>
> If you want to do something that doesn't break encapsulation, then you
> should simply release the one ivar connection. That will let the receiving
> object perform its own actions, by itself, on its own behalf, as appropriate
> to its own affairs.
Thanks, however, I do not see how to accomplish my purpose. I'm confused.
Help ;)
I have object1 that has a connection to object2, (object1.connection =
object2). And at the same time object2.connection = object1:
O1 -----> O2
O2 -----> O1
If one of these objects gets deallocated how should I make sure the other
object is not pointing to the now deallocated object without doing what I
did:
- (void)dealloc {
if (self.connection) {
self.connection.connection = nil;
}
[super dealloc];
}
Thanks
On Sun, Oct 11, 2009 at 6:11 PM, Greg Guerin <[email protected]> wrote:
> Karolis Ramanauskas wrote:
>
> - (void)dealloc {
>>
>> if (self.connection) {
>>
>> self.connection.connection = nil;
>>
>> }
>>
>> [super dealloc];
>> }
>>
>
>
> Why would you do this? You're making one object responsible for the
> internals of another object. This is a bad idea. It breaks the individual
> encapsulation of each object.
>
> One of the cardinal points of good object-oriented design is that an
> object's responsibilities are circumscribed. It should manage itself and
> the things it directly references, nothing else. For any objects it DOES
> reference, each of those objects also has its own responsibilities, and so
> on recursively. Objects shouldn't poke their noses into another object's
> business.
>
> If you want to do something that doesn't break encapsulation, then you
> should simply release the one ivar connection. That will let the receiving
> object perform its own actions, by itself, on its own behalf, as appropriate
> to its own affairs.
>
> -- GG
>
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