/*
* Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.sql;
/**
* <P>
* An object that registers to be notified of events generated by a
* <code>PooledConnection</code> object.
* <P>
* The <code>ConnectionEventListener</code> interface is implemented by a
* connection pooling component. A connection pooling component will
* usually be provided by a JDBC driver vendor or another system software
* vendor. A JDBC driver notifies a <code>ConnectionEventListener</code>
* object when an application is finished using a pooled connection with
* which the listener has registered. The notification
* occurs after the application calls the method <code>close</code> on
* its representation of a <code>PooledConnection</code> object. A
* <code>ConnectionEventListener</code> is also notified when a
* connection error occurs due to the fact that the <code>PooledConnection</code>
* is unfit for future use---the server has crashed, for example.
* The listener is notified by the JDBC driver just before the driver throws an
* <code>SQLException</code> to the application using the
* <code>PooledConnection</code> object.
*
* @since 1.4
*/
public interface ConnectionEventListener extends java.util.EventListener {
/**
* Notifies this <code>ConnectionEventListener</code> that
* the application has called the method <code>close</code> on its
* representation of a pooled connection.
*
* @param event an event object describing the source of
* the event
*/
void connectionClosed(ConnectionEvent event);
/**
* Notifies this <code>ConnectionEventListener</code> that
* a fatal error has occurred and the pooled connection can
* no longer be used. The driver makes this notification just
* before it throws the application the <code>SQLException</code>
* contained in the given <code>ConnectionEvent</code> object.
*
* @param event an event object describing the source of
* the event and containing the <code>SQLException</code> that the
* driver is about to throw
*/
void connectionErrorOccurred(ConnectionEvent event);
}