Defining EJB 3 Basic O/R Mapping

There are three kinds of persistent classes in EJB 3:

Entity classes
Embeddable classes
Mapped superclasses

The following requirements apply to persistent classes:

They must be defined as persistent classes (see Entity Class Transformation).
They must be top level classes (and not inner classes).
Entity classes and Mapped superclasses should carry the EJBEntity stereotype.
Embeddable classes are Value type classes, i.e. persistent classes with a Value type persistent type.

Classes that do not meet these requirements will be ignored.

Tip: You can set the stereotype and persistence of all the classes in a model or package (and sub-packages) by right-clicking the model or package and selecting Make Persistent from the contextual menu.

Defining Entity Mappings
Set the stereotype of persistent classes to make them EJB 3 Entity classes.
Defining Embeddable Class Mapping
Embeddable classes are simple Value type classes. Follow the instructions for defining Value type class mappings to define Embeddable class mapping for EJB 3.

Parent topic: Generating EJB 3 Persistent Objects