View Javadoc

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  
23  import javax.mail.internet.MimeMessage;
24  import java.util.Collection;
25  
26  /***
27   * Matches mail with a header set by Fetchpop X-fetched-from <br>
28   * fetchpop sets X-fetched-by to the "name" of the fetchpop fetch task.<br>
29   * This is used to match all mail fetched from a specific pop account.
30   * Once the condition is met the header is stripped from the message to prevent looping if the mail is re-inserted into the spool.
31   * 
32   * $Id: FetchedFrom.java 365582 2006-01-03 08:51:21 +0000 (mar, 03 gen 2006) bago $
33   */
34  
35  public class FetchedFrom extends GenericMatcher {
36      public Collection match(Mail mail) throws javax.mail.MessagingException {
37          MimeMessage message = mail.getMessage();
38          String fetch = message.getHeader("X-fetched-from", null);
39          if (fetch != null && fetch.equals(getCondition())) {
40              mail.getMessage().removeHeader("X-fetched-from");
41              return mail.getRecipients();
42          }
43          return null;
44      }
45  }