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 Copyright (c) 2007, 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.jdbc2.optional;

import java.sql.SQLException;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.sql.StatementEvent;
import javax.sql.StatementEventListener;

 * This class is used to wrap and return a physical connection within a logical
 * handle. It also registers and notifies ConnectionEventListeners of any
 * ConnectionEvents
 * @see javax.sql.PooledConnection
 * @see org.gjt.mm.mysql.jdbc2.optional.LogicalHandle
 * @author Todd Wolff <todd.wolff_at_prodigy.net>
00046 public class JDBC4MysqlPooledConnection extends MysqlPooledConnection {

      private Map<StatementEventListener, StatementEventListener> statementEventListeners;

      public JDBC4MysqlPooledConnection(com.mysql.jdbc.Connection connection) {
            this.statementEventListeners = new HashMap<StatementEventListener, StatementEventListener>();
00056       public synchronized void close() throws SQLException {
            if (this.statementEventListeners != null) {
                  this.statementEventListeners = null;
       * Registers a <code>StatementEventListener</code> with this <code>PooledConnection</code> object.  Components that 
       * wish to be notified when  <code>PreparedStatement</code>s created by the
     * connection are closed or are detected to be invalid may use this method 
     * to register a <code>StatementEventListener</code> with this <code>PooledConnection</code> object.
       * <p>
       * @param listener      an component which implements the <code>StatementEventListener</code> 
       *                            interface that is to be registered with this <code>PooledConnection</code> object
       * <p>
       * @since 1.6
00078       public void addStatementEventListener(StatementEventListener listener) {
            synchronized (this.statementEventListeners) {
                  this.statementEventListeners.put(listener, listener);
       * Removes the specified <code>StatementEventListener</code> from the list of 
       * components that will be notified when the driver detects that a 
       * <code>PreparedStatement</code> has been closed or is invalid.
       * <p> 
       * @param listener      the component which implements the
       *                            <code>StatementEventListener</code> interface that was previously 
       *                            registered with this <code>PooledConnection</code> object
       * <p>
       * @since 1.6
00095       public void removeStatementEventListener(StatementEventListener listener) {
            synchronized (this.statementEventListeners) {
      void fireStatementEvent(StatementEvent event) throws SQLException {
            synchronized (this.statementEventListeners) {
                  for (StatementEventListener listener : this.statementEventListeners.keySet()) {

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