6.12.2 Requirements for creating entity classes

When you create an application that uses the JPA, you must follow the requirements for creating the entity classes and the requirements for database mapping determined in the JPA specifications. The requirements for creating entity classes are as follows:

With Cosminexus JPA Provider, if these conditions are not satisfied, an exception might occur. Note that even if an exception does not occur, the operations might not function properly if an entity class that does not satisfy these conditions is created.

Furthermore, for Cosminexus JPA Provider, do not associate one database column with multiple fields in the entity class. If this condition is not satisfied, an exception might occur during the execution of the application. Even if the exception does not occur, the operations might not function properly.