org.jplate.foundation.gof.command
Interface CommandIfc

public interface CommandIfc

Defines the "Gang of Four" Command pattern: "Encapsulate a request as an object, thereby letting you parameterize clients with different requests, queue or log requests, and support undoable operations," p107 Design Patterns - Elements of Reusable Object-Oriented Software. All state is encapsulated in implementations.

The following example illustrates a trivial implementation of a person and a command for creating the person:

public final class Person
{
    private String _name;
    private int    _age;

    public Person ()
    {
    }

    public String getName () { return _name; }

    public void setName ( final String name ) { _name = name; }

    public int getAge () { return _age; }

    public void setAge ( final String age ) { _age = age; }
}

public final class CreatePersonCommand implements CommandIfc
{
    private final Person _person;

    public CreatePersonCommand ( final Person person )
    {
        _person = person;
    }

    private CreatePersonCommand ()
    {
    }

    public void execute ()
    {
        //
        // Persistance work here to take
        // _person and create that person...
        //
    }
}

    
Modifications:
    $Date: 2008-12-02 12:32:45 -0500 (Tue, 02 Dec 2008) $
    $Revision: 479 $
    $Author: sfloess $
    $HeadURL: https://jplate.svn.sourceforge.net/svnroot/jplate/trunk/src/dev/java/org/jplate/foundation/gof/command/CommandIfc.java $
    










Method Summary




 void
execute()



          Executes the command.


 





Method Detail



execute
void execute()
             throws ExecuteException

Executes the command.



Throws:
ExcecuteException - If any problems arise executing the command.
ExecuteException