org.jcsp.plugNplay

Class Tail

java.lang.Object

org.jcsp.plugNplay.Tail

All Implemented Interfaces:

CSProcess

public final class Tail
extends java.lang.Object
implements CSProcess

The output stream is the tail of its input stream.

Process Diagram

Description

The first Object (i.e. head) of its input stream is not forwarded. The rest (i.e. tail) is copied through unchanged.

Two inputs are needed before any output is produced 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 will send data of the same type as that sent down the in Channel.

Implementation Note

The implementation uses an Identity process for the copy loop:

   public void run () {
     in.read ();                        // accept, but discard, the first item
     new Identity (in, out).run ();     // copy the rest of the stream
   }
 

Author:

P.H. Welch and P.D. Austin

Constructor Summary

Constructors

Constructor and Description
Tail(ChannelInput in, ChannelOutput out) Construct a new Tail process with the input Channel in and the output Channel out.

Method Summary

Modifier and Type	Method and Description
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

Tail

public Tail(ChannelInput in,
            ChannelOutput out)

Construct a new Tail process with the input Channel in and the output Channel out.

Parameters:

in - the input Channel

out - the output Channel

Method Detail

run

public void run()

The main body of this process.

Specified by:

run in interface CSProcess