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 { ... }
 

Since:

Java Persistence 1.0

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
PrimaryKeyJoinColumn[]	value One or more PrimaryKeyJoinColumn annotations.

Element Detail

value

public abstract PrimaryKeyJoinColumn[] value

One or more PrimaryKeyJoinColumn annotations.