Hi, I am pretty new to cocoa so thanks for being patient...

I have spent some time building a command line tool that reads a .txt file 
saved locally by an online poker client.  This file contains data on my own 
playing history.  I have a chunky method that dissects this file and creates 
different objects of type Tournament, Table, Player, Hand, Card etc and works 
well.

Having accomplished this, I set about trying to build a core data app to 
display the data.  I have replicated my model exactly as it is in the original 
project and successfully set bindings etc.  For example, I can create, edit and 
remove players.

But I am entirely stuck on how to join the two projects.   All I really want to 
do is use the method I already have to populate the core data application, but 
despite hours of searching I don't know where or how to start.  I have been 
able to programmatically create new players using:

NSManagedObject *player = [NSEntityDescription 
insertNewObjectForEntityForName:@"Player" inManagedObjectContext:[self 
managedObjectContext]];

I have put this in the init of MyDocument and it creates and dsiplays the 
player (via the binding) as expected.  But what I want to do is use a 
tournament builder class from the original project that takes in a filepath and 
returns a Tournament, complete with all it's players, tables etc.  This 
function works well in the original project but when I try to use it in the 
core data project I get:

Failed to call designated initializer on NSManagedObject class 'Tournament' 

All of my classes have created by xcode and inherit from NSManagedObject.  I 
have then replaced the contents of each .m file with the original classes.

I know I'm doing something horribly wrong here, so my question is this...

How am I meant to load into core data a whole graph of objects (tournament and 
its constituent parts)  that are returned from a function, and where should I 
be putting the code?

Thanks in advance for any help.

Ben_______________________________________________

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