Module: Veritas::Optimizer::Relation::Operation::Binary::EmptyLeft

Included in:: Algebra::Difference::EmptyLeft, Algebra::Intersection::EmptyLeft, Algebra::Union::EmptyLeft, Combination::EmptyLeft

Defined in:: lib/veritas/optimizer/relation/operation/binary.rb

Overview

Optimize when the left operand is Empty

Instance Method Summary collapse

#optimizable? ⇒ Boolean private
Test if the left operand is empty.

Instance Method Details

#optimizable? ⇒ `Boolean`

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Test if the left operand is empty



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# File 'lib/veritas/optimizer/relation/operation/binary.rb', line 36

def optimizable?
  left.kind_of?(Veritas::Relation::Empty)
end