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/*******************************************************************************
 * 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 the primary key of an entity.
 * The field or property to which the Id annotation is applied 
 * should be one of the following types: any Java primitive type; 
 * any primitive wrapper type; 
 * String; 
 * java.util.Date; 
 * java.sql.Date; 
 * java.math.BigDecimal;
 * java.math.BigInteger.
 *
 * 

The mapped column for the primary key of the entity is assumed * to be the primary key of the primary table. If no Column annotation * is specified, the primary key column name is assumed to be the name * of the primary key property or field. * *

 *   Example:
 *
 *   @Id
 *   public Long getId() { return id; }
 * 
* * @see Column * @see GeneratedValue * * @since Java Persistence 1.0 */ @Target({METHOD, FIELD}) @Retention(RUNTIME) public @interface Id {}




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