de.intarsys.tools.monitor
Class NullMonitor

java.lang.Object
  de.intarsys.tools.monitor.NullMonitor

All Implemented Interfaces:

IMonitor

public class NullMonitor
extends Object
implements IMonitor

A monitor doing nothing...

Constructor Summary

NullMonitor(String name)
Create a NullMonitor

Method Summary

ITrace	attach() Attach this IMonitor to the current Thread.
void	detach() Detach this IMonitor from the current Thread.
int	getActive()
int	getCollectAll()
int	getConcurrent()
ITrace	getCurrentTrace() Return an ITrace that is currently under construction.
Map	getData() A map containing key/value pairs representing all statistical informations derived from the samples.
long	getDifference()
Map	getFormattedData() A map containing key/value pairs with string representations for the statistical information from getData.
String	getFormattedStart()
String	getFormattedStop()
Logger	getLogger() The associated Logger instance.
String	getName() The name of this monitor.
ISample	getSample(String description)
List	getSamples()
long	getStart()
long	getStop()
Map	getTags()
List	getTraces() A list of ITrace instances.
boolean	isActive()
void	reset() Reset all information in this monitor.
ISample	sample(String description)
void	setCollectAll(int count)
void	setCollectExtremes(int count)
void	tag(String key, Object tag)

Methods inherited from class java.lang.Object

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

Constructor Detail

NullMonitor

public NullMonitor(String name)

Create a NullMonitor

Parameters:

name - monitor name

Method Detail

attach

public ITrace attach()

Description copied from interface: IMonitor

Attach this IMonitor to the current Thread.

Calling this method indicates the beginning of a measuring period represented by a ITrace. This method must always be paired with a call to "detach()".

Specified by:

attach in interface IMonitor

Returns:

The new IMonitorTrace.

detach

public void detach()

Description copied from interface: IMonitor

Detach this IMonitor from the current Thread. This call terminates the current ITrace instance.

Specified by:

detach in interface IMonitor

getActive

public int getActive()

getCollectAll

public int getCollectAll()

getConcurrent

public int getConcurrent()

getCurrentTrace

public ITrace getCurrentTrace()

Description copied from interface: IMonitor

Return an ITrace that is currently under construction.

Specified by:

getCurrentTrace in interface IMonitor

Returns:

The ITrace that is currently under construction.

getData

public Map getData()

Description copied from interface: IMonitor

A map containing key/value pairs representing all statistical informations derived from the samples.

Specified by:

getData in interface IMonitor

Returns:

A map containing key/value pairs representing all statistical informations derived from the samples.

getDifference

public long getDifference()

getFormattedData

public Map getFormattedData()

Description copied from interface: IMonitor

A map containing key/value pairs with string representations for the statistical information from getData.

Specified by:

getFormattedData in interface IMonitor

Returns:

A map containing key/value pairs with string representations for the statistical information from getData.

getFormattedStart

public String getFormattedStart()

getFormattedStop

public String getFormattedStop()

getLogger

public Logger getLogger()

Description copied from interface: IMonitor

The associated Logger instance.

Specified by:

getLogger in interface IMonitor

Returns:

The associated Logger instance.

getName

public String getName()

Description copied from interface: IMonitor

The name of this monitor.

Specified by:

getName in interface IMonitor

Returns:

The name of this monitor.

getSample

public ISample getSample(String description)

getSamples

public List getSamples()

getStart

public long getStart()

getStop

public long getStop()

getTags

public Map getTags()

getTraces

public List getTraces()

Description copied from interface: IMonitor

A list of ITrace instances.

This may be null if no traces are stored (see setCollectAll()).

Specified by:

getTraces in interface IMonitor

Returns:

A list of ITrace instances.

isActive

public boolean isActive()

reset

public void reset()

Description copied from interface: IMonitor

Reset all information in this monitor.

Specified by:

reset in interface IMonitor

sample

public ISample sample(String description)

setCollectAll

public void setCollectAll(int count)

setCollectExtremes

public void setCollectExtremes(int count)

tag

public void tag(String key,
                Object tag)