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Java > Open Source Codes > org > apache > ojb > broker > locking > LockHelper


1 package org.apache.ojb.broker.locking;
2
3 /* Copyright 2002-2005 The Apache Software Foundation
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17
18 import org.apache.ojb.broker.util.logging.LoggerFactory;
19 import org.apache.commons.lang.StringUtils;
20
21 /**
22  * @author <a HREF="mailto:arminw@apache.org">Armin Waibel</a>
23  * @version $Id: LockHelper.java,v 1.1.2.2 2005/12/21 22:25:32 tomdz Exp $
24  */
25 public class LockHelper
26 {
27     LockHelper()
28     {
29     }
30
31     /**
32      * maps IsolationLevel literals to the corresponding id
33      * @param isoLevel
34      * @return the id
35      */
36     public static int getIsolationLevelFor(String JavaDoc isoLevel)
37     {
38         if(isoLevel == null || StringUtils.isEmpty(isoLevel))
39         {
40             LoggerFactory.getDefaultLogger().debug(
41                     "[LockHelper] Specified isolation level string is 'null', using the default isolation level");
42             return IsolationLevels.IL_DEFAULT;
43         }
44         if (isoLevel.equalsIgnoreCase(IsolationLevels.LITERAL_IL_READ_UNCOMMITTED))
45         {
46             return IsolationLevels.IL_READ_UNCOMMITTED;
47         }
48         else if (isoLevel.equalsIgnoreCase(IsolationLevels.LITERAL_IL_READ_COMMITTED))
49         {
50             return IsolationLevels.IL_READ_COMMITTED;
51         }
52         else if (isoLevel.equalsIgnoreCase(IsolationLevels.LITERAL_IL_REPEATABLE_READ))
53         {
54             return IsolationLevels.IL_REPEATABLE_READ;
55         }
56         else if (isoLevel.equalsIgnoreCase(IsolationLevels.LITERAL_IL_SERIALIZABLE))
57         {
58             return IsolationLevels.IL_SERIALIZABLE;
59         }
60         else if (isoLevel.equalsIgnoreCase(IsolationLevels.LITERAL_IL_OPTIMISTIC))
61         {
62             return IsolationLevels.IL_OPTIMISTIC;
63         }
64         else if (isoLevel.equalsIgnoreCase(IsolationLevels.LITERAL_IL_NONE))
65         {
66             return IsolationLevels.IL_NONE;
67         }
68         LoggerFactory.getDefaultLogger().warn("[LockHelper] Unknown isolation-level '" + isoLevel + "', using default isolation level");
69         return IsolationLevels.IL_DEFAULT;
70     }
71 }
72
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