Is it OK to have a constructor in the Command classes and have
delegate initialized there rather than doing it in every time
execute method is called?
So Could the code of LoginCommand of sample code that came with
CAIRNGORM 0.99 be changed to:
class org.nevis.cairngorm.samples.login.commands.LoginCommand
implements Command, Responder
{
private var delegate: CustomerDelegate;
public function LoginCommand ()
{
delegate = new CustomerDelegate( this );
}
public function execute( event:Event ) : Void
{
var loginVO : LoginVO = LoginVO( event.data );
delegate.login( loginVO );
}
//-------------------------------------------------------------------
------
public function onResult( event : Object ) : Void
{
ModelLocator.workflowState =
ModelLocator.VIEWING_LOGGED_IN_SCREEN;
var loginDate : Date = Date( event.result );
ModelLocator.loginDate = loginDate;
}
//-------------------------------------------------------------------
------
public function onFault( event : Object ) : Void
{
ModelLocator.statusMessage = "Your username or password was
wrong, please try again.";
}
}
from
/*
Copyright 2005 iteration::two Ltd
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied.
See the License for the specific language governing permissions and
limitations under the License.
@ignore
*/
import org.nevis.cairngorm.business.Responder;
import org.nevis.cairngorm.commands.Command;
import org.nevis.cairngorm.control.Event;
import org.nevis.cairngorm.samples.login.business.CustomerDelegate;
import org.nevis.cairngorm.samples.login.vo.LoginVO;
import org.nevis.cairngorm.samples.login.model.ModelLocator;
/**
* @version $Revision: 1.4 $
*/
class org.nevis.cairngorm.samples.login.commands.LoginCommand
implements Command, Responder
{
public function execute( event:Event ) : Void
{
var delegate: CustomerDelegate = new CustomerDelegate(
this );
var loginVO : LoginVO = LoginVO( event.data );
delegate.login( loginVO );
}
//-------------------------------------------------------------------
------
public function onResult( event : Object ) : Void
{
ModelLocator.workflowState =
ModelLocator.VIEWING_LOGGED_IN_SCREEN;
var loginDate : Date = Date( event.result );
ModelLocator.loginDate = loginDate;
}
//-------------------------------------------------------------------
------
public function onFault( event : Object ) : Void
{
ModelLocator.statusMessage = "Your username or password was
wrong, please try again.";
}
}
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