001    package org.apache.ojb.broker.util.pooling;
002    
003    /* Copyright 2002-2005 The Apache Software Foundation
004     *
005     * Licensed under the Apache License, Version 2.0 (the "License");
006     * you may not use this file except in compliance with the License.
007     * You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    import org.apache.ojb.broker.util.logging.Logger;
019    import org.apache.ojb.broker.util.logging.LoggerFactory;
020    import org.apache.ojb.broker.util.WrappedConnection;
021    
022    import java.sql.Connection;
023    import java.sql.SQLException;
024    
025    /**
026     * Simple wrapper for connections that make some methods to no-op for
027     * use in managed environments.
028     *
029     * @author <a href="mailto:arminw@apache.org">Armin Waibel</a>
030     */
031    public class ByPassConnection extends WrappedConnection
032    {
033        private Logger log = LoggerFactory.getLogger(ByPassConnection.class);
034    
035        public ByPassConnection(Connection c)
036        {
037            super(c);
038            this.activateConnection();
039        }
040    
041        /**
042         * a no-op
043         */
044        public void setAutoCommit(boolean autoCommit) throws SQLException
045        {
046            /*
047            we ignore this. in managed environments it is not
048            allowed to change autoCommit state
049            */
050            if (log.isDebugEnabled()) log.debug("** we ignore setAutoCommit");
051        }
052    
053        /**
054         * a no-op
055         */
056        public void commit() throws SQLException
057        {
058            /*
059            we ignore commit, cause this will do
060            e.g. the J2EE environment for us, when using
061            declarative or programmatic transaction in a j2ee container
062            */
063            if (log.isDebugEnabled()) log.debug("** we ignore commit");
064        }
065    
066        /**
067         * no-op
068         */
069        public void rollback() throws SQLException
070        {
071            /*
072            arminw:
073            rollback of the connection should be done by the AppServer
074            so we ignore this call too. in beans user should use ctx.setRollbackOnly
075            method
076            */
077            if (log.isDebugEnabled()) log.debug("** we ignore rollback, done by server");
078        }
079    }