module ActiveRecord::Aggregations

def clear_aggregation_cache 

def clear_aggregation_cache
  @aggregation_cache.clear if persisted?
end

def init_internals 

def init_internals
  @aggregation_cache = {}
  super
end

def initialize_dup(*) # :nodoc:

:nodoc: 
def initialize_dup(*) # :nodoc:
  @aggregation_cache = {}
  super
end

def reload(*) # :nodoc:

:nodoc: 
def reload(*) # :nodoc:
  clear_aggregation_cache
  super
end