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AttributeValueExp (JBoss/JMX API) - JBoss 4.0.1 sp1 jmx API Documentation 英文版文档

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javax.management
Class AttributeValueExp

java.lang.Object
  javax.management.AttributeValueExp

All Implemented Interfaces:

Serializable, ValueExp

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public class AttributeValueExp

extends Object

implements ValueExp

A String that is an arguement to a query.

Revisions:

20020317 Adrian Brock:

• Make queries thread safe

20020711 Adrian Brock:

• Serialization

Version:

$Revision: 1.9 $

Author:

Adrian Brock.

See Also:

Serialized Form

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Constructor Summary

AttributeValueExp()           Construct an attribute value expression for the null attribute name

AttributeValueExp(String attr)           Construct an attribute value expression for the passed attribute name

 

Method Summary
ValueExp	apply(ObjectName name)           Apply this value expression to an MBean.
protected  Object	getAttribute(ObjectName name)           Get the value of the attribute for a given object name
String	getAttributeName()           Get the attribute name.
void	setMBeanServer(MBeanServer server)           Set the MBeanServer for this expression.
String	toString()

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

AttributeValueExp

public AttributeValueExp()

Construct an attribute value expression for the null attribute name

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AttributeValueExp

public AttributeValueExp(String attr)

Construct an attribute value expression for the passed attribute name

Parameters:

attr - the attribute name

Method Detail

getAttributeName

public String getAttributeName()

Get the attribute name.

Returns:

the attribute name

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apply

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

Description copied from interface: ValueExp

Apply this value expression to an MBean.

Specified by:

apply in interface ValueExp

Parameters:

name - the object name of the mbean

Returns:

this value expression

Throws:

BadBinaryOpValueExpException - when an invalid binary operation is used during query construction

InvalidApplicationException - when trying to apply a subquery expression to an MBean or an attribute expression to an MBean of the wrong class.

BadStringOperationException - when an invalid string operation is used during query construction

BadAttributeValueExpException - when an invalid MBean attribute is used during query construction

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setMBeanServer

public void setMBeanServer(MBeanServer server)

Description copied from interface: ValueExp

Set the MBeanServer for this expression. Only MBeans registered in this server can be used in queries.

Specified by:

setMBeanServer in interface ValueExp

Parameters:

server - the MBeanServer

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toString

public String toString()

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getAttribute

protected Object getAttribute(ObjectName name)

Get the value of the attribute for a given object name

Parameters:

name - - the object name

Returns:

the value of the attribute

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