Problem inserting data into Coredata while parsing data on thread iphone sdk

Question

Hi all,

In my application I need to cache the data that's being parsed for which I'm using coredata and inserting it in managedobjectcontext on a thread which is performing the xml parsing function. So this thread is performing two things: parsing and inserting in coredata.

I'm using the following function:

-(void)saveData
{

self.managedObjectContext = appDelegate.managedObjectContext;

if(anEvent)
{
    //Create an object
    Event * newEvent = (Event *)[NSEntityDescription 
                                 insertNewObjectForEntityForName:@"Event" 
                                 inManagedObjectContext:self.managedObjectContext];

    // Step 2: Set Properties
    [newEvent setId:anEvent.id];
    [newEvent setEletitle:[NSString stringWithFormat:@"%@", anEvent.eletitle]]; 
    [newEvent setSortId:(NSInteger)sortId +1];
    [newEvent setEletxt:[NSString stringWithFormat:@"%@", anEvent.eletxt]];
    // Step 3: Save Object
    [self saveAction];
}
}

The problem I'm facing is anEvent object containing the values, they are not getting inserted in newEvent. After inserting any property, when I check the property in newEvent then I see the property type gets converted into "NSTemporaryObjectId_Default".

All my coredata initialisations are in appDelegate and I'm borrowing the context in a new class.

Can anybody please help?

Thanx in advance.