@Target(value={METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface MapKeyJoinColumns
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.
MapKeyJoinColumn,
ForeignKey| Modifier and Type | Required Element and Description |
|---|---|
MapKeyJoinColumn[] |
value
(Required) The map key join columns that are used to map to the entity
that is the map key.
|
| Modifier and Type | Optional Element and Description |
|---|---|
ForeignKey |
foreignKey
(Optional) Used to specify or control the generation of a
foreign key constraint when table generation is in effect.
|
public abstract MapKeyJoinColumn[] value
public abstract ForeignKey foreignKey
foreignKey
element of any of the MapKeyJoinColumn
elements are specified, the behavior is undefined. If no
foreign key annotation element is specified in either
location, the persistence provider's default foreign key
strategy will apply.