DBIC-ResultSet-And-Inheritance is a project mainly written in Perl, it's free.
Code to test the impact of inheritance of a DBIx::Class Result Class on ResultSet Classes
This is an example of inheriting from a DBIx::Class Result Class, and the impacts on the ResultSet Classes from doing so. When the test is run the load_namespaces produces the following message:
DBIx::Class::Schema::load_namespaces(): We found ResultSet class
'Schema::Test:: ResultSet::ProductChild2' for 'ProductChild2', but it seems
that you had already set 'ProductChild2' to use
'Schema::Test::ResultSet::ProductParent' instead at
/Users/mgrimes/src/websites/kci/tmp/dbic-inheritance/lib/Schema/Test.pm
line 7
DBIx::Class::Schema::load_namespaces(): We found ResultSet class
'Schema::Test:: ResultSet::ProductChild' for 'ProductChild', but it seems
that you had already s et 'ProductChild' to use
'Schema::Test::ResultSet::ProductParent' instead at
/Users/mgrimes/src/websites/kci/tmp/dbic-inheritance/lib/Schema/Test.pm
line 7This was tested with: Perl - 5.10.1 DBIx::Class - 0.08127 and 0.08191 Moose - 1.17