Hi Yarek,
Regarding to data migration, it is migration between different stores.
My understanding of the typical cases are:
1. Change the backend. e.g. change BDB to Postmodern .
2. Upgrade. e.g. your application uses elephant 0.9.1 and BDB 4.5; To
upgrade elephant from 0.9.1
Hi Yarek,
There are no problems adding or deleting slots. The semantics are
basically the same as redefining slots for standard classes. You can
change the type of a slot (e.g. cached, index, etc) without any data
loss. If you change the name or drop a slot the data associated with
that
In an evolving site there is a fair chance of adding/changing/deleting slots
from a class. What are good practices with respect to these actions in
Elephant? Are there specific steps that need to be taken to migrate data
from an old class definition to a new class definition? Any gotchas one
nee
