1 | /* |
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2 | Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
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3 | |
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4 | |
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5 | The MySQL Connector/J is licensed under the terms of the GPLv2 |
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6 | <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors. |
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7 | There are special exceptions to the terms and conditions of the GPLv2 as it is applied to |
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8 | this software, see the FLOSS License Exception |
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9 | <http://www.mysql.com/about/legal/licensing/foss-exception.html>. |
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10 | |
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11 | This program is free software; you can redistribute it and/or modify it under the terms |
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12 | of the GNU General Public License as published by the Free Software Foundation; version 2 |
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13 | of the License. |
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14 | |
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15 | This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
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16 | without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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17 | See the GNU General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU General Public License along with this |
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20 | program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth |
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21 | Floor, Boston, MA 02110-1301 USA |
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22 | |
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23 | */ |
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24 | |
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25 | package com.mysql.jdbc.jdbc2.optional; |
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26 | |
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27 | import java.sql.SQLException; |
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28 | |
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29 | import java.util.HashMap; |
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30 | import java.util.Iterator; |
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31 | import java.util.Map; |
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32 | |
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33 | import javax.sql.StatementEvent; |
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34 | import javax.sql.StatementEventListener; |
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35 | |
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36 | |
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37 | /** |
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38 | * This class is used to wrap and return a physical connection within a logical |
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39 | * handle. It also registers and notifies ConnectionEventListeners of any |
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40 | * ConnectionEvents |
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41 | * |
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42 | * @see javax.sql.PooledConnection |
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43 | * @see org.gjt.mm.mysql.jdbc2.optional.LogicalHandle |
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44 | * @author Todd Wolff <todd.wolff_at_prodigy.net> |
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45 | */ |
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46 | public class JDBC4MysqlPooledConnection extends MysqlPooledConnection { |
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47 | |
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48 | private Map<StatementEventListener, StatementEventListener> statementEventListeners; |
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49 | |
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50 | public JDBC4MysqlPooledConnection(com.mysql.jdbc.Connection connection) { |
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51 | super(connection); |
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52 | |
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53 | this.statementEventListeners = new HashMap<StatementEventListener, StatementEventListener>(); |
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54 | } |
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55 | |
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56 | public synchronized void close() throws SQLException { |
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57 | super.close(); |
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58 | |
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59 | if (this.statementEventListeners != null) { |
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60 | this.statementEventListeners.clear(); |
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61 | |
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62 | this.statementEventListeners = null; |
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63 | } |
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64 | } |
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65 | |
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66 | |
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67 | /** |
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68 | * Registers a <code>StatementEventListener</code> with this <code>PooledConnection</code> object. Components that |
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69 | * wish to be notified when <code>PreparedStatement</code>s created by the |
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70 | * connection are closed or are detected to be invalid may use this method |
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71 | * to register a <code>StatementEventListener</code> with this <code>PooledConnection</code> object. |
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72 | * <p> |
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73 | * @param listener an component which implements the <code>StatementEventListener</code> |
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74 | * interface that is to be registered with this <code>PooledConnection</code> object |
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75 | * <p> |
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76 | * @since 1.6 |
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77 | */ |
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78 | public void addStatementEventListener(StatementEventListener listener) { |
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79 | synchronized (this.statementEventListeners) { |
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80 | this.statementEventListeners.put(listener, listener); |
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81 | } |
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82 | } |
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83 | |
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84 | /** |
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85 | * Removes the specified <code>StatementEventListener</code> from the list of |
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86 | * components that will be notified when the driver detects that a |
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87 | * <code>PreparedStatement</code> has been closed or is invalid. |
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88 | * <p> |
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89 | * @param listener the component which implements the |
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90 | * <code>StatementEventListener</code> interface that was previously |
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91 | * registered with this <code>PooledConnection</code> object |
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92 | * <p> |
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93 | * @since 1.6 |
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94 | */ |
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95 | public void removeStatementEventListener(StatementEventListener listener) { |
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96 | synchronized (this.statementEventListeners) { |
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97 | this.statementEventListeners.remove(listener); |
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98 | } |
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99 | } |
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100 | |
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101 | void fireStatementEvent(StatementEvent event) throws SQLException { |
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102 | synchronized (this.statementEventListeners) { |
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103 | for (StatementEventListener listener : this.statementEventListeners.keySet()) { |
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104 | listener.statementClosed(event); |
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105 | } |
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106 | } |
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107 | } |
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108 | } |
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