001 package org.apache.ojb.broker.accesslayer;
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.metadata.JdbcConnectionDescriptor;
019 import org.apache.ojb.broker.util.logging.Logger;
020 import org.apache.ojb.broker.util.logging.LoggerFactory;
021
022 import java.sql.Connection;
023 import java.sql.SQLException;
024
025 /**
026 * Base implementation without connection pooling.
027 *
028 * @author <a href="mailto:armin@codeAuLait.de">Armin Waibel</a>
029 * @version $Id: ConnectionFactoryNotPooledImpl.java,v 1.1 2007-08-24 22:17:30 ewestfal Exp $
030 */
031 public class ConnectionFactoryNotPooledImpl extends ConnectionFactoryAbstractImpl
032 {
033 private Logger log = LoggerFactory.getLogger(ConnectionFactoryNotPooledImpl.class);
034
035 public Connection checkOutJdbcConnection(JdbcConnectionDescriptor jcd) throws LookupException
036 {
037 if (log.isDebugEnabled())
038 {
039 log.debug("checkOutJdbcConnection: this implementation always return a new Connection");
040 }
041 final Connection conn = newConnectionFromDriverManager(jcd);
042 validateConnection(conn, jcd);
043 // Connection is now guaranteed to be valid (else validateConnection must throw exception)
044 return conn;
045 }
046
047 protected void validateConnection(Connection conn, JdbcConnectionDescriptor jcd)
048 throws LookupException
049 {
050 if (conn == null)
051 {
052 log.error(getJcdDescription(jcd) + " failed, DriverManager returned null");
053 throw new LookupException("No Connection returned from DriverManager");
054 }
055 try
056 {
057 if (conn.isClosed())
058 {
059 log.error(getJcdDescription(jcd) + " is invalid (closed)");
060 throw new LookupException("Could not create valid connection, connection was " +
061 conn);
062 }
063 }
064 catch (SQLException e)
065 {
066 log.error(getJcdDescription(jcd) + " failed validation with exception");
067 throw new LookupException("Connection validation failed", e);
068 }
069 }
070
071 public void releaseJdbcConnection(JdbcConnectionDescriptor jcd, Connection con)
072 throws LookupException
073 {
074 try
075 {
076 con.close();
077 }
078 catch (SQLException e)
079 {
080 log.warn("Connection.close() failed, message was " + e.getMessage());
081 }
082 }
083
084 }