Package org.apache.hadoop.tools

Class CommandShell.SubCommand

java.lang.Object

org.apache.hadoop.tools.CommandShell.SubCommand

Enclosing class:

CommandShell

protected abstract class CommandShell.SubCommand
extends java.lang.Object

Base class for any subcommands of this shell command.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SubCommand()

Method Summary

Modifier and Type	Method	Description
abstract void	execute()
abstract java.lang.String	getUsage()
boolean	validate()

Methods inherited from class java.lang.Object

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

Constructor Detail

SubCommand

protected SubCommand()

Method Detail

validate

public boolean validate()

execute

public abstract void execute()
                      throws java.lang.Exception

Throws:

java.lang.Exception

getUsage

public abstract java.lang.String getUsage()