javax.management
Class AttributeValueExp

java.lang.Object
  |
  +--javax.management.AttributeValueExp

public class AttributeValueExp

extends java.lang.Object

implements ValueExp

The AttributeValueExp class represents attributes used as arguments to relational constraints. An AttributeValueExp may be used anywhere a ValueExp is required.

See Also:

Serialized Form

Field Summary

(package private) boolean	classattr
(package private) ObjectName	mbeanName

Constructor Summary

	AttributeValueExp() Default Constructor.
(package private)	AttributeValueExp(AttributeValueExp v1, AttributeValueExp v2, int qtype)
	AttributeValueExp(java.lang.String attr) Creates a new AttributeValueExp representing the specified object attribute, named attr.
(package private)	AttributeValueExp(java.lang.String attr, java.lang.Object nobject)
(package private)	AttributeValueExp(java.lang.String className, java.lang.String attr)

Method Summary

ValueExp	apply(ObjectName object) Applies the AttributeValueExp on MBean.
protected java.lang.Object	getAttribute(ObjectName name) Return the value of the given attribute in the named MBean.
java.lang.String	getAttributeName() Returns a string representation of the name of the attribute.
(package private) java.lang.Object	getObject()
void	setMBeanServer(MBeanServer server) Sets the MBeanServer on which the query is to be accessed.
java.lang.String	toString() Returns the string representing its value

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

classattr

boolean classattr

mbeanName

ObjectName mbeanName

Constructor Detail

AttributeValueExp

public AttributeValueExp()

Default Constructor.

AttributeValueExp

public AttributeValueExp(java.lang.String attr)

Creates a new AttributeValueExp representing the specified object attribute, named attr.

Parameters:

attr - creates AttributeValueExp with the specified attribute

AttributeValueExp

AttributeValueExp(java.lang.String attr,
                  java.lang.Object nobject)

AttributeValueExp

AttributeValueExp(java.lang.String className,
                  java.lang.String attr)

AttributeValueExp

AttributeValueExp(AttributeValueExp v1,
                  AttributeValueExp v2,
                  int qtype)

Method Detail

apply

public ValueExp apply(ObjectName object)
               throws BadAttributeValueExpException,
                      InvalidApplicationException,
                      BadStringOperationException,
                      BadBinaryOpValueExpException

Applies the AttributeValueExp on MBean.

Specified by:

apply in interface ValueExp

Parameters:

object - The MBean objectname on which the AttributeValueExp will be applied.

Returns:

The ValueExp.

Throws:

BadAttributeValueExpException - This ExpException is thrown when an invalid MBean attribute is passed to a query constructing method.

InvalidApplicationException - This exception is thrown when an attempt is made to apply either of the following: A subquery expression to an MBean A qualified attribute expression to an MBean of the wrong class

BadStringOperationException - This exception is thrown when an invalid string operation is passed to a method for constructing a query.

BadBinaryOpValueExpException - This exception is thrown when an invalid expression is passed to a method for constructing a query.

getAttributeName

public java.lang.String getAttributeName()

Returns a string representation of the name of the attribute.

Returns:

A string representation of the name of the attribute.

setMBeanServer

public void setMBeanServer(MBeanServer server)

Sets the MBeanServer on which the query is to be accessed.

Specified by:

setMBeanServer in interface ValueExp

Parameters:

s - - The MBeanServer on which the query is to be accessed.

toString

public java.lang.String toString()

Returns the string representing its value

Overrides:

toString in class java.lang.Object

getAttribute

protected java.lang.Object getAttribute(ObjectName name)

Return the value of the given attribute in the named MBean. If the attempt to access the attribute generates an exception, return null.

Parameters:

name - the name of the MBean whose attribute is to be returned.

Returns:

the value of the attribute, or null if it could not be obtained.

getObject

java.lang.Object getObject()