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Java > Open Source Codes > com > caucho > log > SubHandler


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.log;
31
32 import com.caucho.util.L10N;
33
34 import java.util.logging.Handler JavaDoc;
35 import java.util.logging.LogRecord JavaDoc;
36
37 /**
38  * Proxy for an underlying handler, e.g. to handle different
39  * logging levels.
40  */
41 public class SubHandler extends Handler JavaDoc {
42   private static final L10N L = new L10N(SubHandler.class);
43   
44   private Handler JavaDoc _handler;
45
46   SubHandler(Handler JavaDoc handler)
47   {
48     _handler = handler;
49   }
50
51   /**
52    * Publishes the record.
53    */
54   public void publish(LogRecord JavaDoc record)
55   {
56     if (record.getLevel().intValue() < getLevel().intValue())
57       return;
58
59     if (_handler != null)
60       _handler.publish(record);
61   }
62
63   /**
64    * Flushes the buffer.
65    */
66   public void flush()
67   {
68     if (_handler != null)
69       _handler.flush();
70   }
71
72   /**
73    * Closes the handler.
74    */
75   public void close()
76   {
77     if (_handler != null)
78       _handler.close();
79
80     _handler = null;
81   }
82
83   /**
84    * Returns the hash code.
85    */
86   public int hashCode()
87   {
88     if (_handler == null)
89       return super.hashCode();
90     else
91     return _handler.hashCode();
92   }
93
94   /**
95    * Test for equality.
96    */
97   public boolean equals(Object JavaDoc o)
98   {
99     if (this == o)
100       return true;
101     else if (o == null)
102       return false;
103
104     if (_handler == null)
105       return false;
106     else if (o.equals(_handler))
107       return true;
108
109     if (! (o instanceof SubHandler))
110       return false;
111
112     SubHandler subHandler = (SubHandler) o;
113
114     return _handler.equals(subHandler._handler);
115   }
116
117   public String JavaDoc toString()
118   {
119     return "SubHandler[" + _handler + "]";
120   }
121 }
122
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