package com.atlassian.activeobjects.internal;
   
   import net.java.ao.ActiveObjectsException;
   
   import javax.sql.DataSource;
   import java.sql.Connection;
   import java.sql.SQLException;
   
   public final class DriverNameExtractorImpl implements DriverNameExtractor {
      public String getDriverName(final DataSource dataSource) {
          Connection connection = null;
          try {
              connection = dataSource.getConnection();
              return connection.getMetaData().getDriverName();
          } catch (SQLException e) {
              throw new ActiveObjectsException(e);
          } finally {
              closeQuietly(connection);
          }
      }
  
      private static void closeQuietly(Connection connection) {
          try {
              if (connection != null) {
                  connection.close();
              }
          } catch (SQLException e) {
              throw new RuntimeException(e);
          }
      }
  }