MapKeyJoinColumn.name - JPA annotation element
Annotation Element javax.persistence.MapKeyJoinColumn
String name
(Optional) The name of the foreign key column for the map key. The table in which it is found depends upon the context.
- If the join is for a map key for an element collection, the foreign key column is in the collection table for the map value.
- If the join is for a map key for a ManyToMany entity relationship or for a OneToMany entity relationship using a join table, the foreign key column is in a join table.
- If the join is for a OneToMany entity relationship using a foreign key mapping strategy, the foreign key column for the map key is in the table of the entity that is the value of the map.
Default (only applies if a single join column is used.) The concatenation of the following: the name of the referencing relationship property or field of the referencing entity or embeddable class; "_"; "KEY".
- Default value:
- ""
- Since:
- JPA 2.0
