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Re: Modules in Objective-C like e.g. OSGi-Bundles in Java
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Re: Modules in Objective-C like e.g. OSGi-Bundles in Java

  • Subject: Re: Modules in Objective-C like e.g. OSGi-Bundles in Java
  • From: Jonathan deWerd <email@hidden>
  • Date: Thu, 7 Aug 2008 17:56:15 -0600
On Aug 7, 2008, at 5:31 PM, Lars Sonchocky-Helldorf wrote:


Am 07.08.2008 um 21:45 schrieb Matthias Luebken:

Hi

I'm new to Cocoa and Objective-C. Please point me to a different group
/ forum if this mailing-list isn't appropriate.

I have a fairly basic language question: Is there a module concept in
Objective-C / Cocoa? I'm thinking in terms of OSGi bundles[0]. What
would I do if I would like to encapsulate a certain functionality that
consists of several classes? Could I define an API how to use this
module and make sure private classes of this module aren't visible to
the outside?

Thanks in advance.
Looking forward to learn Obj-C and Cocoa
Matthias

[0] http://www.osgi.org/About/Technology#Framework 

see:

http://www.google.com/search?ie=utf8&oe=utf8&q=NSBundle

first hit (and links therein)



regards,

Lars

I'm not sure if this is what he was asking for – NSBundle doesn't offer the level of encapsulation that OSGi would. All classes are still loaded into the flat namespace, and every function and byte of memory in the process that loads the bundle is available for the bundle's code to access. The only way I am aware of to get "private" functionality would be to prefix each classname with something unique like the reverse DNS system that's so popular with the kernel programmers.

Unless there is a way to automatically isolate loaded classes... I'd love to hear it. Magic dyld options are useful to know about :)



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