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@@ -18,8 +18,8 @@ module Dependencies
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       loaded << file_name
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       begin
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         require_or_load(file_name)
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-      rescue LoadError
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-        raise unless swallow_load_errors
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+      rescue Object => e
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+        raise ScriptError, "#{e.message}" unless e.is_a?(LoadError) && swallow_load_errors
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       end
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     end
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   end
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@@ -32,18 +32,8 @@ module Dependencies
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     self.loaded = [ ]
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   end
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-  def reload
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-    loaded.each do |file_name| 
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-      begin
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-        silence_warnings { load("#{file_name}.rb") }
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-      rescue LoadError
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-        # We don't care if the file was removed now
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-      end
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-    end
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-  end
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-  
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   def require_or_load(file_name)
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-    mechanism == :load ? silence_warnings { load("#{file_name}.rb") } : require(file_name)
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+    load? ? load("#{file_name}.rb") : require(file_name)
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   end
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 end
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@@ -57,7 +47,7 @@ class Object #:nodoc:
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     # require_association when using single-table inheritance.
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     def const_missing(class_id)
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       begin
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-        require_dependency(Inflector.underscore(Inflector.demodulize(class_id.to_s)))
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+        require_or_load(class_id.to_s.demodulize.underscore)
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         if Object.const_defined?(class_id) then return Object.const_get(class_id) else raise LoadError end
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       rescue LoadError
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         raise NameError, "uninitialized constant #{class_id}"

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@@ -34,8 +34,6 @@ class Dispatcher
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         controller_name, module_name = controller_name(request.parameters), module_name(request.parameters)
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-        reload_models
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-
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         require_or_load("application")
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         require_or_load(controller_path(controller_name, module_name))
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@@ -43,23 +41,17 @@ class Dispatcher
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       rescue Object => exception
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         ActionController::Base.process_with_exception(request, response, exception).out
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       ensure
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-        remove_controllers(controller_name)
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+        reset_application if Dependencies.load?
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         Breakpoint.deactivate_drb if defined?(BREAKPOINT_SERVER_PORT)
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       end
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     end
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     private
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-      def reload_models
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-        if Dependencies.load?
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-          ActiveRecord::Base.reset_column_information_and_inheritable_attributes_for_all_subclasses
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-          Dependencies.reload
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-        end
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-      end
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-      
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-      def remove_controllers(controller_name)
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-        if Dependencies.load? && defined?(ApplicationController)
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-          remove_class_hierarchy(controller_class(controller_name), ActionController::Base)
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-        end
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+      def reset_application
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+        Dependencies.clear
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+        ActiveRecord::Base.remove_subclasses
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+        ActiveRecord::Observer.remove_subclasses
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+        ActionController::Base.remove_subclasses
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       end
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       def controller_path(controller_name, module_name = nil)
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@@ -85,12 +77,5 @@ class Dispatcher
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       def module_name(parameters)
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         parameters["module"].downcase.gsub(/[^_a-zA-Z0-9]/, "").untaint if parameters["module"]
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       end
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-
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-      def remove_class_hierarchy(klass, until_superclass)
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-        while klass
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-          Object.send(:remove_const, "#{klass}".intern)
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-          klass = (klass.superclass unless until_superclass == klass.superclass)
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-        end
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-      end
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   end
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 end
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\ No newline at end of file