# File app/models/categorization.rb, line 3
 3:   def add_category_to_object(category, object)
 4:     if !find(:first, :conditions => {object_id_column => object, :category_id => category} )
 5:       connection.execute("insert into #{table_name} (category_id, #{object_id_column}) values(#{category.id}, #{object.id})")
 6: 
 7:       c = category.parent
 8:       while !c.nil? && !self.find(:first, :conditions => {object_id_column => object, :category_id => c})
 9:         connection.execute("insert into #{table_name} (category_id, #{object_id_column}, virtual) values(#{c.id}, #{object.id}, 1>0)")
10:         c = c.parent
11:       end
12:     else
13:       connection.execute "update #{table_name} set virtual = (1!=1) where #{object_id_column} = #{object.id} and category_id = #{category.id}"
14:     end
15:   end

    # File app/models/categorization.rb, line 17
17:   def remove_all_for(object)
18:     self.delete_all(object_id_column => object.id)
19:   end