1. Project Clover database Tue Dec 20 2016 21:24:09 CET
  2. Package org.xwiki.store.locks.dummy.internal

File DummyLock.java

 

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Code metrics

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Classes

Class Line # Actions
DummyLock 35 3 0% 6 7
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Contributing tests

This file is covered by 8 tests. .

Source view

1    /*
2    * See the NOTICE file distributed with this work for additional
3    * information regarding copyright ownership.
4    *
5    * This is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU Lesser General Public License as
7    * published by the Free Software Foundation; either version 2.1 of
8    * the License, or (at your option) any later version.
9    *
10    * This software is distributed in the hope that it will be useful,
11    * but WITHOUT ANY WARRANTY; without even the implied warranty of
12    * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13    * Lesser General Public License for more details.
14    *
15    * You should have received a copy of the GNU Lesser General Public
16    * License along with this software; if not, write to the Free
17    * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18    * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
19    */
20    package org.xwiki.store.locks.dummy.internal;
21   
22    import java.util.concurrent.TimeUnit;
23    import java.util.concurrent.locks.Lock;
24    import java.util.concurrent.locks.Condition;
25    //import java.util.concurrent.locks.ReentrantLock;
26   
27    /**
28    * A fake lock.
29    * Used for cases when a lock is demanded by the code but the perticular operation does not require one.
30    * Also useful for disabling locking.
31    *
32    * @version $Id: 210bf51220b510b237c2e6ec53b62f0de539a7d4 $
33    * @since 4.3M2
34    */
 
35    public class DummyLock implements Lock
36    {
37    /** a default instance, can be always used, as this {@link Lock} is stateless. */
38    public static final DummyLock INSTANCE = new DummyLock();
39   
 
40  24 toggle @Override
41    public void lock()
42    {
43    // This is a really complicated operation.
44    }
45   
 
46  0 toggle @Override
47    public void lockInterruptibly()
48    {
49    // This one even more so.
50    }
51   
 
52  0 toggle @Override
53    public boolean tryLock()
54    {
55  0 return true;
56    }
57   
 
58  0 toggle @Override
59    public boolean tryLock(long time, TimeUnit unit)
60    {
61  0 return true;
62    }
63   
 
64  24 toggle @Override
65    public void unlock()
66    {
67    // Reverse of the above process.
68    }
69   
 
70  0 toggle @Override
71    public Condition newCondition() {
72  0 throw new UnsupportedOperationException();
73    }
74    }