Classes and subclasses

Richard Durbin rd at sanger.ac.uk
Thu May 4 07:40:02 EST 2000

> Is there some sort of inbuilt limit for subclasses? I seem to recall
> reading somewhere that there might be.  I've started noticing weird
> behaviour as I try to create more than 8 subclasses for any one class.

There is a limit of 8 subclasses per top level class in older versions
of acedb, including I suspect 4_7l, but the code was rewritten to
remove that limit, so that in new versions (4_8 and future) there is
no limit.

> Also...should I be able to (apart from the above complication) be able to
> make subclasses within subclasses (e.g. 'c' is a subclass of 'b' is a
> subclass of 'a')?  
> If so, then when specifying in subclasses.wrm, do I say that 'c' is a
> subclass of 'b' or of 'a'?

Yes, you should be able to have subclasses of subclasses.  You should
say 'c' is a subclass of 'b'.  This still counts as a subclass of 'a'
for the limit of 8 discussed above.


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