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
 PrimaryKeyJoinColumn[] value
          One or more PrimaryKeyJoinColumn annotations.
 

Element Detail

value

public abstract PrimaryKeyJoinColumn[] value
One or more PrimaryKeyJoinColumn annotations.



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Generated on 10-February-2011 12:41