In this tutorial, we'll illustrate the moment when JPA assigns a value to the primary key. We'll clarify what the JPA specification says, and then, we'll show examples using various JPA strategies for primary key generation.
2. Problem Statement
As we know, JPA (Java Persistence API) uses the EntityManager to manage the lifecycle of an Entity. At some point, the JPA provider needs to assign acvalue to the primary key. So,...