/*
 * Copyright (c) 1999, 2005, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
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 *
 *
 *
 *
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 */

package javax.management;


// java import
import java.io.Serializable;


/**
 * Represents an MBean attribute by associating its name with its value.
 * The MBean server and other objects use this class to get and set attributes values.
 *
 * @since 1.5
 */
public class Attribute implements Serializable {

 /* Serial version */
 private static final long serialVersionUID = 2484220110589082382L;

 /**
 * @serial Attribute name.
 */
 private String name;

 /**
 * @serial Attribute value
 */
 private Object value= null;


 /**
 * Constructs an Attribute object which associates the given attribute name with the given value.
 *
 * @param name A String containing the name of the attribute to be created. Cannot be null.
 * @param value The Object which is assigned to the attribute. This object must be of the same type as the attribute.
 *
 */
 public Attribute(String name, Object value) {

 if (name == null) {
 throw new RuntimeOperationsException(new IllegalArgumentException("Attribute name cannot be null "));
 }

 this.name = name;
 this.value = value;
 }


 /**
 * Returns a String containing the name of the attribute.
 *
 * @return the name of the attribute.
 */
 public String getName() {
 return name;
 }

 /**
 * Returns an Object that is the value of this attribute.
 *
 * @return the value of the attribute.
 */
 public Object getValue() {
 return value;
 }

 /**
 * Compares the current Attribute Object with another Attribute Object.
 *
 * @param object The Attribute that the current Attribute is to be compared with.
 *
 * @return True if the two Attribute objects are equal, otherwise false.
 */


 public boolean equals(Object object) {
 if (!(object instanceof Attribute)) {
 return false;
 }
 Attribute val = (Attribute) object;

 if (value == null) {
 if (val.getValue() == null) {
 return name.equals(val.getName());
 } else {
 return false;
 }
 }

 return ((name.equals(val.getName())) &&
 (value.equals(val.getValue())));
 }

 /**
 * Returns a hash code value for this attribute.
 *
 * @return a hash code value for this attribute.
 */
 public int hashCode() {
 return name.hashCode() ^ (value == null ? 0 : value.hashCode());
 }

 /**
 * Returns a String object representing this Attribute's value. The format of this
 * string is not specified, but users can expect that two Attributes return the
 * same string if and only if they are equal.
 */
 public String toString() {
 return getName() + " = " + getValue();
 }
 }