Class: Gimei::UniqueGenerator

Inherits:
Object
  • Object
show all
Defined in:
lib/gimei/unique_generator.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, max_retries) ⇒ UniqueGenerator

Returns a new instance of UniqueGenerator.



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# File 'lib/gimei/unique_generator.rb', line 11

def initialize(klass, max_retries)
  @klass = klass
  @max_retries = max_retries
end

Class Method Details

.previous_results ⇒ Object 



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# File 'lib/gimei/unique_generator.rb', line 6

def previous_results
  @previous_results ||= Hash.new { |hash, key| hash[key] = Set.new }
end

Instance Method Details

#clear(key = nil) ⇒ Object 



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# File 'lib/gimei/unique_generator.rb', line 20

def clear(key = nil)
  case key
  when :family
    previous_results[:last].clear
  when :given
    previous_results[:first].clear
  when nil
    previous_results.clear
  else
    previous_results[key.to_sym].clear
  end
end

#define_unique_method(method_name, previous_result_key = method_name) ⇒ Object 



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# File 'lib/gimei/unique_generator.rb', line 33

def define_unique_method(method_name, previous_result_key = method_name)
  define_singleton_method method_name do |*args|
    max_retries.times do
      result = klass.public_send(method_name, *args)

      next if previous_results[previous_result_key].include?(result.to_s)

      previous_results[previous_result_key] << result.to_s
      return result
    end

    raise RetryLimitExceeded, "Retry limit exceeded for #{method_name}"
  end
end

#previous_results ⇒ Object 



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# File 'lib/gimei/unique_generator.rb', line 16

def previous_results
  self.class.previous_results
end