Private members in the model

Question

I work with a game.

I defined a private member in my model, hoping that the JPA would not try to handle this.

For some reason, I get this error:

JPA error occurred (EntityManagerFactory cannot be built): Could not determine type for: java.util.Map, at table: User, for columns: [org.hibernate.mapping.Column (myPrivateMember)]

How can I declare such private members without deducting a JPA?

Answer 1

Use the @Transient annotation. This suggests that the element is not sustainable.