de.is24.util.monitoring.jmx

Class NoJmxReportable

java.lang.Object

de.is24.util.monitoring.jmx.NoJmxReportable

All Implemented Interfaces:

JmxReportable

final class NoJmxReportable
extends Object
implements JmxReportable

Null-object pattern implementation of JmxReportable. Returns an empty attributes specification and therefore only null values.

Author:

Stefan Schubert, IT-E, IS24

Field Summary

Fields

Modifier and Type	Field and Description
private static NoJmxReportable	INSTANCE
private static MBeanAttributeInfo[]	NONE

Constructor Summary

Constructors

Modifier	Constructor and Description
private	NoJmxReportable() Singleton, therefore no constructor.

Method Summary

Methods

Modifier and Type	Method and Description
Object	getAttribute(String attributeName)
MBeanAttributeInfo[]	getAttributes()
static NoJmxReportable	getInstance()

Methods inherited from class java.lang.Object

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

Field Detail

NONE

private static final MBeanAttributeInfo[] NONE

INSTANCE

private static final NoJmxReportable INSTANCE

Constructor Detail

NoJmxReportable

private NoJmxReportable()

Singleton, therefore no constructor.

Method Detail

getInstance

public static NoJmxReportable getInstance()

getAttributes

public MBeanAttributeInfo[] getAttributes()

Specified by:

getAttributes in interface JmxReportable

Returns:

a list of MBeanAttributeInfo, that is the specification of available attributes for monitoring.

getAttribute

public Object getAttribute(String attributeName)

Specified by:

getAttribute in interface JmxReportable

Parameters:

attributeName - the name of the attribute to be monitored.

Returns:

the current value of the requested attribute.