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module ActiveRecord
module IdentityMap
extend ActiveSupport::Concern
class << self
attr_accessor :repositories
attr_accessor :current_repository_name
attr_accessor :enabled
def current
repositories[current_repository_name] ||= Weakling::WeakHash.new
end
def with_repository(name = :default, &block)
old_repository = self.current_repository_name
self.current_repository_name = name
block.call(current)
ensure
self.current_repository_name = old_repository
end
def without(&block)
old, self.enabled = self.enabled, false
block.call
ensure
self.enabled = old
end
def get(class_name, primary_key)
current[[class_name, primary_key]]
end
def add(record)
current[[record.class.name, record.id]] = record
end
def remove(record)
current.delete([record.class.name, record.id])
end
def clear
current.clear
end
alias enabled? enabled
end
self.repositories ||= Hash.new
self.current_repository_name ||= :default
self.enabled = true
module InstanceMethods
end
module ClassMethods
def identity_map
ActiveRecord::IdentityMap
end
end
end
end
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