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      1 /*
      2  * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved.
      3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
      4  *
      5  * This code is free software; you can redistribute it and/or modify it
      6  * under the terms of the GNU General Public License version 2 only, as
      7  * published by the Free Software Foundation.  Oracle designates this
      8  * particular file as subject to the "Classpath" exception as provided
      9  * by Oracle in the LICENSE file that accompanied this code.
     10  *
     11  * This code is distributed in the hope that it will be useful, but WITHOUT
     12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     14  * version 2 for more details (a copy is included in the LICENSE file that
     15  * accompanied this code).
     16  *
     17  * You should have received a copy of the GNU General Public License version
     18  * 2 along with this work; if not, write to the Free Software Foundation,
     19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
     20  *
     21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
     22  * or visit www.oracle.com if you need additional information or have any
     23  * questions.
     24  */
     25 
     26 package javax.sql;
     27 
     28 import java.sql.SQLException;
     29 
     30 /**
     31  * <P>An <code>Event</code> object that provides information about the
     32  * source of a connection-related event.  <code>ConnectionEvent</code>
     33  * objects are generated when an application closes a pooled connection
     34  * and when an error occurs.  The <code>ConnectionEvent</code> object
     35  * contains two kinds of information:
     36  * <UL>
     37  *   <LI>The pooled connection closed by the application
     38  *   <LI>In the case of an error event, the <code>SQLException</code>
     39  *       about to be thrown to the application
     40  * </UL>
     41  *
     42  * @since 1.4
     43  */
     44 
     45 public class ConnectionEvent extends java.util.EventObject {
     46 
     47   /**
     48    * <P>Constructs a <code>ConnectionEvent</code> object initialized with
     49    * the given <code>PooledConnection</code> object. <code>SQLException</code>
     50    * defaults to <code>null</code>.
     51    *
     52    * @param con the pooled connection that is the source of the event
     53    * @throws IllegalArgumentException if <code>con</code> is null.
     54    */
     55   public ConnectionEvent(PooledConnection con) {
     56     super(con);
     57   }
     58 
     59   /**
     60    * <P>Constructs a <code>ConnectionEvent</code> object initialized with
     61    * the given <code>PooledConnection</code> object and
     62    * <code>SQLException</code> object.
     63    *
     64    * @param con the pooled connection that is the source of the event
     65    * @param ex the SQLException about to be thrown to the application
     66    * @throws IllegalArgumentException if <code>con</code> is null.
     67    */
     68   public ConnectionEvent(PooledConnection con, SQLException ex) {
     69     super(con);
     70     this.ex = ex;
     71   }
     72 
     73   /**
     74    * <P>Retrieves the <code>SQLException</code> for this
     75    * <code>ConnectionEvent</code> object. May be <code>null</code>.
     76    *
     77    * @return the SQLException about to be thrown or <code>null</code>
     78    */
     79   public SQLException getSQLException() { return ex; }
     80 
     81   /**
     82    * The <code>SQLException</code> that the driver will throw to the
     83    * application when an error occurs and the pooled connection is no
     84    * longer usable.
     85    * @serial
     86    */
     87   private SQLException ex = null;
     88 
     89   /**
     90    * Private serial version unique ID to ensure serialization
     91    * compatibility.
     92    */
     93   static final long serialVersionUID = -4843217645290030002L;
     94 
     95  }
     96