Re: [SED-ML-discuss] more schema updates

[Lucian S. <lp...@sp...>]

* Nicolas Le novère <le...@eb...> [2010-06-09 08:44] writes:
> On 08/06/10 19:07, Frank Bergmann wrote:
> 
> > I'm still missing the most important one ... the fix to the ChangeXML ...
> > implementing adding of elements by having to replace an existing model
> > element with itself and another one is just plain wrong!
> 
> It is not a "fix", and replacing the containing element is not "plain 
> wrong". It is just verbose. But we are talking of computers here. verbosity 
> is not the main concern. Unambiguity is. We may want to separate the 
> semantics of the XPath for addition and removal. But not doing so does not 
> break SED-ML.

I would say that semantically, the current method of adding a new element 
to a file is indeed wrong, because you must replace the element just 
before it with itself plus a new element.  What if you wanted to add an 
AssignmentRule to a model that had no AssignmentRules?  You replace the 
RateRules with the exact same set of RateRules, plus a new set of 
AssignmentRules?  That's just weird.  Adding 'add' is a clear semantic 
fix.

-Lucian