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The Java Persistence API (JPA) : a standard interface-based Java model abstraction of persistence, developed by the JCP.

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/*
 * Copyright (c) 2008, 2009, 2011 Oracle, Inc. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.  The Eclipse Public License is available
 * at http://www.eclipse.org/legal/epl-v10.html and the Eclipse Distribution License
 * is available at http://www.eclipse.org/org/documents/edl-v10.php.
 */
package javax.persistence;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Used to override mappings of multiple relationship properties or fields.
 *
 *  *
 *    Example:
 * 
 *    @MappedSuperclass
 *    public class Employee {
 * 
 *        @Id protected Integer id;
 *        @Version protected Integer version;
 *        @ManyToOne protected Address address;
 *        @OneToOne protected Locker locker;
 * 
 *        public Integer getId() { ... }
 *        public void setId(Integer id) { ... }
 *        public Address getAddress() { ... }
 *        public void setAddress(Address address) { ... }
 *        public Locker getLocker() { ... }
 *        public void setLocker(Locker locker) { ... }
 *        ...
 *    }
 * 
 *    @Entity
 *    @AssociationOverrides({
 *        @AssociationOverride(
 *                   name="address",
 *                   joinColumns=@JoinColumn("ADDR_ID")),
 *        @AttributeOverride(
 *                   name="locker",
 *                   joinColumns=@JoinColumn("LCKR_ID"))
 *        })
 *    public PartTimeEmployee { ... }
 * 
 * @see AssociationOverride
 * @since Java Persistence 1.0
 */
@Target({TYPE, METHOD, FIELD})
@Retention(RUNTIME)
public @interface AssociationOverrides
{

    AssociationOverride[] value();
}