About or

  • Search for either of the two terms with uppercase OR. For example, cats OR dogs.
forum_thread

Does ObjectDB support @Parent for @Embeddable reference to parent?

AFAIK JPA does not directly support an @Embeddable referencing the parent in which it is @Embedded. But Hibernate has a special @Parent for it (see Entity extensions 2.4.3.4.@Parent). @Entity public class Person { @Embeddable public Address address; ... } @Embeddable public class Address { @Parent public Person owner; ... } Is there a safe and recommended way of achieving this in ObjectDB ? ... achieving this in ObjectDB ? I saw this trick (or similar) via a setter , but not sure whether it is safe under ObjectDB ... Cancel To post a reply and/or subscribe to update notifications - please login . ...

 
api-jpa

javax.persistence.EntityNotFoundException

Thrown by the persistence provider when an entity reference obtained by EntityManager.getReference is accessed but the entity does not exist.(Exception of JPA)

 
api-jpa

EnumType.STRING

Persist enumerated type property or field as a string.(Enum Constant of javax.persistence.EnumType)

 
api-jpa

EnumType.ORDINAL

Persist enumerated type property or field as an integer.(Enum Constant of javax.persistence.EnumType)

 
tutorial

NetBeans/JPA Web Application Tutorial

Step by step tutorial that demonstrates how to build a simple database web application (with Servlet and JSP) in NetBeans using JPA.... the following software: Java JDK 6.0 (or above). NetBeans - Java or All bundle The last version of ObjectDB (just download ...

 
api-jpa

Basic.optional

(Optional) Defines whether the value of the field or property may be null.(Annotation Element of javax.persistence.Basic)

 
api-jpa

OneToMany.fetch

(Optional) Whether the association should be lazily loaded or must be eagerly fetched.(Annotation Element of javax.persistence.OneToMany)

 
api-jpa

ManyToOne.fetch

(Optional) Whether the association should be lazily loaded or must be eagerly fetched.(Annotation Element of javax.persistence.ManyToOne)

 
api-jpa

ManyToMany.fetch

(Optional) Whether the association should be lazily loaded or must be eagerly fetched.(Annotation Element of javax.persistence.ManyToMany)

 
api-jdo

javax.jdo.annotations.Join

Annotation for the join of a relation.(Annotation of JDO)