Ding, you are correct, at least according to the Boggs UMLw/Rose book, but
unfortunately the Documentation (at least the online HELP) included with rose says that
protected and private export control types for attributes and operations are identical
and indicate that the
visibility for such operations/attributes are for nested classes, friends or the class
itself.
Unfortunately, ADA doesnt support this notion that a "protected" operation/attribute
respresents those
qualities that should be inherited by a sublass, in fact, there is a distinct
difference between protected and
private in ADA95, which with the lmited and tagged modifiers allow ada95 to provide an
Object Oriented
development strategy which is far more friendly to the world of concurrency than C++.
Unfortunately I don't fully understand the interaction of these keywords, and to the
extent that I do understand them
there is no direct 1-1 mapping of the Ada concepts to the Rose/UML concepts.
But, i guess my "problem" as it is, is solved, it is my "understanding" of the
solution that still leaves me feeling
a little unfulfilled. :)
regards
ashley raiteri
boeing awacs sw
>>Private operations/attributes are not supposed to be inherited. I think what
you really want are "PROTECTED" operations/attributes, >>which are only visible to
subclasses.
>>- Ding
> -----Original Message-----
> From: EXT-Raiteri, Ashley L [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, February 21, 2001 1:41 PM
> To: List - Rose Forum
> Subject: RE: (ROSE) Subclasses and Visible Inherited
> Operations/Attributes
>
>
>
> > In reply to my query below,
> >
> > > When creating a subclass from an abstract base class,
> > > I cannot seem to get the operations and attributes of
> > > the parent class to become visible on the
> > > specification of the subclass.
> > > its a question of HOW to get the operations and
> > > attributes of the parent to show up as inherited
> > > operations/attributes in the
> > > sublcass specification.
> >
> > Anthony had this to say:
> >
> > > ...in the more recent releases,
> > > you see the operations in the specification
> > > Rose does know these elements are inherited
> > > for example: drag the subclass into a
> > > sequence diagram and the inherited operations
> > > are on the selection list
> > > **(normal visibility rules apply -
> > > so you won't see private superclass operations
> > in the subclass)**
> >
> > This is exactly my problem. I neglected to mention in the first email, if the
>operations
> > and attributes are set to public instead of private, then the operations and
>attributes ARE visible on my
> > subclasses's properties tab.
> > But the understanding I had was that PRIVATE operations and attributes SHOULD be
>inherited, only the
> > IMPLEMENTATION operations and attributes should be SO private that only the
>superclass has visibility to them.
> > And the PROTECTED ones can be 'seen/used' by FRIENDS (which is not an ADA concept).
> >
> > So if I make the type of the operations PUBLIC, then the inherit seems to work,
>but that isn't really what I want is it?
> > I want the operations/attributes to be PRIVATE and to be inherited.
> >
> > What am I missing here?
> >
> >
> regards,
> ashley raiteri
> boeing awacs sw
>
>
>
>
>
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