JtTemplateMethod


1   package Jt;
2   import java.util.*;
3   import java.lang.reflect.*;
4   import java.beans.*;
5   import java.io.*;
6   
7   
8   /**
9    * Jt Implementation of the Template Method pattern.
10   */
11  
12  
13  abstract public class JtTemplateMethod extends JtObject {
14  
15  
16  
17    public JtTemplateMethod() {
18    }
19  
20  
21    /**
22      * Define the skeleton of the processMessage algorithm, deferring some steps 
23      * to the subclasses. 
24      *
25      * @param message Jt Message   
26      */
27  
28  
29    public Object   processMessage (Object   message) {
30  
31     String   msgid = null;
32     JtMessage e = (JtMessage) message;
33     Object   content;
34     Object   data;
35  
36  
37       if (e == null)
38      return null;
39  
40       msgid = (String  ) e.getMsgId ();
41  
42       if (msgid == null)
43      return null;
44  
45       content = e.getMsgContent();
46       data = e.getMsgData ();
47  
48       // Remove this object
49       if (msgid.equals ("JtREMOVE")) {
50         return (this);     
51       }
52  
53     
54            
55       handleError ("JtTemplateMethod.processMessage: invalid message id:" + msgid);
56       return (null);
57  
58    }
59  
60  
61  }
62

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