[cgiapp] CAP Application Design suggestion

[Giannis Economou <suppressed>]

Hi...

I came up with the a specific design about an application I'm writing 
using CGI::Application. Here is an example:

MyBaseApp    is-a         CGI:App
MyApp            is-a         MyBaseApp
Cars                is-a          MyApp
Airplanes         is-a          MyApp

Both Cars and Airplanes implement a runmode named: 'registration'

I want to be able to call the right 'registration' runmode, according to 
one query param (for example, 'type') that user requests. Example the 
"http://www.example.com/app.pl?rm=registration&type=car"; to be handled 
by the Cars 'registration' runmode.

I thought to do that in app.pl script (the instantiation script):
1. Use plain CGI to check for the 'type' query parameter
2. Do a simple dispatch like:
  my $app = undef;
  $app = Cars->new() if $type eq "car";
  $app = Planes->new() if $type eq "planes";
  $app->run();

I'm wondering if they are better ways to do the above (maybe inside a 
CAP, without using the plain CGI for checking the 'type' param).
Any suggestions or ideas (always for a persistent environment like 
mod_perl) are welcome...

Regards,
Giannis


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