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 }