stella.rmi

Interface RmiDataCollecting

All Superinterfaces:

Remote

public interface RmiDataCollecting
extends Remote

Data collectors are only used by a SensorRepository. After collecting some sensor datas, this class averages over the data collected and calls its registered data collectors rmiProcessData(java.util.Map<java.lang.String, stella.DataEvent>, boolean) method. The data collectors are responsible for further processing the data, e.g. they can write it into a data-base or display it graphically.

Method Summary

Modifier and Type	Method and Description
long	rmiGetInterval() Returns the intervall in which the listener wants to be notified.This is devided by the repositories base intervall to yield the number of averaged data events used for notification.
void	rmiProcessData(Map<String,DataEvent> sensors, boolean weather) This method is called after the stella.sensor.ShortAverageRepository collected some data.

Method Detail

rmiProcessData

void rmiProcessData(Map<String,DataEvent> sensors,
                    boolean weather)
             throws RemoteException

This method is called after the stella.sensor.ShortAverageRepository collected some data. In the argument, all sensors that have at least once in the liftime of the repository delivered data are mapped against the average DataEvent of all data events sent during the averaging period. Note that it is in principle possible that the sensor mapped has not produced a single data event in the last averaging period and therfore is mapped to null.

This version is the remote counterpart to DataCollecting. It should be used with data collectors that reside in a different VM than the repository

Throws:

RemoteException

rmiGetInterval

long rmiGetInterval()
             throws RemoteException

Returns the intervall in which the listener wants to be notified.This is devided by the repositories base intervall to yield the number of averaged data events used for notification. Notificatioin is done using the last xx averaged data events produced, thus it is an average-of-averages, which is perfectly okay since we only consider averages and min/max, but no 2nd or higher order moments.

Throws:

RemoteException