class Bullet::Detector::UnusedEagerAssociation

def self.call_object_association( object, association )

def self.call_object_association( object, association )
  eager_loadings.similarly_associated( object, association ).
                 collect { |related_object| call_object_associations[related_object] }.
                 compact.
                 flatten.
                 uniq
end

def self.check_unused_preload_associations

if association not in call_object_association, then the object => association - call_object_association is ununsed preload assocations
get call_object_association from associations of call_object_associations whose object is in related_objects
get related_objects from eager_loadings associated with object and associations
for each object => association
check if there are unused preload associations.

def self.check_unused_preload_associations
  @@checked = true
  object_associations.each do |object, association|
    object_association_diff = diff_object_association object, association
    next if object_association_diff.empty?
    create_notification object.class, object_association_diff
  end
end

def self.create_notification(klazz, associations)

def self.create_notification(klazz, associations)
  notice = Bullet::Notification::UnusedEagerLoading.new( klazz, associations )
  Bullet.notification_collector.add( notice )
end

def self.diff_object_association( object, association )

def self.diff_object_association( object, association )
  potential_objects = association - call_object_association( object, association )
  potential_objects.reject {|a| a.is_a?( Hash ) }
end