I'm trying to model class relationships in Cairngorm micro-architecture for Flex RIA applications. I have a little confusion.
For example, I have two classes FrontController and Controller. Controller extends FrontController. On the other side, I have ICommand interface and SaveEmployeeCommand which implements ICommand.
FrontController has this two methods...
public function addCommand( commandName : String, commandRef : Class, useWeakReference : Boolean = true ) : void
{
if( commands[ commandName ] != null )
throw new CairngormError( CairngormMessageCodes.COMMAND_ALREADY_REGISTERED, commandName );
commands[ commandName ] = commandRef;
CairngormEventDispatcher.getInstance().addEventListener( commandName, executeCommand, false, 0, useWeakReference );
}
/**
* Executes the command
*/
protected function executeCommand( event : CairngormEvent ) : void
{
var commandToInitialise : Class = getCommand( event.type );
//#### THIS IS DEPENDENCY ON ICommand INTERFACE ####
var commandToExecute : ICommand = new commandToInitialise();
commandToExecute.execute( event );
}
Controller has init method in constructor wich is like this...
public function init():void
{
// SaveEmployeeEvent extends CairngormEvent
// SaveEmployeeComma开发者_StackOverflownd implements ICommand interface
//### THIS IS DEPENDENCY ON SaveEmployeeEvent AND SaveEmployeeCommand ###
addCommand(SaveEmployeeEvent.SAVE, SaveEmployeeCommand);
}
So, let's consider just dependencies on commands. If we look at code we will see that FrontController has dependency on ICommand and that Controller has some kind of dependency on SaveEmployeeCommand.Should I show both 'Controllers->Commands' dependencies on UML class diagram?(First dependency is FrontController->ICommand, second is Controller->SaveEmployeeCommand)
My confusion is about inheritance part. If I put inheritance relationship between FrontController and Controller, it means that Controller is also FrontController, so he has dependency on ICommand too(dependency is inherited with addCommand method). How should I model this situation? I put some example of possible solution... Any suggests?The relations in your diagram look correct, except for the stereotype. I would change dependency between FrontController and ICommand to <<Instantiate>>
.
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