Unfortunately the TreeControl currently has some problems dealing with the "on demand paging" feature of FDS. These are known issues we are trying to get addressed. Though in this case you probably don't have paging turned on, when you refresh a fill which causes a new item to be inserted into a collection we push an "update collection" message which contains the position and identity of the object to add to the collection. When the update collection message is received by the client, it inserts the id at that location and if the item is not available it issues a page request to fetch it. In the meantime we also need to tell the array collection that the new item has been inserted with a collection change event.
In this exception, the tree control is responding to that event by trying to fetch the missing item. The ItemPendingError indicates that the item is just not available yet... the TreeControl should be catching and ignoring this error but it is not. If you extend the TreeControl, override the collectionChangeHandler to catch and ignore ItemPendingErrors it would likely workaround this problem. We'll send another replace event when the item arrives and the tree control would hopefully update itself in response to that event. Jeff ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Harris Reynolds Sent: Wednesday, April 18, 2007 8:28 AM To: [email protected] Subject: [flexcoders] FDS Polling Exception Has anyone ever seen this? My app is using the polling mechanism of FDS and is getting this after I call transaction.refreshFill via a remoting call. ~harris Error: Item requested item is not available. A request for the item is now pending. at mx.data::DataList/http://www.adobe.com/2006/flex/mx/internal::requestI <http://www.adobe.com/2006/flex/mx/internal::requestI> temAt() at mx.data::DataList/getItemAt() at mx.collections::ListCollectionView/getItemAt() at ::ListCollectionViewCursor/moveNext() at mx.controls.treeClasses::HierarchicalCollectionView/::getVisibleLocati on() at mx.controls.treeClasses::HierarchicalCollectionView/collectionChangeHa ndler() at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEv entFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.collections::ListCollectionView/dispatchEvent() at mx.collections::ListCollectionView/::addItemsToView() at mx.collections::ListCollectionView/::listChangeHandler() at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEv entFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.data::DataList/http://www.adobe.com/2006/flex/mx/internal::applyUpd <http://www.adobe.com/2006/flex/mx/internal::applyUpd> ateCollection() at mx.data::ConcreteDataService/http://www.adobe.com/2006/flex/mx/interna <http://www.adobe.com/2006/flex/mx/interna> l::processUpdateCollection() at mx.data::ConcreteDataService/http://www.adobe.com/2006/flex/mx/interna <http://www.adobe.com/2006/flex/mx/interna> l::mergeMessage() at mx.data::ConcreteDataService/::messageHandler() at flash.events::EventDispatcher/flash.events:EventDispatcher::dispatchEv entFunction() at flash.events::EventDispatcher/dispatchEvent() at mx.messaging::Consumer/::messageHandler() at mx.messaging::Consumer/http://www.adobe.com/2006/flex/mx/internal::dis <http://www.adobe.com/2006/flex/mx/internal::dis> patchMessageList() at ::PollCommandMessageResponder/PollingChannel.as$33:PollComm andMessageResponder::resultHandler() at mx.messaging::MessageResponder/result()
