StatelessSessionBean


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 enterprise.interceptor_stateless_ejb;
24  
25  import javax.ejb.Stateless  ;
26  import javax.interceptor.Interceptors;
27  
28  // This bean uses two interceptors to validate
29  // the input to its (only) business method.
30  // Note that a single interceptor would suffice
31  // but to demonstrate the use of interceptor
32  // chaining, we use two interceptors
33  
34  @Stateless  
35  @Interceptors( { NullChecker.class, ArgumentsChecker.class })
36  public class StatelessSessionBean
37      implements StatelessSession {
38  
39      // This business method is called after
40      // the above two interceptor's @AroundInvoke
41      // methods are invoked. Hence it is guaranteed
42      // that the argument to this method is not null
43      // and it starts with a letter
44      public String   initUpperCase(String   val) {
45          String   first = val.substring(0, 1);
46          return first.toUpperCase() + val.substring(1);
47      }
48  
49  }
50

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