Aop?

ruby-talk
1

Hi,
Is there an AOP implementation for Ruby?
I have heard that using metaprogramming facilities obviates AOP.
How is it so?
Thanks

2

I will give you a very broad example and you can narrow it from there:

  ObjectSpace.each_object(Class) do |c|
    c.class_eval do
      c.instance_methods(false).each do |m|
        alias_method "_#{m}", m
        define_method(m) do |*args|
          puts "doing #{m}..."
          send("_#{m}",*args)
        end
      end
    end
  end

Note this is untested, and imperfect, but it should give you a good
idea of how Ruby's metaprogramming abilities can be used for AOP.

Some other things that might interest you:

  RCRchive
  http://facets.rubyforge.org (see cut.rb)
  http://aspectr.sourceforge.net/
  Ruminations of a Programmer: Does Ruby need AOP ?

T.

···

On Feb 3, 10:55 pm, mrun...@gmail.com wrote:

Hi,
Is there an AOP implementation for Ruby?
I have heard that using metaprogramming facilities obviates AOP.
How is it so?
Thanks

3

mrunalp@gmail.com schrieb:

Is there an AOP implementation for Ruby?

Have a look at http://rubyforge.org/projects/aspectr/

Regards,
Jan

4

Trans wrote:

  

Hi,
Is there an AOP implementation for Ruby?
I have heard that using metaprogramming facilities obviates AOP.
How is it so?
Thanks
    

For those of us who are lazy or interested in IOC features, there is Copland (http://copland.rubyforge.org/\). It provides support for AOP-like pre- and post- hooks, as well as providing a wealth of other features, such as dependency injection, service factories, and registries which help keep modules of large systems decoupled from each other. I'm still learning about it myself, but it may help you out if you want any of those features in addition to basic AOP.

Hope that helps,
Ronnie Garduño

···

On Feb 3, 10:55 pm, mrun...@gmail.com wrote: