Using the default code generation parameters, you should have no problem
generating a by-value aggregation (Rose places a #include "B.h" in A.h).
You must have modified one of the other code gen parameters to force a
forward reference... and that action will conflict with a by-value
aggregation.
-----Original Message-----
From: Mathieu Girard [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 08, 2001 10:05 AM
To: [EMAIL PROTECTED]
Subject: (ROSE) C++ By-value aggregation warning
Hi all,
We are currently evaluating Rose C++ 2001, trying to recover the model from
Rose C++ 98. Everything seems to work fine, except for the C++ code
generation of by-value aggregations. When generating the code, we get this
brand new message:
<<
Warning: !!! Class "A" has a forward reference to "B"
and it also has a by-value containment of "B."
>>
I think there is a misunderstanding from Rational, which has qualified
"composition" (which means life-cycle control to me) as "by-value"
containment, since the begining of Rose. If a class A composes a class B for
UML, it is perfectly logical (to me) to compose it with a C++ pointer,
provided A is in charge of creation/destruction of B. I think Rational got
mixed-up between logical and physical modelling of composition.
To me, it seems perfectly normal to have a forward declaration of class B in
the header A.h , defining a C++ pointer to B in the definition of class A,
include the header file B.h in the source file A.cpp, and manage the
allocation/deletion of the instance of B in the source file A.cpp.
Obviously, Rose 2001 objects to this, and a new warning has been added.
Does anyone of you know how to disable this warning? I have parsed the
option tabs of Rose, and could not find anything to get rid of it...
Regards,
Mathieu
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