| /******************************************************************************* |
| * 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 <code>Id</code> annotation is applied |
| * should be one of the following types: any Java primitive type; |
| * any primitive wrapper type; |
| * <code>String</code>; |
| * <code>java.util.Date</code>; |
| * <code>java.sql.Date</code>; |
| * <code>java.math.BigDecimal</code>; |
| * <code>java.math.BigInteger</code>. |
| * |
| * <p>The mapped column for the primary key of the entity is assumed |
| * to be the primary key of the primary table. If no <code>Column</code> annotation |
| * is specified, the primary key column name is assumed to be the name |
| * of the primary key property or field. |
| * |
| * <pre> |
| * Example: |
| * |
| * @Id |
| * public Long getId() { return id; } |
| * </pre> |
| * |
| * @see Column |
| * @see GeneratedValue |
| * |
| * @since Java Persistence 1.0 |
| */ |
| @Target({METHOD, FIELD}) |
| @Retention(RUNTIME) |
| |
| public @interface Id {} |