I’m working with Spring Data repositories and came across the following statement in the documentation:

Following that path can easily lead to confusion and is discouraged as you will quickly hit type limits if the ID type and the type of your Id property deviate.

I understand that the repository interface requires specifying the domain type and its identifier type as generic parameters. However, I’m unclear about the phrase “hit type limits.”

Does this mean I’ll encounter compile-time type mismatches or runtime errors if the declared ID type in the repository doesn’t match the type of the property named “Id” in my domain object?

What exactly are “type limits” in this context? Is it related to the limitations of Java’s generic type system, or does it refer to a different kind of constraint?

related documentation