Magma and UUID?

[Chris Muller]

Hi Jerry, what image are you using?  It sounds to me like #printString
was moved up to ProtoObject in your image.  That's a bad idea, IMO; we
should be moving things out of ProtoObject, not into.

Remember, the proxy's are supposed to be lightweight stand-in's for
their real object, they are not supposed to be able to understand
anything but a most minimal protocol.  When it receives a message it
does not understand itself, #doesNotUnderstand: is invoked on the
proxy where it undergoes its transofrmation to the real object and
forwards the message.  Any messages which have been moved to
ProtoObject will actually be understood by the proxy and therefore not
undergo the transformation to the real object when those messages are
sent.

I would make sure that #yourself is not implemented in ProtoObject
either ,which would be a better message to force materialization than
#copy.

 - Chris

On Mon, Oct 13, 2008 at 7:58 AM, Jerry Bell <jdbell at oxfordmetamedia.com> wrote:
> Hi,
>
> One of my models has a UUID stored in an instance variable.
>
> It appears that the UUID is not always converted back to a real object.
> I'm using Seaside, and I often get walkbacks when dealing with this ivar.
>  Specifically, I use this UUID to create a filename, using "(myUUID
> printString), '.rss'."  The walkback shows that I am ending up with
> something like "a MagmaMutatingProxy .rss".  When I examine the debugger, I
> find a MagmaMutatingProxy where I would expect to find my UUID.
>
> If I open an explorer on the object, and click on the MagmaMutatingProxy, I
> will see the real UUID appear.  After that happens, my application will run
> with no further problems (I am using Magma seasideHelper and I suspect that
> the reified object is cached).
>
> If I replace my accessor method "^ uuid" with "^ uuid copy" everything seems
> to work correctly.   So far that seems like a good workaround but I'd like
> to make sure I'm not doing something wrong.  Is it possible that Magma is
> not always handling UUIDs correctly?
>
> Thanks,
>
> Jerry
>
>
>
>
>
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