On 03/05/2012 10:19, Bert Verhees wrote: > Hi all, > > Please allow me a short question. > > Is it allowed to define abstract types in archetypes, I once saw an > archetype which held an EVENT as attribute, so the constructor of the > rm-object which had to be validated against the archetype, could at > runtime decide if he wanted to use a POINT_EVENT or INTERVAL_EVENT. > Is this allowed?
the runtime has to decide (if not already decided by the archetypes or templates) - there is no choice! > > Same can occur with data_structures and data_values. > > Suppose (theoretically) an archetype which has LOCATABLE as > definition-class. > It allows virtually everything as valid rm-object. it would but you can't state any interesting constraints with just LOCATABLE, so it is more likely to be something like EVENT. - thomas
