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Java > Open Source Codes > org > exolab > jms > net > invoke > RecursiveCallback


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41  * Copyright 2004 (C) Exoffice Technologies Inc. All Rights Reserved.
42  *
43  * $Id: RecursiveCallback.java,v 1.1 2005/04/02 13:50:16 tanderson Exp $
44  */
45 package org.exolab.jms.net.invoke;
46
47
48 import org.exolab.jms.net.CallbackService;
49
50
51 /**
52  * Callback which is invoked recursively.
53  *
54  * @version $Revision: 1.1 $ $Date: 2005/04/02 13:50:16 $
55  * @author <a HREF="mailto:tma@netspace.net.au">Tim Anderson</a>
56  */
57 public class RecursiveCallback extends LoggingCallback {
58
59     /**
60      * The callback service.
61      */
62     private final CallbackService _service;
63
64     /**
65      * The depth of recursion.
66      */
67     private final int _depth;
68
69     /**
70      * The no. of times invoked. On reaching {@link #_depth}, is reset to
71      * <code>0</code>.
72      */
73     private int _count;
74
75
76     /**
77      * Construct a new <code>RecursiveCallback</code>.
78      *
79      * @param depth the depth of the recursion
80      */
81     public RecursiveCallback(CallbackService service, int depth) {
82         _service = service;
83         _depth = depth;
84     }
85
86     /**
87      * Invoke the callback
88      *
89      * @param object the invocation data
90      */
91     public void invoke(Object JavaDoc object) {
92         super.invoke(object);
93         if (++_count < _depth) {
94             _service.invoke(object);
95         } else {
96             _count = 0;
97         }
98     }
99
100
101 }
102
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