But I do not get how doing that would handle the old instances? Because you want to migrate the old instances.
Stef On Wed, Apr 12, 2017 at 1:26 PM, Denis Kudriashov <dionisi...@gmail.com> wrote: > > 2017-04-12 13:17 GMT+02:00 Guillermo Polito <guillermopol...@gmail.com>: > >> 1) each instance of A is becomed into its corresponding instance of A' >> 2) finally we become class A into A' >> This step will make that old instances of A now have: >> - the old format >> - but point to the new class A >> > > step 1) ensures that there are no instances of class A anymore. > Check following script: > > c1 := Class1 new. > c2 := Class2 new. > c1 becomeForward: c2. > Class1 allInstances "=> #()". > > > And full migration is executed in high priority uninterrupted process to > ensure that between 1) and 2) nobody will instantiate Class1 > >
