JPA Annotation

JoinColumns

Target: METHOD, FIELD
Implemented Interfaces:
Annotation
Specifies the mapping for composite foreign keys. This annotation groups JoinColumn annotations for the same relationship.

Each JoinColumn annotation must explicit specify both name and referencedColumnName.

Example:

 {@snippet :
See Also:
JoinColumn
ForeignKey
Since:
JPA 1.0

Public Annotation Attributes

ForeignKey foreignKey default @ForeignKey(PROVIDER_DEFAULT)
(Optional) Used to specify or control the generation of a foreign key constraint when table generation is in effect.
If both this element and the foreignKey element of any of the JoinColumn elements are specified, the behavior is undefined. If no foreign key annotation element is specified in either location, a default foreign key strategy is selected by the persistence provider.
Since:
JPA 2.1
JoinColumn[] value default null
The join columns that map the relationship.
Since:
JPA 1.0