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 [email protected], "Amy" <amyblankens...@...> wrote:
>
> --- In [email protected], "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
>
