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.

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
ForeignKey	foreignKey (Optional) The foreign key constraint specification for the join columns.

Element Detail

value

public abstract PrimaryKeyJoinColumn[] value

One or more PrimaryKeyJoinColumn annotations.

foreignKey

public abstract ForeignKey foreignKey

(Optional) The foreign key constraint specification for the join columns. This is used only if table generation is in effect. Default is provider defined.

Returns:

The foreign key specification

Default:

@javax.persistence.ForeignKey