Kent Sølvsten wrote:
Sounds excellent!
I really like the option to decide between eager and lazy migration.
A question comes to mind, though.
What happens when I have a lazy migration renameProperty("oldName",
"newName") and then attempt to query for the entities with newname=foo?
Will I find the entities that are not migrated yet?
It sounds like a difficult case to support. On the other hand it would
seriously reduce the value of lazy migration if unsupported.
Right, so that's one of the tradeoffs you have to make. If you are
changing a property that you know is used by queries you will probably
want to do eager migration. If the property is only used through the
domain model you can afford to do it lazily.
But with the proposed model you have a choice. If you are doing queries
on 10 out of 100 properties that's a whole lot of possibilities for lazy
migration...
/Rickard
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