Re: refreshRefetchedObjects

Hey Ramsey and friends,

If you were studying numerical data, you wouldn't expect that by  
hitting the browser refresh button on your browser that the data  
spread would look different. That's just one example. That would mess  
up your standard deviation calculation. What the ?!? I could have  
sworn that value was 20 not 28 a second ago.

Yes, you are right, it would seem silly to most people that if you  
spent the time to hit the database, you might as well show the results  
of that fetch. But, that is not what NeXT designers wanted as a  
default. They understood that many people would want that so gave you  
the boolean flag... If I had to guess, they wanted to flex their  
mental muscles and make a point about how the EOEditingContext is a  
"consistent view" of your data. As long as you are working with the  
data there shouldn't be surprises from other people using the system.  
I believe that was their mantra.

Other people have had a similar beef with  
"addObjectToBothSidesOfRelationshipWithKey()." They ask "When would  
you not want to do that?" 9 times out of ten you always want to and in  
Cayanne that is the default. But in WO we can add to just one side.  
Why? Because there might be a painful back relationship you don't feel  
like tripping. You could argue to remove the back relationship from  
the model... but if that wasn't up to you, and you didn't want the  
performance penalty, you can simply add the to-one side of the  
relationship and not both sides.

I have a bigger beef with the wocomponent only known its parent. I  
feel it should know its children instead. Why does the tire need to  
know the car it is on? It should just know how to spin and chirp when  
tire pressure is low. The car should be the one to know what tires it  
has.

Much of this is "that just the way it is" and we may never know the  
true reasons. At least most of the time the NeXT guys gave us hooks to  
do what we want, that's great. They preach but then let us do what we  
want anyway.
AARON ROSENZWEIG / Chat 'n Bike
e:  [email protected]  t:  (301) 956-2319 	
	

On Mar 8, 2013, at 7:11 PM, Ramsey Gurley wrote:

> The default for refreshesRefetchedObjects is false. Why? That's what  
> doesn't make any sense to me.  When is that behavior ever desirable?

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