javax.persistence.MapKeyJoinColumns - JPA annotation
javax.persistence
Annotation MapKeyJoinColumns
- Target:
- Fields (including property get methods)
Supports composite map keys that reference entities.
The MapKeyJoinColumns
annotation groups MapKeyJoinColumn
annotations. When the MapKeyJoinColumns
annotation is used, both the name
and the referencedColumnName
elements must be specified in each of the grouped MapKeyJoinColumn
annotations.
- Since:
- JPA 2.0
- See Also:
- MapKeyJoinColumn
(Required) The map key join columns that are used to map to the entity that is the map key.
- Since:
- JPA 2.0