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module ActiveRecord
module Type
class HashLookupTypeMap < TypeMap # :nodoc:
def initialize
@cache = {}
super
end
delegate :key?, to: :@mapping
def lookup(type, *args)
@mapping.fetch(type, proc { default_value }).call(type, *args)
end
def fetch(type, *args, &block)
cache = (@cache[type] ||= {})
resolved = cache[args]
unless resolved
resolved = cache[args] = @mapping.fetch(type, block).call(type, *args)
end
resolved
end
def alias_type(type, alias_type)
register_type(type) { |_, *args| lookup(alias_type, *args) }
end
def register_type(key, value=nil, &block)
@cache = {}
super(key, value, &block)
end
end
end
end
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