[Glass] Cleaning up TimeZone class history

[Paul DeBruicker via Glass]

GLASS mailing list wrote
> On an unrelated note ... Paul, do you realize that according to my mail 
> browser this reply arrived 20 minutes before the original email? Makes 
> it a bit interesting trying to read multiple emails on the same subject 
> since they are not really in "chronological order"... the other day each 
> message had a seemly random timestamp and the conversation was very 
> difficult to follow :)

Thats probably a symptom of replying through the Nabble interface at
forum.world.st rather than a regular ole mail client.  I'll see what I can
do about it.  Just to confirm the frist message I wrote described attempting
to use DataCurator and SystemUser, and the second just SystemUser with
linked topaz. 


GLASS mailing list wrote
> What did the stack look like for the error?
> 
> ... oh you are in a loop ... you need to explicitly abort before each 
> #migrateInstancesTo: call --- if there are modified objects in the 
> system. So a commit is probably needed after each #removeVersion: call 
> ... just a guess.
> 
> Is there a reason why you are trying to clean up the class history for 
> Timezone?
> 
> Dale

Some of my domain objects store DateTimes and some of those DateTimes' time
zones are now of the ObsoleteTimeZone2 class.  Reloading my packages after
the upgrade installed my extensions on the TimeZone class and now the
ObsoleteTimeZone2 class dnu a couple messages.  So I thought that by
cleaning up the TimeZone class history all my DateTimes with the
ObsoleteTimeZone2 class would be fixed up as well.  

I can also devise a strategy to just #become: all the DateTimes in my
objects with ObsoleteTimeZone2 timezones.  Can't change the time zone in
them directly because DateTimes are invariant.  

This is the first time its been an issue so I'm wondering if there is part
of the installation guide I missed that covers things like this?  Or if it
is indicative of a misstep in another part of my process.




Anyway thanks for getting back to me on a Sunday.   


Paul




GLASS mailing list wrote
> On 7/16/16 4:24 PM, Paul DeBruicker via Glass wrote:
>> Oh and if logged in as SystemUser in linked topaz I run
>>
>> topaz 1> abort
>> topaz 1> printit
>>    [ TimeZone classHistory size > 1 ]
>>      whileTrue: [
>>        (TimeZone classHistory at: 1)
>>          migrateInstancesTo: TimeZone classHistory currentVersion.
>>        TimeZone classHistory removeVersion: (TimeZone classHistory at: 1)
>> ].
>> %
>>
>> I get this error:
>>
>>
>> ERROR 2412 , a TransactionError occurred (error 2412),
>> reason:rtErrAbortWouldLoseData, A method that requires an abort is being
>> executed, however, an abort would result in lost data. (TransactionError)
>>
>>
>> So progress, but not completely there.
>>
>>
>>
>>
>>
>> GLASS mailing list wrote
>>> Hi -
>>>
>>> In my stone I have ObsoleteTimeZone & ObsoleteTimeZone2 in the TimeZone
>>> class history of a stone I just updated to 3.3.1.   The DataCurator user
>>> doesn't have permissions to migrate those classes apparently.  And when
>>> I
>>> sign in as the SystemUser in linked Topaz the Smalltalk symbol is not
>>> understood.
>>>
>>> To do the migration I'm running:
>>>
>>>    System abort.
>>>    System beginTransaction.
>>>    [ :className |
>>>    | c |
>>>    c := Smalltalk at: className.
>>>    c isBehavior
>>>      ifTrue: [
>>>        [ c classHistory size > 1 ]
>>>          whileTrue: [
>>>            (c classHistory at: 1) migrateInstancesTo: c classHistory
>>> currentVersion.
>>>            c classHistory removeVersion: (c classHistory at: 1) ] ] ]
>>>      value: #'TimeZone'.
>>>    System commitTransaction
>>>
>>>
>>>
>>> Thanks
>>>
>>>
>>> Paul
>>> _______________________________________________
>>> Glass mailing list
>>> Glass at .gemtalksystems
>>> http://lists.gemtalksystems.com/mailman/listinfo/glass
>>
>>
>>
>>
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> 
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