Problems with offline caching

Question

In a recent AIR 2.6 application I use the offline caching feature of LCDS 3.1
The application itself uses a Java 6 / Spring 3 / JPA 1 / Hibernate stack (custom code, not using LC model driven development). For offline support, I started with the sample code from the LCDS 3.1 documentation which works ok in most cases - at least, if I fetch collections when online, then go to offline mode and fetch the same collections from the cache. This works fine and the SQLite data base gets created correctly.
However, as soon as I start calling fill() on a DataService in offline mode on a collection that has *not* been fetched before or try to load an lazy association which has not been fetched before, the DataService "hangs" in terms of that the AsyncToken returned by that fill() method never fires a result or fault event.
The last thing that happens in the client is
  [DEBUG] mx.data.SQLDBCache SQLDBCache - before select: SELECT id,data FROM [ORGANIZATION_FAVSOrganization]
and that’s it. In this case I don’t get any further feedback and the DataService does not create a result or fault event, it does not even time out. Not sure if this is by design or not but as I’m listening for result/faults event to display/hide progress indicators gives me a lot of headaches on how to control them in offline mode.
Any ideas?
Thanks,
Dirk

Answer 1

Harry, thank you for your immed response.
I think I might have posted my problem under a wrong thread. I am facing this issue for older version of LCDS which I downloaded couple of years back.. it says ES 2.6 and am still a bit confused about the version numbers.
That being said, my problem is exactly the same. Everything works fine when LCDS server is reachable. However when offline, Fill() just does not call any of the handlers.
In case if you can still help:
Here is the DS definition:
     public class UsersDataService extends EventDispatcher implements IFITDataService
          private var mDS:DataServiceWrapper;
          private var mAllUsers:ArrayCollection;
          public function UsersDataService()
               mDS = new DataServiceWrapper("UserInfo");
               mDS.cacheID = "allusers"
               mAllUsers = new ArrayCollection();
               mDS.addEventListener(DataServiceFaultEvent.FAULT,OnFault);
               mDS.autoConnect = true;
          public function getAllUsers(locationId:String):void
               mDS.addEventListener(ResultEvent.RESULT, OnResult);
               if(mDS.isCollectionManaged(mAllUsers))
                    mDS.refreshCollection(mAllUsers);
               else
                    mDS.fill(mAllUsers, locationId);
          public function getUser(userName:String):void
               mDS.addEventListener(ResultEvent.RESULT, OnResult);
               mDS.getItem({ID:userName});
          public function OnResult(event:ResultEvent):void
               mDS.removeEventListener(ResultEvent.RESULT, OnResult);
               trace(event)
               var dsEvent:DataServiceEvent = new DataServiceEvent(DataServiceEvent.Result)
               dsEvent.user = event.result
               dispatchEvent(dsEvent);
          public function OnFault(event:FaultEvent):void
               trace(event)
          public function getData(locationId:String):void
               getAllUsers(locationId);
          public function refresh():void
               if(mDS.isCollectionManaged(mAllUsers))
                    mDS.addEventListener(ResultEvent.RESULT, OnResult);
                    mDS.refreshCollection(mAllUsers);
               else
                    getAllUsers(FITSession.regLocationID);
          public function get users():ArrayCollection
               return mAllUsers
          public function get connected():Boolean
               return mDS.connected;
I am also attaching the 'allusers' db
Thanks much!