About @Embeddable

manual

JPA Persistable Types

Explains how JPA manages types, including entity classes, embeddable classes, primitive types, wrappers, string, date, enum, collections and maps.... See JavaDoc Reference Page... annotation: @Embeddable javax.persistence.Embeddable JPA annotation ...

 
forum_thread

Field not persisted in abstract class with two level of nesting

Hi, I have a field (embedded TZ1) which is not persisted in class MHD1 (TZ1  extends AS and AS extends ATT). But it seems to work fine when I skip the AS and make TZ2 extend directly from ATT. Here is an example code MHD1 #1 2014-06-18 12:52 Hi, I have a field (embedded TZ1) which is not persisted in class MHD1 (TZ1  extends AS and AS  ...

 
issue

Issues with JDO Casting & Full Qualified Names

hi! See this query and the comments about failures. This is really urgent for us because as you've stated, this is the only workaround for now to proper casting AND map KEY access though it isn't working correctly either.. Bug Version: Priority: Normal Status: Closed Replies: 1 Type:  Bug ...

 
api-jpa

javax.persistence.Embeddable

Defines a class whose instances are stored as an intrinsic part of an owning entity and share the identity of the entity.(Annotation of JPA)

 
api-jpa

embeddable(cls)

Return the metamodel embeddable type representing the embeddable class.(Method of javax.persistence.metamodel.Metamodel)

 
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 ? ... AFAIK JPA does not directly support an @Embeddable referencing the parent in which it is @Embedded. But ...

 
api-jpa

JPA Annotations for Classes

Reference (JavaDoc) of JPA 2 class annotations, including @Entity, @Embeddable, @IdClass, @Cacheable, @EntityListeners, etc.... (JavaDoc) of JPA 2 class annotations, including @Entity, @Embeddable, @IdClass, @Cacheable, @EntityListeners, etc. See JavaDoc ...

 
forum_thread

Unexpected internal exception during set field of an Embeddable to null

Hello, we get an Unexpected internal exception and have no idea what goes wrong. We can reproduce (mostly) the error in a very big use case. In the big use case and we create and persist millions of SignalValueImpl objects (Embeddables). Partly as in the stack trace an Embeddable contain another Embeddable. It seems like that we can't reproduce the problem in smaller use cases with less objects. Stack trace: #1 2016-06-24 08:36 Hello, we get an Unexpected internal exception and have no idea what goes wrong. We can reproduce ...

 
api-jpa

javax.persistence.ElementCollection

Defines a collection of instances of a basic type or embeddable class.(Annotation of JPA)

 
forum_thread

Is it ok to put list or map of embeddable objects in entity ?

Hi, Is it ok to put list or map of embeddable objects in entity? I mean, for example : @Entity public class Entity_A {     (...)     @Embedded     List<Class_B> bList;     @Embedded     Map<String, Class_C> cMap; (...) } where Class_B and Class_C are annotated as @Embeddable ? In the examples, there is only situation where there is one single instance of embeddable class in entity. And what happens if I do operation like : ... where Class_B and Class_C are annotated as @Embeddable ? In the examples, there is only situation where there is one ...