here.
> I also noticed years ago, when we were using a custom tag
> instead of cfc to access this com object, that if I have a
> url or form variable with the same name as one of the method
> parameters it would have problems and set values as blank if
> I'm remembering correctly.
>
> Has anyone seen something like this before? I would expect
> all of these method calls to just pass data by value and run
> in a separate memory space.
Not all data is passed by value. Structures and queries, for example, are
passed by reference. It doesn't sound like you're passing one of those, but
I can't be sure, obviously.
> To explain my full situation, I am trying to make the com
> object available in server scope. This will prevent some
> threading issues to the data files being accessed by the com
> object when accessed by multiple cf applications. Everything
> works fine for a while but then ColdFusion as a whole starts
> producing the error "unable to create new native thread
> null". I am trying to track down more specific info about
> that error but my first thought was to check for memory leaks
> leading to the discovery I mentioned above.
Well, CF doesn't handle COM objects especially well, in my opinion. If
you're using a single COM object a lot, you might consider replacing it with
an analogous object in Java or CF. The "native thread" message doesn't sound
like a memory leak problem to me, but I wouldn't be at all surprised if you
do encounter memory leaks in CF when using COM.
Dave Watts, CTO, Fig Leaf Software
http://www.figleaf.com/
Fig Leaf Training: Adobe/Google/Paperthin Certified Partners
http://training.figleaf.com/
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