[OGo-Developer] how to call -flushDataCache automatically?

[elim]

I've an EO class that implements data caching for some converted data from an attribute:
 
- (NSDictionary *)propertiesFromXML {
    if(!_propertyFromXML) {
        _propertyFromXML = [[self dictionaryFromXML: [self propertyXML]] retain];
    } 
    return _propertyFromXML;
}
 
where propertyXML is an attribute of the EO entity corresponding to a database 
table column.
 
When some changes committed via an eo of such class,
I'm looking for a solution to trigger
 
- (void)flushDataCache {
   [_propertyFromXML  release];
   _propertyFromXML  = nil;
}
 
automatically for all eo's with the same globalID, exist in the same app as well as other apps.
 
I've a typical change notification framework working. But it cannot take care of the auto synch
of derived data from eo attributes.
 
Thanks a lot,
 
YL
  




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