Class: ComposableOperations::ComposedOperation

Inherits:
Operation
  • Object
show all
Defined in:
lib/composable_operations/composed_operation.rb

Instance Attribute Summary

Attributes inherited from Operation

#backtrace, #input, #message, #result

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Operation

exception, #failed?, finalizers, #halted?, #initialize, #message?, #name, perform, #perform, preparators, #succeeded?

Constructor Details

This class inherits a constructor from ComposableOperations::Operation

Class Method Details

.compose(*operations, &block) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/composable_operations/composed_operation.rb', line 13

def compose(*operations, &block)
  raise ArgumentError, "Expects either an array of operations or a block with configuration instructions" unless !!block ^ !operations.empty?

  if block
    Class.new(self, &block)
  else
    Class.new(self) do
      operations.each do |operation|
        use operation
      end
    end
  end
end

.operations ⇒ Object 



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# File 'lib/composable_operations/composed_operation.rb', line 5

def operations
  [] + Array((super if defined? super)) + Array(@operations)
end

.transitions ⇒ Object 



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# File 'lib/composable_operations/composed_operation.rb', line 27

def transitions
  transitions = []
  klass = self
  while klass != Operation
    klass = klass.superclass
    transitions += Array(klass.instance_variable_get(:@transitions))
  end
  transitions += Array(@transitions)
  transitions
end

.use(operation) ⇒ Object 



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# File 'lib/composable_operations/composed_operation.rb', line 9

def use(operation)
  (@operations ||= []) << operation
end

Instance Method Details

#operations ⇒ Object 



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# File 'lib/composable_operations/composed_operation.rb', line 47

def operations
  self.class.operations
end