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19  
20  package org.apache.james.transport.matchers;
21  
22  import org.apache.mailet.GenericMatcher;
23  import org.apache.mailet.Mail;
24  import org.apache.mailet.MailAddress;
25  
26  import java.util.Collection;
27  
28  /***
29   * <P>Matches mails that are sent by a null sender.</P>
30   * <PRE><CODE>
31   * &lt;mailet match=&quot;SenderIsNull&quot; class=&quot;&lt;any-class&gt;&quot;&gt;
32   * </CODE></PRE>
33   *
34   * @version CVS $Revision: 494012 $ $Date: 2007-01-08 10:23:58 +0000 (Mon, 08 Jan 2007) $
35   * @since 2.2.0
36   */
37  public class SenderIsNull extends GenericMatcher {
38  
39      public Collection match(Mail mail) {
40          if (mail.getSender() == null) {
41              return mail.getRecipients();
42          } else {
43              return null;
44          }
45      }
46  }