Class: Yaoc::TransformationCommand

Inherits:
Object
  • Object
show all
Defined in:
lib/yaoc/transformation_command.rb

Direct Known Subclasses

TransformationDeferredCommand

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(to: nil, from: nil, fetch_method: nil, conversion_proc: nil, fetcher_proc: nil) ⇒ TransformationCommand

Returns a new instance of TransformationCommand.



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# File 'lib/yaoc/transformation_command.rb', line 30

def initialize(to: nil, from: nil, fetch_method: nil, conversion_proc: nil, fetcher_proc: nil)
  self.to = to
  self.from = from
  self.proc = conversion_proc
  self.fetcher = fetch_method
  self.value_fetcher_proc = fetcher_proc || ->(to_convert, fetcher, from){ to_convert.public_send(fetcher, from)}
end

Class Method Details

.create(to: nil, from: nil, deferred: false, conversion_proc: nil, fetcher_proc: nil) ⇒ Object 



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# File 'lib/yaoc/transformation_command.rb', line 17

def self.create(to: nil, from: nil, deferred: false, conversion_proc: nil, fetcher_proc: nil)
  # will be executed in mapper object instance context later through :define_method
  tc_source = deferred ? deferred_source : default_source

  -> (to_convert, result){
    tc_source.new(to: to, from: from, fetch_method: fetcher, conversion_proc: conversion_proc, fetcher_proc: fetcher_proc).call(to_convert, result)
  }
end

.default_source ⇒ Object 



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# File 'lib/yaoc/transformation_command.rb', line 13

def self.default_source
  TransformationCommand
end

.deferred_source ⇒ Object 



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# File 'lib/yaoc/transformation_command.rb', line 9

def self.deferred_source
  TransformationDeferredCommand
end

.fill_result_with_value(result, key, value) ⇒ Object 



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# File 'lib/yaoc/transformation_command.rb', line 26

def self.fill_result_with_value(result, key, value)
  result.tap{|taped_result| taped_result[key] = value}
end

Instance Method Details

#call(to_convert, result) ⇒ Object 



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# File 'lib/yaoc/transformation_command.rb', line 38

def call(to_convert, result)

  unless proc.nil?
    instance_exec(to_convert, result, &proc)
  else
    TransformationCommand.fill_result_with_value(result, to, value(to_convert))
  end

end

#value(to_convert) ⇒ Object 



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# File 'lib/yaoc/transformation_command.rb', line 48

def value(to_convert)
  value_fetcher_proc.call(to_convert, fetcher, from)
end