Module: EntityProjection::ApplyMacro

Defined in:
lib/entity_projection/entity_projection.rb

Defined Under Namespace

Classes: Error

Instance Method Summary collapse

Instance Method Details

#apply_macro(event_class, &blk) ⇒ Object Also known as: apply 



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# File 'lib/entity_projection/entity_projection.rb', line 69

def apply_macro(event_class, &blk)
  define_apply_method(event_class, &blk)
  event_registry.register(event_class)
end

#define_apply_method(event_class, &blk) ⇒ Object 



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# File 'lib/entity_projection/entity_projection.rb', line 75

def define_apply_method(event_class, &blk)
  apply_method_name = handler_name(event_class)

  if blk.nil?
    error_msg = "Handler for #{event_class.name} is not correctly defined. It must have a block."
    logger.error { error_msg }
    raise Error, error_msg
  end

  send(:define_method, apply_method_name, &blk)

  apply_method = instance_method(apply_method_name)

  unless apply_method.arity == 1
    error_msg = "Handler for #{event_class.name} is not correctly defined. It can only have a single parameter."
    logger.error { error_msg }
    raise Error, error_msg
  end

  apply_method_name
end

#logger ⇒ Object 



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# File 'lib/entity_projection/entity_projection.rb', line 65

def logger
  @logger ||= Log.get(self)
end