Clover Coverage Report - perfectjpattern(Aggregated)
Coverage timestamp: Sat Feb 28 2009 14:35:07 CET
Overview   Package   File
    FRAMES   NO FRAMES     
../../../../../../img/srcFileCovDistChart10.png 0% of files have more coverage
2   136   8   0.25
0   53   4   8
8     1  
1    
23.1% of code in this file is excluded from these metrics.
 
  NullHandler       Line # 35 2 23.1% 8 0 100% 1.0
 
  (4)
 
1    //----------------------------------------------------------------------
2    //
3    // PerfectJPattern: "Design patterns are good but components are better!"
4    // NullHandler.java Copyright (c) 2009 Giovanni Azua Garcia
5    // bravegag@hotmail.com
6    //
7    // This program is free software; you can redistribute it and/or
8    // modify it under the terms of the GNU General Public License
9    // as published by the Free Software Foundation; either version 3
10    // of the License, or (at your option) any later version.
11    //
12    // This program is distributed in the hope that it will be useful,
13    // but WITHOUT ANY WARRANTY; without even the implied warranty of
14    // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15    // GNU General Public License for more details.
16    //
17    // You should have received a copy of the GNU General Public License
18    // along with this program; if not, see <http://www.gnu.org/licenses/>.
19    //
20    //----------------------------------------------------------------------
21    package org.perfectjpattern.core.api.behavioral.chainofresponsibility;
22   
23    import org.perfectjpattern.core.api.creational.singleton.ISingleton;
24   
25    /**
26    * Null Object Pattern implementation of <code>IHandler</code>.
27    * <br/><br/>
28    * <code>NullHandler</code> is a Singleton therefore it may not be directly
29    * instantiated, neither it may be extended.
30    *
31    * @author <a href="mailto:bravegag@hotmail.com">Giovanni Azua</a>
32    * @version $Revision: 1.0 $ $Date: Jun 23, 2007 1:40:23 PM $
33    */
34    public final
 
35    class NullHandler
36    implements IHandler<Object>, ISingleton
37    {
38    //------------------------------------------------------------------------
39    // public
40    //------------------------------------------------------------------------
41    /**
42    * Returns Singleton instance of <code>NullHandler</code>.
43    *
44    * @return Singleton instance of <code>NullHandler</code>.
45    */
 
46  26 toggle public static NullHandler
47    getInstance()
48    {
49  26 return INSTANCE;
50    }
51   
52    //------------------------------------------------------------------------
53    /**
54    * {@inheritDoc}
55    */
 
56  1 toggle public IHandler<Object>
57    getSuccessor()
58    throws UnsupportedOperationException
59    {
60    throw new UnsupportedOperationException("'NullHandler' does not " +
61    "support method getSuccessor().");
62    }
63   
64    //------------------------------------------------------------------------
65    /**
66    * {@inheritDoc}
67    */
 
68  2 toggle public void
69    start(Object aRequest)
70    throws IllegalArgumentException
71    {
72    // do nothing
73    }
74   
75    //------------------------------------------------------------------------
76    /**
77    * {@inheritDoc}
78    */
 
79  1 toggle public boolean
80    canHandle(Object aRequest)
81    throws IllegalArgumentException
82    {
83  1 return true;
84    }
85   
86    //------------------------------------------------------------------------
87    /**
88    * {@inheritDoc}
89    */
 
90  1 toggle public void
91    handle(Object aRequest)
92    {
93    // do nothing
94    }
95   
96    //------------------------------------------------------------------------
97    /**
98    * {@inheritDoc}
99    */
 
100  1 toggle public void
101    setSuccessor(IHandler<Object> aSuccessor)
102    throws UnsupportedOperationException
103    {
104    throw new UnsupportedOperationException("'NullHandler' does not " +
105    "support method setSuccessor().");
106    }
107   
108    //------------------------------------------------------------------------
109    /**
110    * {@inheritDoc}
111    */
 
112  1 toggle public void
113    setChainStrategy(IChainStrategy aStrategy)
114    throws IllegalArgumentException
115    {
116    throw new UnsupportedOperationException("'NullHandler' does not " +
117    "support method setChainStrategy().");
118    }
119   
120    //------------------------------------------------------------------------
121    // private
122    //------------------------------------------------------------------------
 
123  2 toggle private
124    NullHandler()
125    {
126    // do nothing
127    }
128   
129    //------------------------------------------------------------------------
130    // members
131    //------------------------------------------------------------------------
132    /**
133    * Singleton instance of <code>NullHandler</code>
134    */
135    private static final NullHandler INSTANCE = new NullHandler();
136    }
 
CloverReport generated by Clover Code Coverage v2.4.2
Sat Feb 28 2009 14:35:10 CET.		   Clover: Open Source License registered to perfectjpattern.