org.mc4j.ems.impl.jmx.connection.bean.attribute
Class DAttribute

java.lang.Object
  org.mc4j.ems.impl.jmx.connection.bean.attribute.DAttribute

Direct Known Subclasses:

DUnkownAttribute

public class DAttribute
extends java.lang.Object

Version:

$Revision: 592 $($Author: ghinkl $ / $Date: 2008-09-16 12:32:53 -0400 (Tue, 16 Sep 2008) $)

Author:

Greg Hinkle (ghinkle@users.sourceforge.net), Apr 4, 2005

Field Summary

protected DMBean	bean
protected java.util.Set<AttributeChangeListener>	changeListeners
protected java.lang.Object	currentValue
protected java.util.LinkedList<java.lang.Throwable>	failures
protected javax.management.MBeanAttributeInfo	info
protected long	lastRetrieved
protected boolean	loaded
protected boolean	supportedType
protected ValueHistory	valueHistory

Constructor Summary

DAttribute(javax.management.MBeanAttributeInfo info, DMBean bean)

Method Summary

void	alterValue(java.lang.Object newValue) Alters the internally stored value of this attribute.
int	compareTo(java.lang.Object o)
java.lang.String	getDescription()
java.util.List<java.lang.Throwable>	getFailures() TODO GH: Should this be a list of failure objects that has more info or perhaps a custom exception with the info? (timestamp, bean name, attribute name) TODO GH: Should this be all failures, retrieval failures, what about set failures? TODO GH: Should this be genericised for the server proxy objects?
java.lang.String	getName()
java.lang.String	getType()
java.lang.Class	getTypeClass()
java.lang.Object	getValue()
org.mc4j.ems.store.ValueHistory	getValueHistory()
int	getValueSize()
protected void	init() Initializes internal storage settings for the value history
boolean	isNumericType()
boolean	isReadable()
boolean	isSupportedType()
boolean	isWritable()
java.lang.Object	refresh() Updates the local value of this mbean from the server TODO we should not update to null on failure, but retain the last known
void	registerAttributeChangeListener(AttributeChangeListener listener)
protected void	registerFailure(java.lang.Throwable t)
void	setSupportedType(boolean supportedType)
void	setValue(java.lang.Object newValue) Set the attribute on the server
protected boolean	storeHistory(java.lang.Object value)

Methods inherited from class java.lang.Object

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

Field Detail

info

protected javax.management.MBeanAttributeInfo info

bean

protected DMBean bean

loaded

protected boolean loaded

supportedType

protected boolean supportedType

changeListeners

protected java.util.Set<AttributeChangeListener> changeListeners

lastRetrieved

protected long lastRetrieved

currentValue

protected java.lang.Object currentValue

valueHistory

protected ValueHistory valueHistory

failures

protected java.util.LinkedList<java.lang.Throwable> failures

Constructor Detail

DAttribute

public DAttribute(javax.management.MBeanAttributeInfo info,
                  DMBean bean)

Method Detail

init

protected void init()

Initializes internal storage settings for the value history

registerAttributeChangeListener

public void registerAttributeChangeListener(AttributeChangeListener listener)

getValue

public java.lang.Object getValue()

getValueSize

public int getValueSize()

setValue

public void setValue(java.lang.Object newValue)
              throws java.lang.Exception

Set the attribute on the server

Parameters:

newValue - The value to be set

Throws:

java.lang.Exception

alterValue

public void alterValue(java.lang.Object newValue)

Alters the internally stored value of this attribute. Does not update the server value. Is intended for mass load of attribute data via the MBean.

Parameters:

newValue -

storeHistory

protected boolean storeHistory(java.lang.Object value)

refresh

public java.lang.Object refresh()

Updates the local value of this mbean from the server

TODO we should not update to null on failure, but retain the last known

getFailures

public java.util.List<java.lang.Throwable> getFailures()

TODO GH: Should this be a list of failure objects that has more info or perhaps a custom exception with the info? (timestamp, bean name, attribute name) TODO GH: Should this be all failures, retrieval failures, what about set failures? TODO GH: Should this be genericised for the server proxy objects?

Returns:

failures of interaction with server related to this attribute

registerFailure

protected void registerFailure(java.lang.Throwable t)

getValueHistory

public org.mc4j.ems.store.ValueHistory getValueHistory()

getName

public java.lang.String getName()

getType

public java.lang.String getType()

getTypeClass

public java.lang.Class getTypeClass()

isNumericType

public boolean isNumericType()

getDescription

public java.lang.String getDescription()

isWritable

public boolean isWritable()

isReadable

public boolean isReadable()

isSupportedType

public boolean isSupportedType()

setSupportedType

public void setSupportedType(boolean supportedType)

compareTo

public int compareTo(java.lang.Object o)