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Java > Open Source Codes > org > jacorb > notification > filter > etcl > EventNameShorthandNode


1 package org.jacorb.notification.filter.etcl;
2
3 /*
4  * JacORB - a free Java ORB
5  *
6  * Copyright (C) 1999-2004 Gerald Brose
7  *
8  * This library is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Library General Public
10  * License as published by the Free Software Foundation; either
11  * version 2 of the License, or (at your option) any later version.
12  *
13  * This library is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Library General Public License for more details.
17  *
18  * You should have received a copy of the GNU Library General Public
19  * License along with this library; if not, write to the Free
20  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21  *
22  */
23
24 import org.jacorb.notification.filter.EvaluationContext;
25 import org.jacorb.notification.filter.EvaluationException;
26 import org.jacorb.notification.filter.EvaluationResult;
27 import org.jacorb.notification.interfaces.Message;
28
29 /**
30  * @author Alphonse Bendt
31  * @version $Id: EventNameShorthandNode.java,v 1.6 2005/02/14 00:07:08 alphonse.bendt Exp $
32  */
33
34 public class EventNameShorthandNode extends ETCLComponentName
35 {
36     private static final AbstractTCLNode expandedPath_;
37     private static final String JavaDoc COMP_NAME = "$.header.fixed_header.event_name";
38     public static final String JavaDoc SHORT_NAME = "event_name";
39
40     static {
41         try
42         {
43             expandedPath_ = TCLParser.parse( COMP_NAME );
44             expandedPath_.acceptInOrder( new TCLCleanUp() );
45         }
46         catch (Exception JavaDoc e)
47         {
48             // should never happen
49 throw new RuntimeException JavaDoc(e.getMessage());
50         }
51     }
52
53     public EventNameShorthandNode()
54     {
55         setName("EventNameShorthandNode");
56     }
57
58     public String JavaDoc getComponentName()
59     {
60         return COMP_NAME;
61     }
62
63     public void acceptInOrder(AbstractTCLVisitor v)
64     {
65     }
66
67     public void acceptPostOrder(AbstractTCLVisitor v)
68     {
69     }
70
71     public void acceptPreOrder(AbstractTCLVisitor v)
72     {
73     }
74
75     public EvaluationResult evaluate( EvaluationContext context )
76         throws EvaluationException
77     {
78         Message _event = context.getCurrentMessage();
79         EvaluationResult _result = new EvaluationResult();
80
81         switch (_event.getType())
82         {
83             case Message.TYPE_ANY:
84                 _result = expandedPath_.evaluate(context);
85                 break;
86
87             case Message.TYPE_STRUCTURED:
88                 String JavaDoc _domainName = _event.toStructuredEvent().header.fixed_header.event_name;
89                 _result.setString(_domainName);
90                 break;
91
92             default:
93                 throw new RuntimeException JavaDoc();
94         }
95
96         return _result;
97     }
98
99     public String JavaDoc toString()
100     {
101         return COMP_NAME;
102     }
103
104 }
105
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