@Target(value={TYPE,METHOD,FIELD}) @Retention(value=RUNTIME) public @interface PrimaryKeyJoinColumns
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 { ... }
ForeignKey
Modifier and Type | Required Element and Description |
---|---|
PrimaryKeyJoinColumn[] |
value
One or more
PrimaryKeyJoinColumn annotations. |
Modifier and Type | Optional Element and Description |
---|---|
ForeignKey |
foreignKey
(Optional) Used to specify or disable a foreign key constraint when
table generation is in effect.
|
public abstract PrimaryKeyJoinColumn[] value
PrimaryKeyJoinColumn
annotations.public abstract ForeignKey foreignKey
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