Pay attention mathieu.
Design patterns can be evil too.
You do not really need a Visitor for your application.
Your performance classes are your domain and your seaside components
your UI pointing to
the domain objects.
Why do you need a PerfomanceCollection class?
Why do you want to keep in your dictionary the class of its objects?
See you monday :)
Stef
On 25 mai 06, at 16:22, math wrote:
Subject: Design with Visitor
From: "Mathieu SUEN" <mathk.sue@xxxxxxxxx>
Date: Wed, 24 May 2006 23:14:58 +0200
To: beginners-bounces@xxxxxxxxxxxxxxxxxxxxxxxxxx
Hi squeakers,
I have to build a lite code for home work.
The objective is to gave to user a possibility to store his sport
performance.
So I have design a Class Performance(with PerformanceCollection)
and I
wanted to let things like TimeLaps, Date, Distance, and so on.
for a later implementation (if we wanted to add others).
So I provide a Measure abstract class.
Hence I add a dictionary in my Performance with the class for key and
the instance for value:
for example:
Performance>>addMeasure: aMeasure
dictionaryOfMesure at: aMeasure class put: aMeasure
Now I have to bring them in a Seaside UI so I guess that Visitor
Pattern
( ;-) ) can help me but my complex structure mess my brain.
So I ask you if you think that can be possible(and how) or other
pattern
can be more suitable for this problem.
Thank you for your attention (:
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Thinking forward I see that 2 Performance instance couldn't be compare
so befor asking how to print them I will think about a other
structure.
I think I will use Builder or Factory Method pattern.
Thanks
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