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Java > Open Source Codes > org > apache > james > transport > matchers > HasHeader


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17
18 package org.apache.james.transport.matchers;
19
20 import org.apache.mailet.GenericMatcher;
21 import org.apache.mailet.Mail;
22
23 import java.util.Collection JavaDoc;
24
25 /**
26  * use: <mailet match="HasHeader=<header>" class="..." />
27  *
28  * This matcher simply checks to see if the header named is present.
29  * If complements the AddHeader mailet.
30  *
31  * TODO: support lists of headers and values, e.g, match="{<header>[=value]}+"
32  * [will require a complete rewrite from the current trivial one-liner]
33  *
34  */
35 public class HasHeader extends GenericMatcher {
36
37     public Collection JavaDoc match(Mail mail) throws javax.mail.MessagingException JavaDoc {
38         return (mail.getMessage().getHeader(getCondition(), null) != null) ? mail.getRecipients() : null;
39     }
40 }
41
42
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