001 /* Attribute.java -- 002 Copyright (C) 2006 Free Software Foundation, Inc. 003 004 This file is part of GNU Classpath. 005 006 GNU Classpath is free software; you can redistribute it and/or modify 007 it under the terms of the GNU General Public License as published by 008 the Free Software Foundation; either version 2, or (at your option) 009 any later version. 010 011 GNU Classpath is distributed in the hope that it will be useful, but 012 WITHOUT ANY WARRANTY; without even the implied warranty of 013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 General Public License for more details. 015 016 You should have received a copy of the GNU General Public License 017 along with GNU Classpath; see the file COPYING. If not, write to the 018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 019 02110-1301 USA. 020 021 Linking this library statically or dynamically with other modules is 022 making a combined work based on this library. Thus, the terms and 023 conditions of the GNU General Public License cover the whole 024 combination. 025 026 As a special exception, the copyright holders of this library give you 027 permission to link this library with independent modules to produce an 028 executable, regardless of the license terms of these independent 029 modules, and to copy and distribute the resulting executable under 030 terms of your choice, provided that you also meet, for each linked 031 independent module, the terms and conditions of the license of that 032 module. An independent module is a module which is not derived from 033 or based on this library. If you modify this library, you may extend 034 this exception to your version of the library, but you are not 035 obligated to do so. If you do not wish to do so, delete this 036 exception statement from your version. */ 037 038 package javax.management; 039 040 import java.io.Serializable; 041 042 /** 043 * Represents an MBean attribute, having the name and the assigned value. The 044 * MBean objects use this class to get and set attributes values. 045 * 046 * @since 1.5 047 * 048 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 049 */ 050 public class Attribute 051 implements Serializable 052 { 053 /** 054 * Compatible with JDK 1.5 055 */ 056 private static final long serialVersionUID = 2484220110589082382L; 057 058 /** 059 * The attribute name. 060 */ 061 final String m_name; 062 063 /** 064 * The attribute value. 065 */ 066 final Object m_value; 067 068 /** 069 * Create the attribute with the given name and value. 070 * 071 * @param name the attribute name 072 * @param value the attribute value 073 */ 074 public Attribute(String name, Object value) 075 { 076 m_name = name; 077 m_value = value; 078 } 079 080 /** 081 * Compares the attribute with another attribute. 082 * 083 * @param other the other object to compare with 084 * 085 * @return true if both value and object are equal, false otherwise. 086 */ 087 public boolean equals(Object other) 088 { 089 if (other instanceof Attribute) 090 { 091 Attribute oa = (Attribute) other; 092 boolean n, v; 093 if (oa.m_name == null || m_name == null) 094 n = oa.m_name == m_name; 095 else 096 n = oa.m_name.equals(m_name); 097 098 if (oa.m_value == null || m_value == null) 099 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 */ 115 public String getName() 116 { 117 return m_name; 118 } 119 120 /** 121 * Returns the attribute value. 122 * 123 * @return the attribute value. 124 */ 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 */ 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 }