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Java > Open Source Codes > javax > persistence > Id


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the License). You may not use this file except in
5  * compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9  * glassfish/bootstrap/legal/CDDLv1.0.txt.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * Header Notice in each file and include the License file
15  * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16  * If applicable, add the following below the CDDL Header,
17  * with the fields enclosed by brackets [] replaced by
18  * you own identifying information:
19  * "Portions Copyrighted [year] [name of copyright owner]"
20  *
21  * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22  */
23 package javax.persistence;
24
25 import java.lang.annotation.Target JavaDoc;
26 import java.lang.annotation.Retention JavaDoc;
27 import static java.lang.annotation.ElementType.FIELD JavaDoc;
28 import static java.lang.annotation.ElementType.METHOD JavaDoc;
29 import static java.lang.annotation.RetentionPolicy.RUNTIME JavaDoc;
30
31 /**
32  * Specifies the primary key property or field of an entity.
33  *
34  * <pre>
35  * Example:
36  *
37  * &#064;Id
38  * public Long getId() { return id; }
39  * </pre>
40  *
41  * @since Java Persistence 1.0
42  */
43 @Target JavaDoc({METHOD, FIELD})
44 @Retention JavaDoc(RUNTIME)
45
46 public @interface Id {}
47
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