Class: MuchResult::Transaction

Inherits:
Object
  • Object
show all
Defined in:
lib/much-result/transaction.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(receiver, **result_kargs) ⇒ Transaction

Returns a new instance of Transaction.

Raises:

  • (ArgumentError) 


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# File 'lib/much-result/transaction.rb', line 16

def initialize(receiver, **result_kargs)
  raise(ArgumentError, "`receiver` can't be nil.") if receiver.nil?

  @receiver = receiver
  @result_kargs = result_kargs

  result.much_result_transaction_rolled_back = false
  result.much_result_transaction_halted = false
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object (private) 



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# File 'lib/much-result/transaction.rb', line 58

def method_missing(method, *args, &block)
  result.public_send(method, *args, &block)
end

Class Method Details

.call(receiver, **result_kargs, &block) ⇒ Object 



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# File 'lib/much-result/transaction.rb', line 12

def self.call(receiver, **result_kargs, &block)
  new(receiver, **result_kargs).call(&block)
end

.halt_throw_value ⇒ Object 



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# File 'lib/much-result/transaction.rb', line 8

def self.halt_throw_value
  :muchresult_transaction_halt
end

Instance Method Details

#call(&block) ⇒ Object 



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# File 'lib/much-result/transaction.rb', line 30

def call(&block)
  begin
    @receiver.transaction do
      catch(self.class.halt_throw_value){ block.call(self) }
    end
  rescue MuchResult::Rollback
    # do nothing
  end

  result
end

#halt ⇒ Object 



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# File 'lib/much-result/transaction.rb', line 47

def halt
  result.much_result_transaction_halted = true
  throw(self.class.halt_throw_value)
end

#result ⇒ Object 



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# File 'lib/much-result/transaction.rb', line 26

def result
  @result ||= MuchResult.success(**@result_kargs)
end

#rollback ⇒ Object

Raises:



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# File 'lib/much-result/transaction.rb', line 42

def rollback
  result.much_result_transaction_rolled_back = true
  raise MuchResult::Rollback
end