Class: Micro::Case::Result

Inherits:
Object
  • Object
show all
Defined in:
lib/micro/case/result.rb,
lib/micro/case/result/wrapper.rb,
lib/micro/case/result/transitions.rb

Defined Under Namespace

Classes: Transitions, Wrapper

Constant Summary collapse

@@transitions_enabled = 
true

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(transitions_mapper = Transitions::MapEverything) ⇒ Result

Returns a new instance of Result.



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# File 'lib/micro/case/result.rb', line 26

def initialize(transitions_mapper = Transitions::MapEverything)
  enable_transitions = @@transitions_enabled

  @__is_unknown = true
  @__accumulated_data = {}
  @__tracked_use_cases = Set.new
  @__accessible_attributes = {}

  @__transitions = enable_transitions ? [] : Kind::Empty::ARRAY
  @__transitions_mapper = transitions_mapper if enable_transitions
end

Instance Attribute Details

#data ⇒ Object (readonly) Also known as: value

Returns the value of attribute data.



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# File 'lib/micro/case/result.rb', line 22

def data
  @data
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/micro/case/result.rb', line 22

def type
  @type
end

#use_case ⇒ Object (readonly)

Returns the value of attribute use_case.



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# File 'lib/micro/case/result.rb', line 22

def use_case
  @use_case
end

Class Method Details

.transitions_enabled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/micro/case/result.rb', line 18

def self.transitions_enabled?
  @@transitions_enabled
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/micro/case/result.rb', line 55

def [](key)
  data[key]
end

#__set__(is_success, data, type, use_case) ⇒ Object

Raises:



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# File 'lib/micro/case/result.rb', line 180

def __set__(is_success, data, type, use_case)
  raise Error::InvalidResultType unless type.is_a?(Symbol)
  raise Error::InvalidUseCase unless use_case.is_a?(::Micro::Case)

  @__success, @type, @use_case = is_success, type, use_case

  @data = FetchData.call(data).freeze

  raise Micro::Case::Error::InvalidResult.new(is_success, type, use_case) unless @data

  @__accumulated_data.merge!(@data)

  use_case_attributes = Utils::Hashes.symbolize_keys(@use_case.attributes)

  unless @__tracked_use_cases.member?(use_case_class = @use_case.class)
    @__tracked_use_cases.add(use_case_class)

    __update_accessible_attributes(use_case_attributes)
  end

  __set_transition(use_case_attributes) unless @__transitions.frozen?

  self
end

#__set_accessible_attributes__(arg) ⇒ Object 



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# File 'lib/micro/case/result.rb', line 205

def __set_accessible_attributes__(arg)
  return arg unless arg.is_a?(Hash)

  attributes = Utils::Hashes.symbolize_keys(arg)

  __update_accessible_attributes(attributes)
  __fetch_accessible_attributes
end

#accessible_attributes ⇒ Object 



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# File 'lib/micro/case/result.rb', line 87

def accessible_attributes
  @__accessible_attributes.keys
end

#failure? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/micro/case/result.rb', line 79

def failure?
  !success?
end

#inspect ⇒ Object 



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# File 'lib/micro/case/result.rb', line 38

def inspect
  pretty_type = @__success ? 'Success' : 'Failure'

  instance_info = '%s (%s) type=:%s data=%s' % [pretty_type, self.class, @type, data]
  transitions_info = ' transitions=%d' % [@__transitions.size] if Micro::Case::Result.transitions_enabled?

  "<#{instance_info}#{transitions_info}>"
end

#key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/micro/case/result.rb', line 63

def key?(key)
  data.key?(key)
end

#on_exception(expected_exception = nil) ⇒ Object 



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# File 'lib/micro/case/result.rb', line 113

def on_exception(expected_exception = nil)
  return self unless __failure_type?(:exception)

  if !expected_exception || (Kind.is(Exception, expected_exception) && data.fetch(:exception).is_a?(expected_exception))
    yield(data, @use_case)
  end

  self
end

#on_failure(expected_type = nil) {|hook_data, @use_case| ... } ⇒ Object

Yields:



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# File 'lib/micro/case/result.rb', line 102

def on_failure(expected_type = nil)
  return self unless __failure_type?(expected_type)

  @__is_unknown = false
  hook_data = expected_type.nil? ? self : data

  yield(hook_data, @use_case)

  self
end

#on_success(expected_type = nil) {|hook_data, @use_case| ... } ⇒ Object

Yields:



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# File 'lib/micro/case/result.rb', line 91

def on_success(expected_type = nil)
  return self unless __success_type?(expected_type)

  @__is_unknown = false
  hook_data = expected_type.nil? ? self : data

  yield(hook_data, @use_case)

  self
end

#on_unknown {|_self, @use_case| ... } ⇒ Object

Yields:

Yield Parameters:



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# File 'lib/micro/case/result.rb', line 123

def on_unknown
  return self unless unknown?

  yield(self, @use_case)

  self
end

#slice(*keys) ⇒ Object 



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# File 'lib/micro/case/result.rb', line 71

def slice(*keys)
  Utils::Hashes.slice(data, keys)
end

#success? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/micro/case/result.rb', line 75

def success?
  @__success
end

#then(use_case = nil, attributes = nil, &block) ⇒ Object 



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# File 'lib/micro/case/result.rb', line 131

def then(use_case = nil, attributes = nil, &block)
  can_yield_self = respond_to?(:yield_self)

  if block
    raise INVALID_INVOCATION_OF_THE_THEN_METHOD if use_case
    raise NotImplementedError if !can_yield_self

    yield_self(&block)
  else
    return yield_self if !use_case && can_yield_self
    return failure? ? self : __call_proc(use_case, 'then(-> {})'.freeze) if use_case.is_a?(Proc)
    return failure? ? self : __call_method(use_case, attributes) if use_case.is_a?(Method)

    raise INVALID_INVOCATION_OF_THE_THEN_METHOD unless ::Micro.case_or_flow?(use_case)

    return self if failure?

    input = attributes.is_a?(Hash) ? self.data.merge(attributes) : self.data

    if use_case.is_a?(::Micro::Cases::Flow)
      use_case.call!(input: input, result: self)
    else
      use_case.__new__(self, input).__call__
    end
  end
end

#to_ary ⇒ Object 



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# File 'lib/micro/case/result.rb', line 47

def to_ary
  [data, type]
end

#to_sym ⇒ Object 



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# File 'lib/micro/case/result.rb', line 51

def to_sym
  @__success ? :success : :failure
end

#transitions ⇒ Object 



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# File 'lib/micro/case/result.rb', line 169

def transitions
  @__transitions.dup
end

#unknown? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/micro/case/result.rb', line 83

def unknown?
  @__is_unknown
end

#value?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/micro/case/result.rb', line 67

def value?(value)
  data.value?(value)
end

#values_at(*keys) ⇒ Object 



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# File 'lib/micro/case/result.rb', line 59

def values_at(*keys)
  data.values_at(*keys)
end

#|(arg) ⇒ Object

Raises:

  • (INVALID_INVOCATION_OF_THE_THEN_METHOD) 


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# File 'lib/micro/case/result.rb', line 158

def |(arg)
  return self if failure?

  return __call_proc(arg, '| -> {}'.freeze) if arg.is_a?(Proc)
  return __call_method(arg) if arg.is_a?(Method)

  raise INVALID_INVOCATION_OF_THE_THEN_METHOD unless ::Micro.case_or_flow?(arg)

  failure? ? self : arg.__new__(self, data).__call__
end