/*
Copyright (c) 2002, 2012, 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
<http://www.mysql.com/about/legal/licensing/foss-exception.html>.
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
*/
public class ProfilerEventHandlerFactory {
private static final Map<MySQLConnection, ProfilerEventHandler> CONNECTIONS_TO_SINKS = new HashMap<MySQLConnection, ProfilerEventHandler>();
private Connection ownerConnection = null;
protected 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
*/
public static synchronized ProfilerEventHandler getInstance(MySQLConnection conn) throws SQLException {
ProfilerEventHandler handler = CONNECTIONS_TO_SINKS
.get(conn);
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
conn.initializeExtension(handler);
CONNECTIONS_TO_SINKS.put(conn, handler);
}
return handler;
}
public static synchronized void removeInstance(Connection conn) {
ProfilerEventHandler handler = CONNECTIONS_TO_SINKS.remove(conn);
if (handler != null) {
handler.destroy();
}
}
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");
}
}
}