org.simoes.lpd.command
Class CommandHandler

java.lang.Object
  org.simoes.lpd.command.CommandHandler

Direct Known Subclasses:

CommandPrintJob, CommandReceiveJob, CommandRemovePrintJob, CommandReportQueueStateLong, CommandReportQueueStateShort

public abstract class CommandHandler

extends java.lang.Object

This class is the super class for any class that handles a lpd command.

Author:

Chris Simoes There will be several subclasses for each top level command of the lpd deamon.

Field Summary

protected byte[]	command
protected java.io.InputStream	is
protected java.io.OutputStream	os

Constructor Summary

protected

CommandHandler(byte[] c, java.io.InputStream i, java.io.OutputStream o)

Method Summary

abstract void

execute() Processes the command in the concrete subclass.

Methods inherited from class java.lang.Object

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

Field Detail

command

protected byte[] command

is

protected java.io.InputStream is

os

protected java.io.OutputStream os

Constructor Detail

CommandHandler

protected CommandHandler(byte[] c,
                         java.io.InputStream i,
                         java.io.OutputStream o)

Method Detail

execute

public abstract void execute()
                      throws LPDException

Processes the command in the concrete subclass. When a command is sent by the user a concrete class such as CommandReceiveJob runs its execute method to handle the command.

Throws:

LPDException - Throws an LPDException if an error occurs.