Hibernate JPA @PrimaryKeyJoinColumns Example

@PrimaryKeyJoinColumns

The @PrimaryKeyJoinColumns annotation is used to group multiple @PrimaryKeyJoinColumn annotations.

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 { ... }