jcsp.plugNplay
Class Deparaplex

java.lang.Object
  |
  +--jcsp.plugNplay.Deparaplex

All Implemented Interfaces:

CSProcess

public final class Deparaplex

extends Object

implements CSProcess

This demultiplexes data from its input channel to its output channel array.

Process Diagram

         _______________   out[0]
        |               |--------->
    in  |               |    . 
   ---->| Deparaplex |    .
        |               |    .
        |_______________|--------->
                          out[n-1]
 

Description

Deparaplex is a process to convert the single stream of Object[] packets sent from a Paraplex process on the other end of its in channel back to separate streams (its out channels). It assumes that Paraplex operates on the same size array of channels as its out array. It conforms to contract required by Paraplex for a process receiving its packets.

In each cycle, it inputs one packet and outputs its contents in parallel to each of its output channels. The parallel output means that the process will wait until each item is accepted by every channel -- in whatever order is demanded by its environment. The ordering of the channels in the out array, therefore, makes no difference to the functionality of this process.

Channel Protocols

Input Channels
in	Object[]	A packet carrying the paraplexed data.
Output Channels
out[]	Object	Most channels in this package carry integers.

Example

 import jcsp.lang.*;
 import jcsp.plugNplay.*;
 
 class DeparaplexTest {
 
   public static void main (String[] args) {
 
     final One2OneChannel[] a = One2OneChannel.create (3);
     final One2OneChannel b = new One2OneChannel ();
     final One2OneChannel[] c = One2OneChannel.create (3);
     final One2OneChannel d = new One2OneChannel ();
 
     new Parallel (
       new CSProcess[] {
         new Numbers (a[0]),
         new Squares (a[1]),
         new Fibonacci (a[2]),
         new Paraplex (a, b),
         new Deparaplex (b, c),
         new Paraplex (c, d),
         new CSProcess () {
           public void run () {
             System.out.println ("\n\t\tNumbers\t\tSquares\t\tFibonacci\n");
             while (true) {
               Object[] data = (Object[]) d.read ();
               for (int i = 0; i < data.length; i++) {
                 System.out.print ("\t\t" + data[i]);
               }
               System.out.println ();
             }
           }
         }
       }
     ).run ();
   }
 
 }
 

Author:

P.H.Welch

See Also:

Paraplex, Multiplex, Demultiplex

Constructor Summary

Deparaplex(ChannelInput in, ChannelOutput[] out)
Construct a new Deparaplex process with the input Channel in and the output Channels out.

Method Summary

void	run() The main body of this process.

Methods inherited from class java.lang.Object

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

Constructor Detail

Deparaplex

public Deparaplex(ChannelInput in,
                  ChannelOutput[] out)

Construct a new Deparaplex process with the input Channel in and the output Channels out. The ordering of the Channels in the out array make no difference to the functionality of this process.

Parameters:

in - the input channel

out - the output Channels

Method Detail

run

public void run()

The main body of this process.

Specified by:

run in interface CSProcess