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Java > Open Source Codes > org > apache > ojb > broker > util > pooling > ByPassConnection


1 package org.apache.ojb.broker.util.pooling;
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.Logger;
19 import org.apache.ojb.broker.util.logging.LoggerFactory;
20 import org.apache.ojb.broker.util.WrappedConnection;
21
22 import java.sql.Connection JavaDoc;
23 import java.sql.SQLException JavaDoc;
24
25 /**
26  * Simple wrapper for connections that make some methods to no-op for
27  * use in managed environments.
28  *
29  * @author <a HREF="mailto:arminw@apache.org">Armin Waibel</a>
30  */
31 public class ByPassConnection extends WrappedConnection
32 {
33     private Logger log = LoggerFactory.getLogger(ByPassConnection.class);
34
35     public ByPassConnection(Connection c)
36     {
37         super(c);
38         this.activateConnection();
39     }
40
41     /**
42      * a no-op
43      */
44     public void setAutoCommit(boolean autoCommit) throws SQLException JavaDoc
45     {
46         /*
47         we ignore this. in managed environments it is not
48         allowed to change autoCommit state
49         */
50         if (log.isDebugEnabled()) log.debug("** we ignore setAutoCommit");
51     }
52
53     /**
54      * a no-op
55      */
56     public void commit() throws SQLException JavaDoc
57     {
58         /*
59         we ignore commit, cause this will do
60         e.g. the J2EE environment for us, when using
61         declarative or programmatic transaction in a j2ee container
62         */
63         if (log.isDebugEnabled()) log.debug("** we ignore commit");
64     }
65
66     /**
67      * no-op
68      */
69     public void rollback() throws SQLException JavaDoc
70     {
71         /*
72         arminw:
73         rollback of the connection should be done by the AppServer
74         so we ignore this call too. in beans user should use ctx.setRollbackOnly
75         method
76         */
77         if (log.isDebugEnabled()) log.debug("** we ignore rollback, done by server");
78     }
79 }
80
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