org.perfectjpattern.core.behavioral.command
Class Command<P,R>

java.lang.Object
  org.perfectjpattern.core.behavioral.command.Command<P,R>

Type Parameters:

P - Command Parameter context-specific.

R - Command Result context-specific.

All Implemented Interfaces:

ICommand<P,R>

Direct Known Subclasses:

ParameterlessCommand

public class Command<P,R>
extends Object
implements ICommand<P,R>

Base core implementation of ICommand interface.

Version:

$Revision: 1.0 $ $Date: Jun 23, 2007 3:00:54 AM $

Author:

Giovanni Azua

See Also:

ICommand

Constructor Summary

Command()

Command(IReceiver<P,R> aReceiver)

Method Summary

void	execute() Executes the ICommand.
R	getResult() Returns the result of this ICommand execution.
void	setParameter(P aParameter) Sets the parameter required for the execution of the target IReceiver.
void	setReceiver(IReceiver<P,R> aReceiver) Sets the IReceiver associated to this ICommand

Methods inherited from class java.lang.Object

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

Constructor Detail

Command

public Command()

Command

public Command(IReceiver<P,R> aReceiver)

Method Detail

getResult

public R getResult()
            throws IllegalStateException

Returns the result of this ICommand execution.

Specified by:

getResult in interface ICommand<P,R>

Returns:

Result of this ICommand execution.

Throws:

IllegalStateException - IReceiver was not set.

setParameter

public void setParameter(P aParameter)
                  throws IllegalArgumentException

Sets the parameter required for the execution of the target IReceiver.

Specified by:

setParameter in interface ICommand<P,R>

Parameters:

aParameter - Parameter required for the execution of the target IReceiver.

Throws:

IllegalArgumentException - 'aParameter' must not be null.

setReceiver

public void setReceiver(IReceiver<P,R> aReceiver)
                 throws IllegalArgumentException

Sets the IReceiver associated to this ICommand

Specified by:

setReceiver in interface ICommand<P,R>

Parameters:

aReceiver - to set

Throws:

IllegalArgumentException - 'aReceiver' must not be null.

execute

public void execute()
             throws IllegalStateException

Executes the ICommand.

Specified by:

execute in interface ICommand<P,R>

Throws:

IllegalStateException - IReceiver was not set.