Hibernate: How can I join 2 classes in one table?
So, I'm pretty new to Hibernate and I have a problem.
I have an abstract class (the super-class, class Super), and 5 subclasses which should use the proprieties from the class Super and add a new propriety (a new column)
So how can I do this? Should I extend the class Super from java, or it's enough to join the classes using a JPA annotation.
Here is the second problem. How can I have 1 table for 2 classes. Someone (smarter than me) told me to use the @JoinTable, but form my searches with google, I think I need to use @Inheritance(strategy=InheritanceStrategy.JOINED)
Can I use the @JoinTable too?
No correct solution
Yours is a case of inheritance:
- add the
@Inheritance(stretegy=InheritanceStrategy.SINGLE_TABLE)annotation on your
- add the
@DiscriminatorColumnannotation (and setting its attributes
discriminatorType) (again on the
- on each subclass
Super, and add the annotation
@DiscriminatorValue, with different value for each of the subclasses.