 74 | javax.persistence Annotation Embeddable Target: Classes Defines a class whose instances are stored ... that the Transient annotation may be used to designate the non-persistent state of an embeddable class. Example 1:
@Embeddable public class EmploymentPeriod {
@Temporal(DATE) java.util |
73 | Method javax.persistence.metamodel.Metamodel EmbeddableType embeddable( Class cls ) Return the metamodel embeddable type representing the embeddable class. Parameters: cls - the type of the represented embeddable class Returns: the metamodel embeddable type Throws: IllegalArgumentException - if not an embeddable class Since: JPA 2.0 |
69 | Enum Constant javax.persistence.metamodel.Type.PersistenceType EMBEDDABLE Embeddable class Since: JPA 2.0 |
39 | , Mapped superclasses, Embeddable classes. Simple Java data types: Primitive types, Wrappers, String ... , OpenJPA, JPOX, DataNucleus, etc.). Embeddable Classes Embeddable classes are user defined persistable classes that function as value types. As with other non entity types, instances of an embeddable |
31 | an embeddable class:
@Entity
public class Project {
@EmbeddedId ProjectId id;
:
}
@Embeddable
Class ProjectId {
int departmentId;
long projectId;
}
The primary key fields are defined in an embeddable class. The entity contains a single primary key field that is annotated |
31 | to retrieve sets of types:
// Get all the managed classes:
// (entity classes, embeddable classes ... ();
// Get all the embeddable classes:
Set allEmbeddableTypes = metamodel.getEmbeddables ... instance:
// Get a managed type (entity, embeddable or mapped super classes):
ManagedType |
24 | AFAIK JPA does not directly support an @Embeddable referencing the parent in which it is @Embedded ...
public class Person {
@Embeddable public Address address;
...
}
@Embeddable
public class ... ;
this.profile.setUser(this);
}
// ...
}
@Embeddable
class Profile implements Serializable |
24 | Hi, Is it ok to put list or map of embeddable objects in entity? I mean, for example :
@Entity ...
Map 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 |
24 | at http://www.objectdb.com/java/jpa/entity/types website in "Embeddable Classes" section ... . The complete paragraph: "Instances of embeddable classes are always embedded in other entity ... . Therefore, using embeddable classes can save space in the database and improve efficiency. Embeddable |
24 | 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 ... implementation of SignalValueImpl
import javax.persistence.Basic;
import javax.persistence.Embeddable |