Class Prefix

java.lang.Object
org.jcsp.plugNplay.Prefix
All Implemented Interfaces:
CSProcess

public final class Prefix extends Object implements CSProcess
Prefixes a user-supplied object to the Object stream flowing through.

Process Diagram

Description

This is a process which first outputs a given Object and then copies its input stream of Objects to its output stream.

One output is gererated before any input but, thereafter, one output is produced for each input.

Channel Protocols

Input Channels
in java.lang.Object The in Channel can accept data of any Class.
Output Channels
out java.lang.Object The out Channel sends the the same type of data (in fact, the same data) as is input.

Implementation Note

The implementation uses an Identity process for the copy loop:
   public void run () {
     out.write (o);                     // prefix the given object to the stream
     new Identity (in, out).run ();     // copy the stream
   }
 
Author:
P.H. Welch
  • Constructor Details

    • Prefix

      public Prefix(Object o, ChannelInput in, ChannelOutput out)
      Construct a new Prefix process with the input Channel in and the output Channel out.
      Parameters:
      o - the initial Object to be sent down the Channel.
      in - the input Channel
      out - the output Channel
  • Method Details

    • run

      public void run()
      The main body of this process.
      Specified by:
      run in interface CSProcess