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98 words

javax.persistence.Embedded - JPA annotation

javax.persistence
Annotation Embedded

Target:
Fields (including property get methods)
Specifies a persistent field or property of an entity whose value is an instance of an embeddable class. The embeddable class must be annotated as Embeddable.

The AttributeOverride, AttributeOverrides, AssociationOverride, and AssociationOverrides annotations may be used to override mappings declared or defaulted by the embeddable class.

Example:

   @Embedded
   @AttributeOverrides({
       @AttributeOverride(name="startDate", column=@Column("EMP_START")),
       @AttributeOverride(name="endDate", column=@Column("EMP_END"))
   })
   public EmploymentPeriod getEmploymentPeriod() { ... }

Since:
JPA 1.0
See Also:
Embeddable
AttributeOverride
AttributeOverrides
AssociationOverride
AssociationOverrides
This annotation is a marker annotation (with no elements).
This documentation page is derived (with some adjustments) from the open source JPA 2 RI (EclipseLink)
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.
Object Relational Mapping (ORM) JPA 2 providers include Hibernate, EclipseLink, TopLink, OpenJPA and DataNucleus.
Object DB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.