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package sun.jvmstat.perfdata.monitor;

import sun.jvmstat.monitor.*;
import sun.management.counter.Variability;
import java.nio.ByteBuffer;

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.
Author:
Brian Doherty
Since:
1.5/**
 * 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.
 *
 * @author Brian Doherty
 * @since 1.5
 */
public class PerfStringConstantMonitor extends PerfStringMonitor {

    
The cached value of the string instrument.
/**
     * The cached value of the string instrument.
     */
    String data;

    
Constructor to create a StringMonitor object for the constant string
instrument object represented by the data in the given buffer.
Params:
name – the name of the instrumentation object
supported – support level indicator
bb – the buffer containing the string instrument data/**
     * Constructor to create a StringMonitor object for the constant string
     * instrument object represented by the data in the given buffer.
     *
     * @param name the name of the instrumentation object
     * @param supported support level indicator
     * @param bb the buffer containing the string instrument data
     */
    public PerfStringConstantMonitor(String name, boolean supported,
                                     ByteBuffer bb) {
        super(name, Variability.CONSTANT, supported, bb);
        this.data = super.stringValue();
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Object getValue() {
        return data;        // return the cached string
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public String stringValue() {
        return data;        // return the cached string
    }
}