1 /* Attribute.java -- 2 Copyright (C) 2006 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 package javax.management; 39 40 import java.io.Serializable; 41 42 /** 43 * Represents an MBean attribute, having the name and the assigned value. The 44 * MBean objects use this class to get and set attributes values. 45 * 46 * @since 1.5 47 * 48 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 49 */ 50 public class Attribute 51 implements Serializable 52 { 53 /** 54 * Compatible with JDK 1.5 55 */ 56 private static final long serialVersionUID = 2484220110589082382L; 57 58 /** 59 * The attribute name. 60 */ 61 final String m_name; 62 63 /** 64 * The attribute value. 65 */ 66 final Object m_value; 67 68 /** 69 * Create the attribute with the given name and value. 70 * 71 * @param name the attribute name 72 * @param value the attribute value 73 */ Attribute(String name, Object value)74 public Attribute(String name, Object value) 75 { 76 m_name = name; 77 m_value = value; 78 } 79 80 /** 81 * Compares the attribute with another attribute. 82 * 83 * @param other the other object to compare with 84 * 85 * @return true if both value and object are equal, false otherwise. 86 */ equals(Object other)87 public boolean equals(Object other) 88 { 89 if (other instanceof Attribute) 90 { 91 Attribute oa = (Attribute) other; 92 boolean n, v; 93 if (oa.m_name == null || m_name == null) 94 n = oa.m_name == m_name; 95 else 96 n = oa.m_name.equals(m_name); 97 98 if (oa.m_value == null || m_value == null) 99 v = oa.m_value == m_value; 100 else 101 v = oa.m_value.equals(m_value); 102 103 return n && v; 104 105 } 106 else 107 return false; 108 } 109 110 /** 111 * Returns the attribute name. 112 * 113 * @return the attribute name 114 */ getName()115 public String getName() 116 { 117 return m_name; 118 } 119 120 /** 121 * Returns the attribute value. 122 * 123 * @return the attribute value. 124 */ getValue()125 public Object getValue() 126 { 127 return m_value; 128 } 129 130 /** 131 * Need to override as {@link #equals} is overridden. 132 * 133 * @return the expression, dependent of the object and name hashcodes. 134 */ hashCode()135 public int hashCode() 136 { 137 int n = m_name == null ? 0 : m_name.hashCode(); 138 int v = m_value == null ? 0 : m_value.hashCode(); 139 140 return n ^ v; 141 } 142 143 } 144