Class: PgExport::Transactions::Evaluator

Inherits:
Object
  • Object
show all
Defined in:
lib/pg_export/transactions/evaluator.rb

Instance Method Summary collapse

Constructor Details

#initialize(listeners) ⇒ Evaluator

Returns a new instance of Evaluator.



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# File 'lib/pg_export/transactions/evaluator.rb', line 6

def initialize(listeners)
  @operations = []
  @listeners = listeners
end

Instance Method Details

#<<(operation) ⇒ Object 



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# File 'lib/pg_export/transactions/evaluator.rb', line 11

def <<(operation)
  operations << operation
end

#call(input) ⇒ Object 



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# File 'lib/pg_export/transactions/evaluator.rb', line 15

def call(input)
  result = ValueObjects::Success.new(input)

  operations.each do |operation|
    result = result.bind do
      call_operation(operation, result)
    end
  end

  result
end