[Glass] migrate problem

[Norbert Hartl]

Dale,

that didn’t work. Now I have some of the classes doubled and some tripled. I need to try a few more things. I was just wondering that the migrateTo: does not work as expected. I did this a few times in the past and it always worked like that. Or I just can’t remember correctly.

Norbert
 
Am 16.01.2014 um 17:37 schrieb Dale Henrichs <dale.henrichs at gemtalksystems.com>:

> Norbert,
> 
> I am not a migration expert and I haven't read the docs (yet), but in reading the code, I think that you are supposed to send the #migrate message to instances of your class ...
> 
> Have you looked at GsDeployer? I think the following will do a pretty good job of migrating the instances for you:
> 
>   GsDeployer bulkMigrate: ["add instance variable to class"]
> 
> in fact I think right now you should be able to do:
> 
>   GsDeployer bulkMigrate: ["empty block"]
> 
> and get "pending migrations performed"....
> 
> Dale
> 
> 
> On Thu, Jan 16, 2014 at 7:25 AM, Norbert Hartl <norbert at hartl.name> wrote:
> I have one class hierarchy that has between 40 and 50 Mio. instances. Now I needed to add an instVar to the root of the hierarchy. Doing it with gemtools I switched off auto migration and loaded the monticello package containing the changed. But now I have problems migrating the instances manually.
> 
> COEvent allSubclasses  size
> 
> gives 5 while
> 
> COEvent classHistory first allSubclasses size
> 
> gives 23. A
> 
> COEvent classHistory first migrateTo: COEvent
> 
> didn’t do the trick. And 
> 
> COEvent migrate 
> 
> gives me
> 
> a MessageNotUnderstood occurred (error 2010), a Metaclass3 does not understand  #’migrationDestination'
> 
> I’m using
> 
> GemStone version ‚3.1.0.2'
> 
> Any hints,
> 
> Norbert
> 
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