# File activerecord/lib/active_record/store.rb, line 80
def store(store_attribute, options = {})
  serialize store_attribute, IndifferentCoder.new(store_attribute, options[:coder])
  store_accessor(store_attribute, options[:accessors]) if options.has_key? :accessors
end

# File activerecord/lib/active_record/store.rb, line 85
def store_accessor(store_attribute, *keys)
  keys = keys.flatten

  _store_accessors_module.module_eval do
    keys.each do |key|
      define_method("#{key}=") do |value|
        write_store_attribute(store_attribute, key, value)
      end

      define_method(key) do
        read_store_attribute(store_attribute, key)
      end
    end
  end

  # assign new store attribute and create new hash to ensure that each class in the hierarchy
  # has its own hash of stored attributes.
  self.local_stored_attributes ||= {}
  self.local_stored_attributes[store_attribute] ||= []
  self.local_stored_attributes[store_attribute] |= keys
end

# File activerecord/lib/active_record/store.rb, line 115
def stored_attributes
  parent = superclass.respond_to?(:stored_attributes) ? superclass.stored_attributes : {}
  if local_stored_attributes
    parent.merge!(local_stored_attributes) { |k, a, b| a | b }
  end
  parent
end