// Sensor client
//
// Usage: SensorClient
//
// The servers host names and port numbers are read from
// the SensorServer.port and EMServer.port files.
//
// Uses the SensorServer and EMServer to simulate the example from
// section 1 of "Time-Recursive EM Examples", R. Perry, June 1998.

import java.io.*;
import java.rmi.*;

public class SensorClient {

  private static int N = 50;

  public static void main(String args[]) throws Exception
  {
    int port;
    String serverhost, rmi;
    BufferedReader fin;

    // connect to Sensor Server
    //
    fin = new BufferedReader( new FileReader( "SensorServer.port"));
    serverhost = fin.readLine();
    port = new Integer(fin.readLine()).intValue();
    fin.close();

    rmi = "rmi://" + serverhost + ":" + port + "/SensorServer";

    System.err.println( "SensorClient: contacting " + rmi);

    Sensor S = (Sensor) Naming.lookup( rmi);

    // connect to EM Server
    //
    fin = new BufferedReader( new FileReader( "EMServer.port"));
    serverhost = fin.readLine();
    port = new Integer(fin.readLine()).intValue();
    fin.close();

    rmi = "rmi://" + serverhost + ":" + port + "/EMServer";

    System.err.println( "SensorClient: contacting " + rmi);

    EM em = (EM) Naming.lookup( rmi);


    // process N samples
    //
    double yK;
    int bK;

    for( int k = 0; k < N; ++k) {

      yK = S.get_y();

      System.out.println( "yK = " + yK);

      bK = em.get_b( yK);

      System.out.println( "bK = " + bK);
    }

  }
}