Dietmar ist right. But Rose (up to Rose 2000) offers aggregation only. The
aggregartion could be changed into an composition by changing the
containment to "by value".
possibly this is the source of your question.
axel.
"Dietmar Leibecke"
<Dietmar.Leibecke@t- To: <[EMAIL PROTECTED]>
systems.de> cc:
Sent by: Subject: RE: (ROSE) Composition
aggregation
owner-rose_forum@rat
ional.com
12.02.2002 13:54
Please respond to
"Dietmar Leibecke"
Hi Biniam,
IMHO "by reference" and "by value" are implementation details. In a
composition relationship the "whole" controls the lifetime of the "part".
In
a programming language like C++ the "parts" could be managed by value and
get automatically removed, but it is also possible to hold "parts" by
reference and delete them during destruction of "whole".
Dietmar
-----Urspr�ngliche Nachricht-----
Von: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]Im Auftrag von Biniam Tesfu (PAC)
Gesendet: Dienstag, 12. Februar 2002 12:14
An: '[EMAIL PROTECTED]'
Betreff: (ROSE) Composition aggregation
Hi all,
I have Two classes : class "A" and class "B".
There is a Composition relationship between them. Class "A" is the whole
and
class "B" is part of A.
Which one of the following is true?
1- An instance of class "A" contains an instance of class "B" by reference.
2- An instance of class "A" contains an instance of class "B" by value.
regards
Bin/
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