Description Wouter Oet 2012-09-18 10:05:11 EDT

EclipseLink should warn or even stop deployment when a single table inheritance strategy is used with a subclass having a nonnull field. Otherwise other entities is the object tree can't be persisted. This moves the failure from "runtime" to "deploytime". E.g.:

@Entity
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name = "type")
@DiscriminatorValue("A")
public class A {

	@Id
	@GeneratedValue
	public long id;
	public String name;
}

@Entity
@DiscriminatorValue("B")
public class B extends A {

	@Column(nullable = false)
	public String something;
}

@Singleton
@javax.ejb.Startup
public class Startup {

	@PersistenceContext
	private EntityManager em;

	@PostConstruct
	public void init() {
		A a = new A();
		a.name = "asdf";

		em.persist(a); // No go
	}
}