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Friday Oct 07, 2011

Validate Your Patterns ...With Aliens

Developer developer = me;
Alien alien = new UnbiasedAlien();
alien.setContext("Java EE 6"); //or something else
alien.setRequirements("24/7 eCommerce application");

List designIdeas = new ArrayList(){{
	add(new Approach("Service s = new ServiceImpl()"));
	add(new Approach("Empty Delegate"));
	add(new Approach("DAO per entity"));
	add(new Approach("Extensive Layering"));
	add(new Approach("Code Coverage Driven Design"));
	add(new Approach("External libraries and frameworks"));
	//...and whatever is suspicious
}};

for(Approach approach: designIdeas){
	Explanation e = developer.getExplanationFor(approach);
		if(!alien.isExplanationReasonable(e)){
			try{
				developer.pleaseDeleteCodeFor(approach);
			}catch(DeveloperReligiousException e){
				developer.goToVacations();
				alien.deleteCodeFor(e);
		}
	}
}

It is a healthy exercise to iterate over your design ideas / code and try to explain it to someone who is smart but unbiased.
Aliens are perfect for that. Do not throw DeveloperReligiousExceptions--in longer term your superfluous code gets removed anyway :-).

Posted at 06:23PM Oct 07, 2011 by Adam Bien in Real World Java EE Patterns - Rethinking Best Practices | Comments[4] | Views/Hits: 4390

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Comments:

incompatible types required Approach found Object, e is already defined - compilation failed.

Developer dev = WorldsBestDeveloper.getInstance();
Alien alien = new UnbiasedAlien();
try {
dev.tryDoSomethingWith(alien)
} catch (UselessException ex) {
dev.ignore(alien);
alien.goHome(HomeType.UNKNOWN);
} finally {
dev.developsInPeace();
}

mfg :)

Posted by DevInstance on October 14, 2011 at 08:01 PM CEST #

Don't forget:

if (alien instanceof Women)
throw new KernelPanicException();

;-)

I'm just kidding you, Adam!

Best to you,
TC

Posted by TC on November 09, 2011 at 10:58 AM CET #

@Tascha,

I only approved your comment after extensive research - you (http://https://twitter.com/#!/Imifos) look like a Java Girl - so it is o.k. :-)

Thanks!

adam

Posted by Adam Bien on November 10, 2011 at 09:26 AM CET #

senior.say("bla");
aien.say("bla");
projectManager.say("well done");

while(true) {
developer.beginWork();

projectManager.say("bla");
senior.say("bla");
boss.say("bla");
support.say("bla");
tester.say("bla");
ceo.say("bla");
master.say("bla");
obama.say("bla");
// long list of other useless ppl say bla

// not allowed to finish
// developer.endWork();
}

Posted by Horst Mahler on November 26, 2011 at 10:51 PM CET #