SecondaryTables


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  ;
26  import java.lang.annotation.Retention  ;
27  import static java.lang.annotation.ElementType.TYPE  ;
28  import static java.lang.annotation.RetentionPolicy.RUNTIME  ;
29  
30  /**
31   * This annotation is used to specify multiple secondary tables 
32   * for an entity.
33   *
34   * <pre>
35   *    Example 1: Multiple secondary tables assuming primary key columns are named the same in all tables.
36   *
37   *    &#064;Entity
38   *    &#064;Table(name="EMPLOYEE")
39   *    &#064;SecondaryTables({
40   *        &#064;SecondaryTable(name="EMP_DETAIL"),
41   *        &#064;SecondaryTable(name="EMP_HIST")
42   *    })
43   *    public class Employee { ... }
44   *    
45   *    Example 2: Multiple secondary tables with differently named primary key columns. 
46   *
47   *    &#064;Entity
48   *    &#064;Table(name="EMPLOYEE")
49   *    &#064;SecondaryTables({
50   *        &#064;SecondaryTable(name="EMP_DETAIL", 
51   *            pkJoinColumns=&#064;PrimaryKeyJoinColumn(name="EMPL_ID")),
52   *        &#064;SecondaryTable(name="EMP_HIST", 
53   *            pkJoinColumns=&#064;PrimaryKeyJoinColumn(name="EMPLOYEE_ID"))
54   *    })
55   *    public class Employee { ... }
56   * </pre>
57   *
58   * @since Java Persistence 1.0
59   */
60  @Target  (TYPE) 
61  @Retention  (RUNTIME)
62  
63  public @interface SecondaryTables {
64  
65      /** The secondary tables for an entity. */
66      SecondaryTable[] value();
67  }
68
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