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1   /*
2    * Copyright 2004 Charles Blaxland
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package mnemosyne.lock;
17  
18  import mnemosyne.core.Transaction;
19  
20  /***
21   * @version $Id: NullLock.java,v 1.2 2004/08/12 14:01:06 charlesblaxland Exp $
22   */
23  public class NullLock implements Lock
24  {
25      public void acquireReadLock(Transaction transaction) throws DeadlockException, LockFailedException
26      {
27      }
28  
29      public void acquireWriteLock(Transaction transaction) throws DeadlockException, LockFailedException
30      {
31      }
32  
33      public void releaseLock(Transaction transaction)
34      {
35      }
36  }