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Contents
module R10K
# This implements a factory by storing classes indexed with a given key and
# creates objects based on that key.
class KeyedFactory
# @!attribute [r] implementations
# @return [Hash<Object, Class>] A hash of keys and the associated
# implementations that this factory can generate.
attr_reader :implementations
def initialize
@implementations = {}
end
def register(key, klass)
if @implementations.has_key?(key)
raise DuplicateImplementationError, _("Class already registered for %{key}") % {key: key}
else
@implementations[key] = klass
end
end
def retrieve(key)
@implementations[key]
end
def generate(key, *args)
if (impl = @implementations[key])
impl.new(*args)
else
raise UnknownImplementationError, _("No class registered for %{key}") % {key: key}
end
end
class DuplicateImplementationError < StandardError; end
class UnknownImplementationError < StandardError; end
end
end
Version data entries
68 entries across 68 versions & 2 rubygems