All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class jcsp.util.buildingblocks.Or

java.lang.Object
   |
   +----jcsp.util.buildingblocks.Or

public final class Or
extends Object
implements CSProcess

Process Diagram

    in1  _______
   -->--|       | out
    in2 |   Or  |-->--
   -->--|_______|

Description

The Or class is a process which has an infinite loop that waits a Object of type Number to be sent down each of the in1 and in2 Channels. The process then calculates the bitwise OR on the intValue() of the two Numbers then write the result as a new Integer down the out Channel.

Channel Protocols

Input Channels
in1,in2	java.lang.Number	Both Channels can accept data from any subclass of Number. It is possible to send Floats down one channel and Integers down the other. However all values will be converted to ints.
Output Channels
out	java.lang.Integer	The output will always be of type Integer.

Example

The following example shows how to use the Or process in a small program. The program also uses some of the other building block processes. The program generates a sequence of numbers and rounds each even number up to the nearest odd number and prints this on the screen.

 import jcsp.lang.*;
 import jcsp.util.*;
 public class OrExample {
   public static void main(String[] argv) {
     Channel a = new One2OneChannel();
     Channel b = new One2OneChannel();
     Channel c = new One2OneChannel();
     new Parallel(new CSProcess[] {
       new Nos(a),
       new Or(a, b, c),
       new Printer(c),
       new CSProcess() {
         public void run() {
           Integer orVal = new Integer(1);
           while (true) {
             b.write(orVal);
           }
         }
       }
     }).run();
   }
 }

Author:: P.D.Austin

Or(ChannelInput, ChannelInput, ChannelOutput): Construct a new Or process with the input Channels in1 and in2 and the output Channel out.

run(): The main body of this process.

 public Or(ChannelInput in1,
           ChannelInput in2,
           ChannelOutput out)

Construct a new Or process with the input Channels in1 and in2 and the output Channel out. The ordering of the Channels in1 and in2 make no difference to the functionality of this process.

Parameters:: in1 - The first input Channel; in2 - The second input Channel; out - The output Channel

run

 public void run()

The main body of this process.

All Packages  Class Hierarchy  This Package  Previous  Next  Index