Is there a better way than a sequence of if's to handle events?
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by Matt
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Published on 2010-03-30T02:44:21Z
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2010/03/30
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I recently ran across several objects implemented to handle events with a hard coded mapping using this pattern:
public void handleEvent(Event event)
{
if(event.getCode() == SOME_STATIC_EVENT)
doSomething(event);
if(event.getCode() == ANOTHER_STATIC_EVENT)
doSomethingElse(event);
}
where doSomething functions are implemented as methods of the same class.
In hopes of striving for looser coupling, how would you suggest abstracting out this pattern? Also, what's the best approach for mapping 0..N functions to a fired event?
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