Clover Coverage Report - perfectjpattern(Aggregated)
Coverage timestamp: Sat Feb 28 2009 14:35:07 CET
../../../../../../img/srcFileCovDistChart10.png 0% of files have more coverage
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  NullResult       Line # 38 1 0% 2 0 100% 1.0
 
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1    //----------------------------------------------------------------------
2    //
3    // PerfectJPattern: "Design patterns are good but components are better!"
4    // NullResult.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.command;
22   
23    import org.perfectjpattern.core.api.creational.singleton.ISingleton;
24   
25    /**
26    * Null Object Pattern implementation of Command <code>Result</code>.
27    * Prevents different <code>Receiver</code> implementations from pushing
28    * <code>null</code> back into the <code>Command</code>'s result value.
29    * <br/><br/>
30    * <code>NullResult</code> is a Singleton therefore it can not be directly
31    * instantiated, neither it may be extended.
32    * <br/><br/>
33    *
34    * @author <a href="mailto:bravegag@hotmail.com">Giovanni Azua</a>
35    * @version $Revision: 1.0 $ $Date: Jun 19, 2007 10:17:38 PM $
36    */
37    public final
 
38    class NullResult
39    implements ISingleton
40    {
41    //------------------------------------------------------------------------
42    // public
43    //------------------------------------------------------------------------
44    /**
45    * Returns Singleton instance of <code>NullResult</code>.
46    *
47    * @return Singleton instance of <code>NullResult</code>.
48    */
 
49  2 toggle public static NullResult
50    getInstance()
51    {
52  2 return INSTANCE;
53    }
54   
55    //------------------------------------------------------------------------
56    // private
57    //------------------------------------------------------------------------
 
58  1 toggle private
59    NullResult()
60    {
61    // do nothing
62    }
63   
64    //------------------------------------------------------------------------
65    // members
66    //------------------------------------------------------------------------
67    /**
68    * Singleton instance of <code>NullResult</code>
69    */
70    private static final NullResult INSTANCE = new NullResult();
71    }