Package javax.persistence
Annotation Type MapKeyJoinColumns
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@Target({METHOD,FIELD}) @Retention(RUNTIME) public @interface MapKeyJoinColumns
Supports composite map keys that reference entities.The
MapKeyJoinColumns
annotation groupsMapKeyJoinColumn
annotations. When theMapKeyJoinColumns
annotation is used, both thename
and thereferencedColumnName
elements must be specified in each of the groupedMapKeyJoinColumn
annotations.- Since:
- Java Persistence 2.0
- See Also:
MapKeyJoinColumn
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Required Element Summary
Required Elements Modifier and Type Required Element Description MapKeyJoinColumn[]
value
(Required) The map key join columns that are used to map to the entity that is the map key.
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Optional Element Summary
Optional Elements Modifier and Type Optional Element Description ForeignKey
foreignKey
(Optional) The foreign key constraint specification for the join columns.
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Element Detail
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value
MapKeyJoinColumn[] value
(Required) The map key join columns that are used to map to the entity that is the map key.
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foreignKey
ForeignKey foreignKey
(Optional) The foreign key constraint specification for the join columns. This is used only if table generation is in effect. Default is provider defined.- Returns:
- The foreign key specification
- Default:
- @javax.persistence.ForeignKey
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