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design pattern question

imran quazi
Greenhorn

Joined: Dec 01, 2006
Posts: 18
A scenario occurred like this:
3 classes: Bat, Eat, Fat. When Bat is instantiated only Bat related methods are called. When Eat is instantiated Eat+ Bat related methods are called. When Fat is instantiated Fat+Eat+Bat (means all) methods are called.

Bat & Eat are language specific & there are nine languages. So, nine Bat & nine Eat. But, Fat is not language specific, there's only one Fat. Now, the question is how it can be designed so that when suppose french is passed as language parameter Bat_fr+Eat_fr+Fat specific methods will be called.

I thought of making Bat as interface which will be extended by Eat interface & which will be implemented by Fat. Don't know if it is ok.

Kindly guide me.

Regards,
Imran
marc weber
Sheriff

Joined: Aug 31, 2004
Posts: 11343

Originally posted by imran quazi:
...the question is how it can be designed so that when suppose french is passed as language parameter Bat_fr+Eat_fr+Fat specific methods will be called...

Have you looked at the strategy pattern?


"We're kind of on the level of crossword puzzle writers... And no one ever goes to them and gives them an award." ~Joe Strummer
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imran quazi
Greenhorn

Joined: Dec 01, 2006
Posts: 18
Thanks,

I used strategy pattern and its working nicely.
 
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subject: design pattern question