https://github.com/javaee/jpa-spec: Java(TM) Persistence API 
Copyright (c) 2008 - 2013 Oracle Corporation. 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.
Contributors:
    Linda DeMichiel - Java Persistence 2.1
    Linda DeMichiel - Java Persistence 2.0

/*******************************************************************************
 * Copyright (c) 2008 - 2013 Oracle Corporation. 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.
 *
 * Contributors:
 *     Linda DeMichiel - Java Persistence 2.1
 *     Linda DeMichiel - Java Persistence 2.0
 *
 ******************************************************************************/ 
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;


Specifies a persistent field or property of an entity whose value is an instance of an embeddable class. The embeddable class must be annotated as Embeddable. 
 The AttributeOverride, AttributeOverrides,
AssociationOverride, and AssociationOverrides
annotations may be used to override mappings declared or defaulted
by the embeddable class.

  Example:
  @Embedded
  @AttributeOverrides({
      @AttributeOverride(name="startDate", column=@Column("EMP_START")),
      @AttributeOverride(name="endDate", column=@Column("EMP_END"))
  })
  public EmploymentPeriod getEmploymentPeriod() { ... }



See Also:
Since:Java Persistence 1.0
/**
 * Specifies a persistent field or property of an entity whose 
 * value is an instance of an embeddable class. The embeddable 
 * class must be annotated as {@link Embeddable}.
 *
 * <p> The <code>AttributeOverride</code>, <code>AttributeOverrides</code>,
 * <code>AssociationOverride</code>, and <code>AssociationOverrides</code>
 * annotations may be used to override mappings declared or defaulted
 * by the embeddable class.
 *
 * <pre>
 *   Example:
 *
 *   &#064;Embedded
 *   &#064;AttributeOverrides({
 *       &#064;AttributeOverride(name="startDate", column=&#064;Column("EMP_START")),
 *       &#064;AttributeOverride(name="endDate", column=&#064;Column("EMP_END"))
 *   })
 *   public EmploymentPeriod getEmploymentPeriod() { ... }
 * </pre>
 *
 * @see Embeddable
 * @see AttributeOverride
 * @see AttributeOverrides
 * @see AssociationOverride
 * @see AssociationOverrides
 *
 * @since Java Persistence 1.0
 */
@Target({METHOD, FIELD})
@Retention(RUNTIME)

public @interface Embedded {
}