001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  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    package org.apache.servicemix.jdbc;
018    
019    import java.sql.Connection;
020    import java.sql.SQLException;
021    
022    import org.apache.commons.logging.Log;
023    import org.apache.commons.logging.LogFactory;
024    import org.apache.servicemix.finder.FactoryFinder;
025    import org.apache.servicemix.jdbc.adapter.DefaultJDBCAdapter;
026    
027    public final class JDBCAdapterFactory {
028    
029        private static final Log LOG = LogFactory.getLog(JDBCAdapterFactory.class);
030        private static FactoryFinder factoryFinder = new FactoryFinder("META-INF/services/org/apache/servicemix/jdbc/");
031    
032        private JDBCAdapterFactory() {
033        }
034        
035        public static JDBCAdapter getAdapter(Connection connection) {
036            JDBCAdapter adapter = null;
037            try {
038    
039                // Make the filename file system safe.
040                String driverName = connection.getMetaData().getDriverName();
041                driverName = driverName.replaceAll("[^a-zA-Z0-9\\-]", "_").toLowerCase();
042    
043                try {
044                    adapter = (JDBCAdapter) factoryFinder.newInstance(driverName);
045                    LOG.info("Database driver recognized: [" + driverName + "]");
046                } catch (Throwable e) {
047                    LOG.warn("Database driver NOT recognized: [" + driverName
048                            + "].  Will use default JDBC implementation.");
049                }
050    
051            } catch (SQLException e) {
052                LOG.warn("JDBC error occurred while trying to detect database type.  Will use default JDBC implementation: "
053                                + e.getMessage());
054                log("Failure details: ", e);
055            }
056    
057            // Use the default JDBC adapter if the
058            // Database type is not recognized.
059            if (adapter == null) {
060                adapter = new DefaultJDBCAdapter();
061            }
062            
063            return adapter;
064        }
065        
066        public static void log(String msg, SQLException e) {
067            if (LOG.isDebugEnabled()) {
068                String s = msg + e.getMessage();
069                while (e.getNextException() != null) {
070                    e = e.getNextException();
071                    s += ", due to: " + e.getMessage();
072                }
073                LOG.debug(s, e);
074            }
075        }
076    }