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My Problem: I've got several classes, looking a little bit like this:
                     App
                      |
                  App::Basic
                 /         \
App::Basic::Special1     App::Basic::Special2 
     |                        |
     |                        |
     |            My::App     |
     |           /       \    |
My::App::Special1         My::App::Special2
Note that My::App doesn't inherit from App. And note that there are My::OtherApp, Your::App too, looking like My::App and inheriting from App::*

Each of this Classes contains some config values as Class Data.

I want to be able to fetch all those config values, merge them and do something with the result.

E.g.: Say, each class contains an array called @order and a hash called %lables.
@order contains some fields to be displayed
%lables contains the name of those fields as keys and a "human readable" name as values.

@order=(field1,field2,field2,..); %lable={ field1=>"Name of Field 1", field2=>"Name of Field 2", .. );

Each Class now defines some of those values. Some Classes append new values to @order and %lables, some overwrite data in %lables.

There are some basic fields (used everywhere in the app) defined in App::Basic. Each App::Basic::Special1/2 adds some fields unique to this special case.

Now, My::App changes some field lables (e.g. use another language). My::App::Special1 may add even more fields that are only needed in My::App (there might be a My::OtherApp::Special1 that inherits from App::Basic::Special1 and doesn't use this fields)

Then I call dispatch_to_all('get_fields') which fetches all those @field arrays, massage the returned array of all return values to fit my needs, and voila: I get the array of fields used by this Class, without having to specify the "Basic" fields in all Subclasses (which would result in a lot of typing and and even bigger lot of problems should I need to change a App::Basic config value)

This was/is my problem, and that's why I wrote Class::DispatchToAll, which seems the best way to solve this problem to me. But if you now another way, please let me know...

-- #!/usr/bin/perl for(ref bless{},just'another'perl'hacker){s-:+-$"-g&&print$_.$/}

In reply to Re: ?Re: RFC: Class::DispatchToAll by domm
in thread RFC: Class::DispatchToAll by domm

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