/*
 * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package javax.sql;

import java.sql.SQLException;

/**
 * <P>An <code>Event</code> object that provides information about the
 * source of a connection-related event. <code>ConnectionEvent</code>
 * objects are generated when an application closes a pooled connection
 * and when an error occurs. The <code>ConnectionEvent</code> object
 * contains two kinds of information:
 * <UL>
 * <LI>The pooled connection closed by the application
 * <LI>In the case of an error event, the <code>SQLException</code>
 * about to be thrown to the application
 * </UL>
 *
 * @since 1.4
 */

public class ConnectionEvent extends java.util.EventObject {

 /**
 * <P>Constructs a <code>ConnectionEvent</code> object initialized with
 * the given <code>PooledConnection</code> object. <code>SQLException</code>
 * defaults to <code>null</code>.
 *
 * @param con the pooled connection that is the source of the event
 * @throws IllegalArgumentException if <code>con</code> is null.
 */
 public ConnectionEvent(PooledConnection con) {
 super(con);
 }

 /**
 * <P>Constructs a <code>ConnectionEvent</code> object initialized with
 * the given <code>PooledConnection</code> object and
 * <code>SQLException</code> object.
 *
 * @param con the pooled connection that is the source of the event
 * @param ex the SQLException about to be thrown to the application
 * @throws IllegalArgumentException if <code>con</code> is null.
 */
 public ConnectionEvent(PooledConnection con, SQLException ex) {
 super(con);
 this.ex = ex;
 }

 /**
 * <P>Retrieves the <code>SQLException</code> for this
 * <code>ConnectionEvent</code> object. May be <code>null</code>.
 *
 * @return the SQLException about to be thrown or <code>null</code>
 */
 public SQLException getSQLException() { return ex; }

 /**
 * The <code>SQLException</code> that the driver will throw to the
 * application when an error occurs and the pooled connection is no
 * longer usable.
 * @serial
 */
 private SQLException ex = null;

 /**
 * Private serial version unique ID to ensure serialization
 * compatibility.
 */
 static final long serialVersionUID = -4843217645290030002L;

 }