Class: Bmg::TupleTransformer

Inherits:
Object
  • Object
show all
Defined in:
lib/bmg/support/tuple_transformer.rb

Constant Summary collapse

Callable = 
->(t) { t.respond_to?(:call) }

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(transformation) ⇒ TupleTransformer

Returns a new instance of TupleTransformer.


6
7
8
 
# File 'lib/bmg/support/tuple_transformer.rb', line 6

def initialize(transformation)
  @transformation = transformation
end

Class Method Details

.new(arg) ⇒ Object 


10
11
12
13
 
# File 'lib/bmg/support/tuple_transformer.rb', line 10

def self.new(arg)
  return arg if arg.is_a?(TupleTransformer)
  super
end

Instance Method Details

#call(tuple) ⇒ Object 


15
16
17
 
# File 'lib/bmg/support/tuple_transformer.rb', line 15

def call(tuple)
  transform_tuple(tuple, @transformation)
end

#knows_attrlist? ⇒ Boolean

Returns:

  • (Boolean) 

19
20
21
 
# File 'lib/bmg/support/tuple_transformer.rb', line 19

def knows_attrlist?
  @transformation.is_a?(Hash)
end

#to_attrlist ⇒ Object 


23
24
25
 
# File 'lib/bmg/support/tuple_transformer.rb', line 23

def to_attrlist
  @transformation.keys
end