[java] Java Persistence API (JPA) Entity Rule: Non-Final Class

[numeralnathan]

Proposed Rule Name: JPANonFinalClass

Proposed Category: Bug

Description:

When a class is annotated with JPA's @Entity, there are certain requirements placed on the class. Please create a rule that requires the class to be non-final.

Note: Hibernate allows for final classes but lazy-loading will not work.

Code Sample:

The following class will cause a problem at runtime because it is final.

@Entity
final class MyEntity
{
...
}

The following class is correct.

@Entity
class MyEntity
{
...
}

Possible Properties:

• allowPackage: Hibernate allows for package protected no-argument constructors