java.net: public class: Listener

java.net
public class: Listener [javadoc | source]

java.lang.Object
   java.net.Listener

This class represents the two separate half parts of the measurement process upon which is based the statistical model used to drive the compression layer. It exists a listener for every received packet waiting for its ack to come. When the listener is created it carries information about the interpolator it should update and the measured parameters like the choosed working level, the compression time and dimension and the uncompressed dimension. Finally, when the ack arrives, the listener is awakened and the transmission time is measured. Now the model is complete and the interpolator can be updated.

Also see:

run the main loop of the Connector

java.net.Connector the main loop owner

java.net.Interpolator the statistical engine interface

author:

 -  href="mailto:morgiaclaudio@yahoo.it">Claudio Morgia

version: 1.0 -










    







    
Field Summary
protected   Interpolator  interpolator    The interpolator to update. 
protected   int  level     
protected   int  uncompr_len     
protected   int  compr_len     
protected   long  compress_time     
protected   long  send_start     











    
Constructor:
 public Listener(Interpolator interpolator,
    int level,
    long compress_time,
    int uncompr_len,
    int compr_len) {
	send_start=System.currentTimeMillis();
	this.interpolator=interpolator;
	this.level=level;
	this.compress_time=compress_time;
	this.uncompr_len=uncompr_len;
	this.compr_len=compr_len;
}
The constructor represents the first half of the measurement and it's responsible only for storing
measured parameters. No calculation is done yet.
Parameters:
interpolator -  the interpolator to update
level -  the working level
compress_time -  the measured compress time
uncompr_len -  the uncompressed data length
compr_len -  the compressed data length










    Method from java.net.Listener Summary:

done
Methods from java.lang.Object:

clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait
Method from java.net.Listener Detail:
 public  void done() {
	long trans_time=System.currentTimeMillis()-send_start;
	interpolator.update(level,uncompr_len,compress_time,compr_len,trans_time);
}
This method represents the second half of the measurement and it does the real update, based on
the measured transmission time, after the ack has arrived.

Field Summary
protected Interpolator	interpolator	The interpolator to update.
protected int	level
protected int	uncompr_len
protected int	compr_len
protected long	compress_time
protected long	send_start