sun.jvmstat.perfdata.monitor

Class PerfStringConstantMonitor

java.lang.Object

sun.jvmstat.monitor.AbstractMonitor

sun.jvmstat.perfdata.monitor.PerfByteArrayMonitor

sun.jvmstat.perfdata.monitor.PerfStringMonitor

sun.jvmstat.perfdata.monitor.PerfStringConstantMonitor

All Implemented Interfaces:

ByteArrayMonitor, Monitor, StringMonitor

public class PerfStringConstantMonitor
extends PerfStringMonitor

Class for monitoring a constant PerfData String instrument. The value associated with a constant string instrument is fixed at the string instrument's creation time. Its value and length never change.

Since:

1.5

Author:

Brian Doherty

Field Summary

Fields inherited from class sun.jvmstat.monitor.AbstractMonitor

name, supported, units, variability, vectorLength

Constructor Summary

Constructors

Constructor and Description
PerfStringConstantMonitor(String name, boolean supported, ByteBuffer bb) Constructor to create a StringMonitor object for the constant string instrument object represented by the data in the given buffer.

Method Summary

Modifier and Type	Method and Description
Object	getValue() Return an Object that encapsulates this instrumentation object's current data value.
String	stringValue() Return the current value of the StringInstrument as a String.

Methods inherited from class sun.jvmstat.perfdata.monitor.PerfByteArrayMonitor

byteArrayValue, byteAt, getMaximumLength

Methods inherited from class sun.jvmstat.monitor.AbstractMonitor

getBaseName, getName, getUnits, getVariability, getVectorLength, isSupported, isVector

Methods inherited from class java.lang.Object

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

Methods inherited from interface sun.jvmstat.monitor.Monitor

getBaseName, getName, getUnits, getVariability, getVectorLength, isSupported, isVector

Constructor Detail

PerfStringConstantMonitor

public PerfStringConstantMonitor(String name,
                                 boolean supported,
                                 ByteBuffer bb)

Constructor to create a StringMonitor object for the constant string instrument object represented by the data in the given buffer.

Parameters:

name - the name of the instrumentation object

supported - support level indicator

bb - the buffer containing the string instrument data

Method Detail

getValue

public Object getValue()

Return an Object that encapsulates this instrumentation object's current data value. The object returned contains a byte[] with a copy of the current elements of the ByteArrayInstrument. The object returned contains a String with a copy of the current value of the StringInstrument.

Specified by:

getValue in interface Monitor

Overrides:

getValue in class PerfStringMonitor

Returns:

Object - a copy of the current value of the StringInstrument. The return value is guaranteed to be of type String.

stringValue

public String stringValue()

Return the current value of the StringInstrument as a String.

Specified by:

stringValue in interface StringMonitor

Overrides:

stringValue in class PerfStringMonitor

Returns:

String - a copy of the current value of the StringInstrument.