What collections does jpa return?

Question

Does JPA ( Eclipselink in this case) always return IndirectList where Entity have a List? Is ok that list or It should be converted to another list( maybe linkedlist)?

Answer 1

Since List is an interface the JPA provider is free to return any implementation. EclipseLink rerurns an IndirectList where a List is used. This is perfectly fine since the IndirectList is a List.

For the record or for future reference, it is generally best practice to use interfaces with JPA.