Package jakarta.persistence
Annotation Interface PrimaryKeyJoinColumns
Groups
PrimaryKeyJoinColumn
annotations.
It is used to map composite foreign keys.
Example: ValuedCustomer subclass @Entity @Table(name="VCUST") @DiscriminatorValue("VCUST") @PrimaryKeyJoinColumns({ @PrimaryKeyJoinColumn(name="CUST_ID", referencedColumnName="ID"), @PrimaryKeyJoinColumn(name="CUST_TYPE", referencedColumnName="TYPE") }) public class ValuedCustomer extends Customer { ... }
- Since:
- 1.0
- See Also:
-
Required Element Summary
Modifier and TypeRequired ElementDescriptionOne or morePrimaryKeyJoinColumn
annotations. -
Optional Element Summary
Modifier and TypeOptional ElementDescription(Optional) Used to specify or control the generation of a foreign key constraint when table generation is in effect.
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Element Details
-
value
PrimaryKeyJoinColumn[] valueOne or morePrimaryKeyJoinColumn
annotations.
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-
-
foreignKey
ForeignKey foreignKey(Optional) Used to specify or control the generation of a foreign key constraint when table generation is in effect. If both this element and theforeignKey
element of any of thePrimaryKeyJoinColumn
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.- Since:
- 2.1
- Default:
- @jakarta.persistence.ForeignKey(PROVIDER_DEFAULT)
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