class Axiom::Optimizer::Algebra::Rename::RestrictionOperand
Optimize when the operand is a Restriction
Public Instance Methods
optimizable?()
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Test if the operand is a Restriction
@return [Boolean]
@api private
# File lib/axiom/optimizer/algebra/rename.rb, line 160 def optimizable? operand.kind_of?(Axiom::Algebra::Restriction) end
optimize()
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Wrap the Rename
in a Restriction
@return [Restriction]
@api private
# File lib/axiom/optimizer/algebra/rename.rb, line 169 def optimize wrap_operand.restrict(rename_predicate) end
Private Instance Methods
rename_predicate()
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Rename
the operand predicate
@return [Function]
@api private
# File lib/axiom/optimizer/algebra/rename.rb, line 180 def rename_predicate operand.predicate.rename(aliases) end