ObjectDB ObjectDB

javax.persistence.PrimaryKeyJoinColumns - JPA annotation

javax.persistence
Annotation PrimaryKeyJoinColumns

Target:
Classes and fields (including property get methods)
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:
JPA 1.0
One or more PrimaryKeyJoinColumn annotations.
One or more PrimaryKeyJoinColumn annotations.
Since:
JPA 1.0