myhw3.data

Class CmdClear

java.lang.Object

myhw3.data.CmdClear

All Implemented Interfaces:

Command

final class CmdClear
extends java.lang.Object
implements Command

Implementation of command to clear the inventory.

See Also:

Data

Field Summary

Fields

Modifier and Type	Field and Description
private InventorySet	inventory
private java.util.Map<Video,Record>	oldvalue

Constructor Summary

Constructors

Constructor and Description
CmdClear(InventorySet inventory)

Method Summary

Modifier and Type	Method and Description
void	redo() Redo the command.
boolean	run() Do the command.
void	undo() Undo the command.

Methods inherited from class java.lang.Object

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

Field Detail

inventory

private InventorySet inventory

oldvalue

private java.util.Map<Video,Record> oldvalue

Constructor Detail

CmdClear

CmdClear(InventorySet inventory)

Method Detail

run

public boolean run()

Description copied from interface: Command

Do the command.

Specified by:

run in interface Command

Returns:

true if command succeeds, false otherwise

undo

public void undo()

Description copied from interface: Command

Undo the command.

Specified by:

undo in interface Command

redo

public void redo()

Description copied from interface: Command

Redo the command.

Specified by:

redo in interface Command