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 Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.

  The MySQL Connector/J is licensed under the terms of the GPLv2
  <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FLOSS License Exception

  This program is free software; you can redistribute it and/or modify it under the terms
  of the GNU General Public License as published by the Free Software Foundation; version 2
  of the License.

  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU General Public License for more details.

  You should have received a copy of the GNU General Public License along with this
  program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
  Floor, Boston, MA 02110-1301  USA


package com.mysql.jdbc;

import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;

import com.mysql.jdbc.log.Log;
import com.mysql.jdbc.profiler.ProfilerEventHandler;

 * @author mmatthew
00037 public class ProfilerEventHandlerFactory {

      private static final Map CONNECTIONS_TO_SINKS = new HashMap();

      private Connection ownerConnection = null;

      private Log log = null;

       * Returns the ProfilerEventHandlerFactory that handles profiler events for the given
       * connection.
       * @param conn
       *            the connection to handle events for
       * @return the ProfilerEventHandlerFactory that handles profiler events
00053       public static synchronized ProfilerEventHandler getInstance(MySQLConnection conn) throws SQLException {
            ProfilerEventHandler handler = (ProfilerEventHandler) CONNECTIONS_TO_SINKS

            if (handler == null) {
                  handler = (ProfilerEventHandler)Util.getInstance(conn.getProfilerEventHandler(), new Class[0], new Object[0], conn.getExceptionInterceptor());
                  // we do it this way to not require
                  // exposing the connection properties 
                  // for all who utilize it
                  CONNECTIONS_TO_SINKS.put(conn, handler);

            return handler;

      public static synchronized void removeInstance(Connection conn) {
            ProfilerEventHandler handler = (ProfilerEventHandler) CONNECTIONS_TO_SINKS.remove(conn);
            if (handler != null) {

      private ProfilerEventHandlerFactory(Connection conn) {
            this.ownerConnection = conn;

            try {
                  this.log = this.ownerConnection.getLog();
            } catch (SQLException sqlEx) {
                  throw new RuntimeException("Unable to get logger from connection");

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