javax.persistence
Annotation Type PrimaryKeyJoinColumns

@Target(value={TYPE,METHOD,FIELD})
@Retention(value=RUNTIME)
public @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 { ... }
 

See Also:

ForeignKey

Since:

Java Persistence 1.0

Required Element Summary

PrimaryKeyJoinColumn[]

value One or more PrimaryKeyJoinColumn annotations.

Optional Element Summary

ForeignKey

foreignKey (Optional) Used to specify or disable a foreign key constraint when table generation is in effect.

Element Detail

value

public abstract PrimaryKeyJoinColumn[] value

One or more PrimaryKeyJoinColumn annotations.

foreignKey

public abstract ForeignKey foreignKey

(Optional) Used to specify or disable a foreign key constraint when table generation is in effect. If this element is not specified, the persistence provider's default foreign key strategy will apply.

Since:

Java Persistence 2.1

Default:

@javax.persistence.ForeignKey(javax.persistence.ConstraintMode.PROVIDER_DEFAULT)