Design Patterns: Do you have a good STRATEGY?

1. Context: Create a XML file. And since there
are many ways: DOM, WAY1, OTHERWAYS, ETC...
2. Question: As a Design Patterns application purpose,
can we use the Strategy Pattern? Is it appropriate one?
If not, what are the alternatives?
CLIENT
--CREATEXML (CONTEXT)
----CREATEXMLSTRATEGY (STRATEGY)
------CREATEXMLSTRATEGY_DOM (CONCRETE STRATEGY)
------CREATEXMLSTRATEGY_WAY1 (CONCRETE STRATEGY)
------CREATEXMLSTRATEGY_OTHERWAYS (CONCRETE STRATEGY)

Hi Paul,
I have myself recently started doing the Design Patterns and believe me after understanding the Patterns OOD have become more clear. >>1. Context: Create a XML file. And since there are many ways: DOM, >>WAY1, OTHERWAYS, ETC...
My understanding regarding the Strategy and Tempelate method Pattern has become stronger after reading the "Thinking in Patterns in Java" , the author is mentioning there these Behavioural Patterns are used for Framework development , infact there he has used example of Framework development.
Now regarding your question it seems to me that your entire applicaiotn can use the Creational Pattern , like Abstract Factory.You can use the DOM,WAY1,OTHERWAYS as the concrete Prodcuts and all will be extracted from the Factory XMLGeneratorFactory.
Strategy Pattern is changing the algorthims at the run time , the temlate can work for your applicaiton but then what you are trying to achieve.Currently this much I can say ..
Let us see for more opinions
Regards
Vicky

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Notes about the block diagram
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Solved!
Go to Solution.
Attachments:
updatedMain.vi ‏13 KB

A couple of thoughts:
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[email protected] wrote:
Actually I am beginner to MVC2 Approach of complex application incorporated by design pattern as Struct,Spring & Hibernate framework.
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>
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Roronoa_Zorro wrote:
Hello , this is my first time posting and I hope to be doing it in the right section. I have a school assignment that says the following: Identify real or abstract structures that could be modeled by the class diagrams represented below: [http://img704.imageshack.us/img704/3523/diagrams.png]
Upon searching I found out that this is a composite design pattern. I have to implement 2 scenarios for this class system. I was thinking of taking class A (from the uploaded image) to be the Software ( more like a program oriented towards a certain domain like multimedia ), B1,B2 could be an Application/Compiler, and the composite class (D) is an Operating System( because is is usually compiled out of many software (program) pieces) . I want to ask for your opinions on this example because I'm not sure whether this is correct or not. If it isn't could you please give me a real-life example of a correct model ?.Unless your assignment specifically required you to use a computer analogy I would use something else, and even then, I'd still use something else first to understand it better.Since OperatingSystem objects aren't composed with other OperatingSystem objects this doesn't really fit the pattern. Now of course you may be able to run several virtual operating systems inside one but that stretches the example too much for my taste. A directory tree may be seen as an example of the composite pattern -- class A can be a Node, different types of files are specializations of a Node (B1, B2, ...) and are not composable (can't put one file inside another), and a Directory (D) is a Composable specialization of a Node -- it can contain other Nodes. [Edit: I see Saish beat me to the file system analogy]
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Maybe we should have a contest here -- who can come up with the most creative real-world analogy to the Composite pattern? I know mine are pretty lame.
Edited by: fromrussiawithjava on Mar 30, 2010 5:36 AM

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Design Patterns: Do you have a good STRATEGY?

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