one more thing,
AdvancedDataGrid doesnt support DataDescriptor...
--- In flexcoders@yahoogroups.com, "yossi.baram" <yossi.ba...@...> wrote:
>
> wow Amy,
> Some of your articles helped me a lot, realy thanks you:)
> Now I looked at your example and using AdvacedDataModel with RmoteObject,
> getting the data from my Java code, couldnt rally see how can I use it
> (although I would love to), if you can guide me with the adaptations, please
> do...
>
> I actaualy used your advice regards the AsyncToken, and I have some results,
> I get the data from the server, but I have lots of problem controlling the
> expand of the desired branch, when I click the branch, the data is fetched
> using the RemoteObject but childrens expand and collapse immidiatly :(
>
> My code:
>
> in my mxml:
> 1. I load first the data for the dataprovider to show only parents
> 2. When we click on the closed parentId we activate:
>
> private function onItemOpen(event:AdvancedDataGridEvent ) : void
> {
> var remoteService:RemoteObject=getDataFromHandler();
> // getLazyData is the func from my server to get the data
> var news:AsyncToken = remoteService.getLazyData
> (event.item.GroupLabel);
> news.addResponder(new mx.rpc.Responder(setAttributes, onFault));
> }
>
> public function getDataFromHandler(): RemoteObject {
> dataService = new RemoteObject("MyHandler1");
> dataService.showBusyCursor = true;
> dataService.destination="DataGridRemote";
> return dataService;
> }
>
> The RemoteObject goes to the server and when its back it activates:
> protected function setAttributes(event: ResultEvent): void {
> var dm:DataModel;
> // my object from the server
> dm = DataModel(event.result); model =
> MatrixDataModel(dm.model.getItemAt(0));
> // my function that converts my Object to DataProvider
> remoteDP = createProvider(model); //
> Create Headers
> createHeaders();
> // create upper group columns
> setGroupedColumns();
>
> }
>
> It sims that the correct data is on the grid but after a split sec it
> collapse.
> WHY???
> Can i use your code to make all better?
>
> Thanks a lot for all your help, really
>
> Jo
>
> --- In flexcoders@yahoogroups.com, "Amy" <amyblankenship@> wrote:
> >
> > --- In flexcoders@yahoogroups.com, "yossi.baram" <yossi.baram@> wrote:
> > >
> > > Hi guys,
> > > I am strugeling to figure out lazy loading in my AdvancedDataGrid.
> > > I didnt find any relevant document on that.
> > > If I'm using ItemRenderer for my columns to do manipulation on the data,
> > > it is executed when I click on the grouped (branch )column.
> > > This is good if I ahve a dataprovider with all data.
> > > But if I want lazy loading,
> > > When or where should I create my RemoteObject to fetch the relevant data
> > > from the server?
> >
> > I typically create a static class to use for the RemoteObject. Each custom
> > typed object in the collection has a reference to it and a method that can
> > be called to tell it to load children.
> >
> > > Can I do it in my ItemRenderer?
> > > Other option, If I catch a click from my AdvancedDataGrid and figure out
> > > the parentId, and fetch the relevant data from the server, how can I
> > > activate the Itemrenderer that I need to manipulate with this new data?
> >
> > The dataProvider for your ADG will always be a HierachichalCollectionView,
> > which means you can easily get from parent to child and vice versa.
> >
> > If you start out with an empty ArrayCollection as the children property on
> > each of your objects, then when that AC is updated (NOT REPLACED) by the
> > result of a Remote Object call, then the AC should generate whatever events
> > the ADG needs to fill itself in.
> >
> > > Many questions regard this Lazy loading, can you guide me here please?
> >
> > You might find this example helpful:
> >
> > http://flexdiary.blogspot.com/2009/01/lazy-loading-tree-example-file-posted.html
> >
> > HTH;
> >
> > Amy
> >
>
