edu.washington.cs.supple.customization.command
Class CommandSingleReversal

java.lang.Object
  edu.washington.cs.supple.customization.command.CommandSingleReversal

All Implemented Interfaces:

Command

public class CommandSingleReversal

extends java.lang.Object

implements Command

Reverses a command at a single location only. For example, if the given command is a generalization, it may not be entirely reversed, but only at a single location. This type of "single reversal" is used to make a customization plan executable. Only the minimal number of customizations are reversed, such that the plan is executable (all conditions hold).

Author:

raphael

Constructor Summary

CommandSingleReversal(HistoryRecord record)

CommandSingleReversal(HistoryRecord record, Command creator)

Method Summary

boolean	equals(Command c) Compares this command to another command.
void	execute(State s) Executes the command on a given UI.
void	execute(State s, Specification spec) Applies a command only to a part of a UI.
Action	getAction() Returns the action type used by the command.
java.lang.String	toString() A string representation of the command.

Methods inherited from class java.lang.Object

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

Constructor Detail

CommandSingleReversal

public CommandSingleReversal(HistoryRecord record)

CommandSingleReversal

public CommandSingleReversal(HistoryRecord record,
                             Command creator)

Method Detail

execute

public void execute(State s)
             throws ConditionViolationException

Description copied from interface: Command

Executes the command on a given UI. If the execution succeeds, the state is updated - i.e. the functional spec changes and the history records are added to the history list.

Specified by:

execute in interface Command

Parameters:

s - state of UI

Throws:

ConditionViolationException

execute

public void execute(State s,
                    Specification spec)
             throws ConditionViolationException

Description copied from interface: Command

Applies a command only to a part of a UI.

Specified by:

execute in interface Command

Parameters:

s - state of UI

spec - part of the UI where command is applied

Throws:

ConditionViolationException

getAction

public Action getAction()

Description copied from interface: Command

Returns the action type used by the command. A standard command performs this action at one location of the UI, a generalization command performs this action at several locations of the UI.

Specified by:

getAction in interface Command

Returns:

action

equals

public boolean equals(Command c)

Description copied from interface: Command

Compares this command to another command. The scopes are not being compared, but only the command itself. For instance, if they are both set default commands, then the default values have to match, but not the scopes.

Specified by:

equals in interface Command

Parameters:

c - another command to compare this one to

toString

public java.lang.String toString()

Description copied from interface: Command

A string representation of the command.

Specified by:

toString in interface Command