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1   /************************************************************************
2    * Copyright (c) 2000-2006 The Apache Software Foundation.             *
3    * All rights reserved.                                                *
4    * ------------------------------------------------------------------- *
5    * Licensed under the Apache License, Version 2.0 (the "License"); you *
6    * may not use this file except in compliance with the License. You    *
7    * may obtain a copy of the License at:                                *
8    *                                                                     *
9    *     http://www.apache.org/licenses/LICENSE-2.0                      *
10   *                                                                     *
11   * Unless required by applicable law or agreed to in writing, software *
12   * distributed under the License is distributed on an "AS IS" BASIS,   *
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or     *
14   * implied.  See the License for the specific language governing       *
15   * permissions and limitations under the License.                      *
16   ***********************************************************************/
17  
18  package org.apache.james.transport.matchers;
19  
20  import org.apache.mailet.GenericMatcher;
21  import org.apache.mailet.Mail;
22  import org.apache.mailet.MailAddress;
23  
24  import java.util.Collection;
25  
26  /***
27   * <P>Matches mails that are sent by a null sender.</P>
28   * <PRE><CODE>
29   * &lt;mailet match=&quot;SenderIsNull&quot; class=&quot;&lt;any-class&gt;&quot;&gt;
30   * </CODE></PRE>
31   *
32   * @version CVS $Revision: 365582 $ $Date: 2006-01-03 08:51:21 +0000 (mar, 03 gen 2006) $
33   * @since 2.2.0
34   */
35  public class SenderIsNull extends GenericMatcher {
36  
37      public Collection match(Mail mail) {
38          if (mail.getSender() == null) {
39              return mail.getRecipients();
40          } else {
41              return null;
42          }
43      }
44  }