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Contents
module ActiveFedora
module Delegation # :nodoc:
extend ActiveSupport::Concern
# This module creates compiled delegation methods dynamically at runtime, which makes
# subsequent calls to that method faster by avoiding method_missing. The delegations
# may vary depending on the klass of a relation, so we create a subclass of Relation
# for each different klass, and the delegations are compiled into that subclass only.
BLACKLISTED_ARRAY_METHODS = [
:compact!, :flatten!, :reject!, :reverse!, :rotate!, :map!,
:shuffle!, :slice!, :sort!, :sort_by!, :delete_if,
:keep_if, :pop, :shift, :delete_at, :select!
].to_set
delegate :length, :map, :to_ary, to: :to_a
delegate :any?, :all?, :collect, :include?, to: :each
protected
def array_delegable?(method)
Array.method_defined?(method) && BLACKLISTED_ARRAY_METHODS.exclude?(method)
end
def method_missing(method, *args, &block)
if array_delegable?(method)
self.class.delegate method, to: :to_a
to_a.public_send(method, *args, &block)
else
super
end
end
def respond_to_missing?(method, *args)
array_delegable?(method) || super
end
end
end
Version data entries
23 entries across 23 versions & 1 rubygems