javax.persistence

Annotation Type JoinColumns

@Target(value={METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface JoinColumns

Defines mapping for composite foreign keys. This annotation groups JoinColumn annotations for the same relationship.

When the JoinColumns annotation is used, both the name and the referencedColumnName elements must be specified in each such JoinColumn annotation.

    Example:
    @ManyToOne
    @JoinColumns({
        @JoinColumn(name="ADDR_ID", referencedColumnName="ID"),
        @JoinColumn(name="ADDR_ZIP", referencedColumnName="ZIP")
    })
    public Address getAddress() { return address; }
 

Since:

Java Persistence 1.0

See Also:

JoinColumn

Required Element Summary

Required Elements

Modifier and Type	Required Element and Description
JoinColumn[]	value The join columns that map the relationship.

Element Detail

value

public abstract JoinColumn[] value

The join columns that map the relationship.