Sha256: 0a9cb95edac32a5132744a3538b7f5ec7b1c3fa1181ce771cbb0ac20c516d5bd
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Size: 1014 Bytes
Versions: 22
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Stored size: 1014 Bytes
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}"
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}"
end
end
class DuplicateImplementationError < StandardError; end
class UnknownImplementationError < StandardError; end
end
end
Version data entries
22 entries across 22 versions & 1 rubygems