1 /*
 2  * Copyright (c) 1999, 2020, 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.management;
27 
28 import java.io.IOException;
29 import java.io.ObjectInputStream;
30 
31 
32 /**
33  * Thrown when an invalid MBean attribute is passed to a query
34  * constructing method.  This exception is used internally by JMX
35  * during the evaluation of a query.  User code does not usually
36  * see it.
37  *
38  * @since 1.5
39  */
40 public class BadAttributeValueExpException extends Exception   {
41 
42 
43     /* Serial version */
44     private static final long serialVersionUID = -3105272988410493376L;
45 
46     /**
47      * @serial A string representation of the attribute that originated this exception.
48      * for example, the string value can be the return of {@code attribute.toString()}
49      */
50     @SuppressWarnings("serial") // See handling in constructor and readObject
51     private String val;
52 
53     /**
54      * Constructs a BadAttributeValueExpException using the specified Object to
55      * create the toString() value.
56      *
57      * @param val the inappropriate value.
58      */
59     public BadAttributeValueExpException (Object val) {
60         this.val = val == null ? null : val.toString();
61     }
62 
63 
64     /**
65      * Returns the string representing the object.
66      */
67     public String toString()  {
68         return "BadAttributeValueException: " + val;
69     }
70 
71     private void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
72         ObjectInputStream.GetField gf = ois.readFields();
73         Object valObj = gf.get("val", null);
74 
75         if (valObj instanceof String || valObj == null) {
76             val = (String)valObj;
77         } else { // the serialized object is from a version without JDK-8019292 fix
78             val = System.identityHashCode(valObj) + "@" + valObj.getClass().getName();
79         }
80     }
81  }