[Nitro] Patch: Unsuccesful target resolving

[Aleksi Niemela]

When code points to a class that doesn't exist Og ends up looping 
indefinitely.

class User
  property :name, String
#  has_many :preferences, :Preference         # assuming class 
Preference exist this would work
  has_many :preferences, :Preference_typo  # hangs Og
end

Here's a patch. It assumes there wouldn't be more than 10 levels of 
retries (actually I didn't understand for what is the retry for, but 
still the patch worked for me :).

    - Aleksi


$ diff -u relation.rb~ relation.rb
--- relation.rb~        2005-06-13 23:54:27.535000000 +0300
+++ relation.rb 2005-06-19 12:04:11.187500000 +0300
@@ -72,10 +72,15 @@
                        c = "::" + c unless c =~ /::/
                        c.gsub!(/::.*$/, '::')
                        c << target_class.to_s
+                  retries = 0
                        begin
                                klass = constant(c)
                        rescue
                                c = target_class
+                          retries += 1
+                          if retries > 10
+                            raise "Couldn't resolve target: 
#{target_class.to_s} for #{owner_class.name.dup}"
+                          end
                                retry
                        end
                        @options[:target_class] = klass