javax.persistence.JoinColumns Maven / Gradle / Ivy
// $Id: JoinColumns.java 17752 2009-10-15 01:19:21Z [email protected] $
// EJB3 Specification Copyright 2004-2009 Sun Microsystems, Inc.
package javax.persistence;
import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* 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; }
*
*
* @see JoinColumn
*
* @since Java Persistence 1.0
*/
@Target({METHOD, FIELD})
@Retention(RUNTIME)
public @interface JoinColumns {
/**
* The join columns that map the relationship.
*/
JoinColumn[] value();
}