[Glass] package depends on class provided by package

Dale Henrichs dale.henrichs at gemtalksystems.com
Tue Jun 24 21:30:56 PDT 2014


What does the class hierarchy for the provided class look like ... before
(hierarchy of involved classes before load) and after (intended hierarchy
after load) ... I'd also like to see more details about the error itself
... start with a stack trace so I can see what methods are involved and
then after I've studied that a bit, I'll probably have more questions ....

I don't recall touching the Monticello loader for a long time, so there
must be something else causing the loader to get confused ... The loader
scans the definitions and builds a list of classes (class definitions)
provided by the mcz file  and it uses that plus the existing class
definitions from the image to determine whether or not the package depends
upon missing classes ... so for some reason GemStone is not seeing the
class definition or it is not recognizing the name of the class ... you
could look at the snapshot (orderedCollection of definitions) from the mcz
file and write a little script to extract the classNames from the
classDefinitions and see if the class is in the definition list also look
for any funky looking classNames ... I don't recall whether or not the
classNames are supposed to be symbols, but that would be a classic problem
if somehow the classNames in the mcz are Strings or Symbols when they are
expected to be Symbols or Strings  ...

Is it possible that you've got some WideStrings being produced by the Pharo
images? GemStone doesn't know what to do with WideStrings embedded in mcz
files ... this is another "classic problem"

Are these mcz files written out by FileTree? If so try a classical mcz file
if not try a FileTree package (FileTree write UTF8 to disk, so any non 8
bit ASCII characters can be handled correctly) ...

I guess you could also ship me the mcz file and I can put it under a
microscope...

Dale


On Tue, Jun 24, 2014 at 8:59 PM, Paul DeBruicker <pdebruic at gmail.com> wrote:

> Hi -
>
> I’ve got an mcz file that when I attempt to load it GemStone 3.1.0.6/Glass
> 1.0-b9.2 I get an error saying the package depends upon a class that is
> provided by the mcz.  This just started happening a week ago (e.g. also was
> happening in 1.0-b9.1) so I think it is something to do with the mcz.    If
> as a test I make a branch and remove the offending class in the package
> then reattempt the load, another package, higher in the same class
> hierarchy causes the error.
>
> The package loads fine into Pharo 1.4 & 2.  I have not tried others yet.
>
> How should I go about figuring out what is causing the error?
>
>
> Thanks
>
> Paul
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