Re: Design Pattern for Dynamic Class Loading

From:
mlimber <mlimber@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Tue, 29 Jul 2008 08:10:20 -0700 (PDT)
Message-ID:
<81ddf92e-37f5-4db5-b567-a90bd06c76c7@b1g2000hsg.googlegroups.com>
On Jul 29, 9:54 am, digz <Digvijo...@gmail.com> wrote:

Apologies if this is the wrong group for this question. I want to
design an interface , where for a custom functionality , the client
writes a new class with the function implementation and then puts the
name of the Class as a configuration parameter or something and then
the main program loads the new class like a module and the client can
now write code using the new Functions. I suppose this problem has
been solved before , if so what is the best way to do this .


In addition to what Victor said, you might want to check out object
factories in _Modern C++ Design_ by Alexandrescu. They provide a
mechanism to generate an object from an identifier like an enum, int,
or string.

Here's a preview of the MC++D chapter on the topic (pay to get the
whole thing):

http://safari.informit.com/0201704315/ch08

And here's the latest code from the library that developed out of that
book:

http://loki-lib.sourceforge.net/index.php?n=Pattern.FactoryMethod

Cheers! --M

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