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1   /*
2    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
3    * The software in this package is published under the terms of the CPAL v1.0
4    * license, a copy of which has been included with this distribution in the
5    * LICENSE.txt file.
6    */
7   package org.mule.transport.email.filters;
8   
9   import org.mule.routing.filters.RegExFilter;
10  import org.mule.util.ClassUtils;
11  
12  import javax.mail.Message;
13  import javax.mail.MessagingException;
14  
15  /**
16   * <code>MailSubjectRegExFilter</code> applies a regular expression to a Mail
17   * Message subject.
18   */
19  public class MailSubjectRegExFilter extends AbstractMailFilter
20  {
21      private RegExFilter filter = new RegExFilter();
22  
23      public boolean accept(Message message)
24      {
25          try
26          {
27              return filter.accept(message.getSubject());
28          }
29          catch (MessagingException e)
30          {
31              logger.warn("Failed to read message subject: " + e.getMessage(), e);
32              return false;
33          }
34      }
35  
36      public void setExpression(String pattern)
37      {
38          filter.setPattern(pattern);
39      }
40  
41      public String getExpression()
42      {
43          return filter.getPattern();
44      }
45  
46      public boolean equals(Object obj)
47      {
48          if (this == obj) return true;
49          if (obj == null || getClass() != obj.getClass()) return false;
50  
51          final MailSubjectRegExFilter other = (MailSubjectRegExFilter) obj;
52          return ClassUtils.equal(filter, other.filter);
53      }
54  
55      public int hashCode()
56      {
57          return ClassUtils.hash(new Object[]{this.getClass(), filter});
58      }
59  }