Database schema and custom Micronaut validators
We have dedicated migrations for defining the database schema.
It isn’t automatically generated from the java code model.
We use migration files for postgres to keep that inline with the model. So really it's 2 things that we make line up.
We never generate in production.
There are validation api annotations and you can add custom validators.
The entities should be validated when passed to the various repositories.
save( @Valid someEntity )
This ensures the validation routines are called on the model.
You should also get a validation exception should it fail.
Validating that a property is not null
@NonNull is a compiler and tooling suggestion whereas @NotNull is a validation directive for validated classes. If you want to validate a property is not null make sure it also has the NotNull variant. I would say rule of thumb, is that you either want both or just NonNull