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19  
20  
21  
22  package org.apache.james.transport.matchers;
23  
24  import org.apache.mailet.base.GenericMatcher;
25  import org.apache.mailet.Mail;
26  
27  import java.util.Collection;
28  
29  /**
30   * <P>Matches mails that are sent by a null sender.</P>
31   * <PRE><CODE>
32   * &lt;mailet match=&quot;SenderIsNull&quot; class=&quot;&lt;any-class&gt;&quot;&gt;
33   * </CODE></PRE>
34   *
35   * @version CVS $Revision: 713949 $ $Date: 2008-11-14 07:40:21 +0000 (Fri, 14 Nov 2008) $
36   * @since 2.2.0
37   */
38  public class SenderIsNull extends GenericMatcher {
39  
40      public Collection match(Mail mail) {
41          if (mail.getSender() == null) {
42              return mail.getRecipients();
43          } else {
44              return null;
45          }
46      }
47  }