Class: Ethel::Operation

Inherits:

Object

• Object
• Ethel::Operation

Defined in:

lib/ethel/operation.rb

Direct Known Subclasses

Ethel::Operations::AddField, Ethel::Operations::Cast, Ethel::Operations::Copy

Instance Method Summary

• #before_transform(source, target) ⇒ Object
• #initialize(*args) ⇒ Operation constructor

  A new instance of Operation.

• #transform(row) ⇒ Object

Constructor Details

#initialize(*args) ⇒ Operation

Returns a new instance of Operation.

# File 'lib/ethel/operation.rb', line 3

def initialize(*args)
  @child_operations = []
end

Instance Method Details

#before_transform(source, target) ⇒ Object

# File 'lib/ethel/operation.rb', line 7

def before_transform(source, target)
  @child_operations.each do |child_operation|
    child_operation.before_transform(source, target)
  end
end

#transform(row) ⇒ Object

# File 'lib/ethel/operation.rb', line 13

def transform(row)
  @child_operations.inject(row) do |row, child_operation|
    child_operation.transform(row)
  end
end