Class: ETL::Transform::DefaultTransform

Inherits:
Transform show all
Defined in:
lib/etl/transform/default_transform.rb

Overview

Transform which will replace nil or empty values with a specified value.

Instance Attribute Summary collapse

Attributes inherited from Transform

#configuration, #control, #name

Instance Method Summary collapse

Methods inherited from Transform

benchmarks, transform

Constructor Details

#initialize(control, name, configuration) ⇒ DefaultTransform

Initialize the transform

Configuration options:

  • :default_value: The default value to use if the incoming value is blank



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# File 'lib/etl/transform/default_transform.rb', line 10

def initialize(control, name, configuration)
  super
  @default_value = configuration[:default_value]
end

Instance Attribute Details

#default_value ⇒ Object

Returns the value of attribute default_value.



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# File 'lib/etl/transform/default_transform.rb', line 5

def default_value
  @default_value
end

Instance Method Details

#transform(name, value, row) ⇒ Object

Transform the value



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# File 'lib/etl/transform/default_transform.rb', line 15

def transform(name, value, row)
  value.blank? ? default_value : value
end