enhancement
major
minor
major
minor
defect
With #25881, read-only columns were introduced for tables that originally stored objects without a model; these columns provide the (constant) type reference for these objects. Such tables (e.g., Person) are therefore monomorphic, since they can store only objects of exactly this one type.
Problem
The replay migration is not prepared for this change and attempts to set the value for the type column (tType). This fails with an UnsupportedOperationException: "Computed attribute 'tType' must not be set."
Test
- test-app-rewrite from #26798