Hi,
you would need to be carefull, because the command instances are
created once only at creation of the FrontController. By creating a
delegate instance, you are using the ServiceLocator to look up the
remote object, however, if your service locator hasn't been
initialized yet, you may get a no service found error. So make sure
your services are created before you front controller if you are going
to take this approach.
--- In flexcoders@yahoogroups.com, "flexcoding" <[EMAIL PROTECTED]> wrote:
> 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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