[Uml-devel] Interfaces not properly implemented
thomas at mail630.gsfc.nasa.gov
Tue Mar 11 10:46:09 UTC 2003
I was taking a look at how to generate interface classes in the javawriter
and discovered what I think is an error in the abstraction of the "UMLConcept"
and "UMLInterface" classes ... namely that they arent related at all, except at
the UMLCanvasObject level, which is too far down the inheritance tree. From
the UML Notation Guide, an "interface" is defined as a "specifier of visible operations
on a class, component or other classifier". The spec goes on to say that an
interface is "formally equivalent to an abstract class with no attributes or methods
and only abstract operations"
This suggests to me that the inheritance should be the following:
I would make "UMLConcept" an abstract class. (BTW, where does the name "UMLConcept"
come from? I cant find it in the UML docs..perhaps I didnt look hard enough?? Its not mentioned
in any of the UML guide books I have either).
I have code that largely does this now and would like to submit it to the project.
Any comments on this proposal?
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