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Re: [Gnumed-devel] further testing / bugs

From: Hilmar Berger
Subject: Re: [Gnumed-devel] further testing / bugs
Date: Tue, 9 Aug 2005 20:47:45 +0200

On Tue, 9 Aug 2005 19:43:17 +0200
Karsten Hilbert <address@hidden> wrote:

> Upon receiving the NOTIFY gmBackendListener will invoke the
> callbacks registered for this NOTIFY. The only registered
> listener is the method _db_callback_episodes_modified() in 
> cClinicalRecord. This method flushes the "episodes" cache.
> It then sends out a *dispatcher* signal "episodes modified".
> The dispatcher sends it to its registered listeners for that
> signal. Which (among others) happens to be a function in the
> EMR tree widget. That function (or any other that happens to
> come first) re-gets the episodes from cClinicalRecord
> thereby triggering a delayed-until-now backend re-fetch into
> the cache thereof.

If this is true, why line A gets executed in the very moment that get_episodes 
called by line B (from EMR tree widget) ???

        def _db_callback_episodes_modified(self):                               
A                        del self.__db_cache['episodes']                        
                except KeyError:                                                
                        del self.__db_cache['problems']                         
                except KeyError:                                                
B                gmDispatcher.send(signal = gmSignals.episodes_modified(), 
sender = self.__class__.__name__)           
                return 1                                                        



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