001/* Attribute.java -- 002 Copyright (C) 2006 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038package javax.management; 039 040import 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 */ 050public 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}