association_autoreloading.rb in sequel-4.0.0

- old
+ new
@@ -1,53 +1,7 @@
 module Sequel
   module Plugins
-    # The AssociationAutoreloading plugin makes many_to_one association
-    # accessor methods automatically reload the cached object whenever
-    # the association's foreign key is modified:
-    #
-    #     Album.many_to_one :artists
-    #     album = Album.first
-    #     album.artist_id #=> 1
-    #     album.artist # caches associated artist
-    #     album.artist_id = 2
-    #     album.artist # reloads associated artist
-    #
+    # Empty plugin module for backwards compatibility
     module AssociationAutoreloading
-      def self.apply(model)
-        model.instance_variable_set(:@autoreloading_associations, {})
-      end
-
-      module ClassMethods
-        # Hash with column symbol keys and arrays of many_to_one
-        # association symbols that should be cleared when the column
-        # value changes.
-        attr_reader :autoreloading_associations
-
-        Plugins.inherited_instance_variables(self, :@autoreloading_associations=>:hash_dup)
-
-        private
-
-        # Add the association to the array of associations to clear for
-        # each of the foreign key columns.
-        def def_many_to_one(opts)
-          super
-          opts[:keys].each do |key|
-            (@autoreloading_associations[key] ||= []) << opts[:name]
-          end
-        end
-      end
-
-      module InstanceMethods
-        private
-
-        # If a foreign key column value changes, clear the related
-        # cached associations.
-        def change_column_value(column, value)
-          if assocs = model.autoreloading_associations[column]
-            assocs.each{|a| associations.delete(a)}
-          end
-          super
-        end
-      end
     end
   end
 end