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

/**
 * This annotation must be specified for persistent fields or properties of type java.util.Date
 * and java.util.Calendar. It may only be specified for fields or properties of these types.
 * 
 * The Temporal annotation may be used in conjunction with the {@link Basic} annotation, the
 * {@link Id} annotation, or the {@link ElementCollection} annotation (when the element collection value is of
 * such a temporal type.
 *
 * 
 *     Example:
 * 
 *     @Temporal(DATE)
 *     protected java.util.Date endDate;
 * 
 * @since Java Persistence 1.0
 */
@Target({ANNOTATION_TYPE, METHOD, FIELD})
@Retention(RUNTIME)
public @interface Temporal
{
    /**
     * The type used in mapping java.util.Date or java.util.Calendar.
     * @return type
     */
    TemporalType value();
}