Class: Veritas::Optimizer::Algebra::Restriction::UnoptimizedOperand

Inherits:
Veritas::Optimizer::Algebra::Restriction show all
Includes:
Function::Unary::UnoptimizedOperand
Defined in:
lib/veritas/optimizer/algebra/restriction.rb

Overview

Optimize when operand is optimizable

Constant Summary

Constants inherited from Veritas::Optimizer

Noop, VERSION

Instance Attribute Summary

Attributes inherited from Veritas::Optimizer::Algebra::Restriction

#predicate

Attributes inherited from Relation::Operation::Unary

#header

Attributes included from Function::Unary

#operand

Attributes inherited from Veritas::Optimizer

#operation

Instance Method Summary collapse

Methods inherited from Veritas::Optimizer::Algebra::Restriction

#initialize

Methods inherited from Relation::Operation::Unary

#initialize

Methods included from Function::Unary

#initialize

Methods inherited from Veritas::Optimizer

chain, #initialize

Constructor Details

This class inherits a constructor from Veritas::Optimizer::Algebra::Restriction

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 operand is unoptimized

Returns:

  • (Boolean) 


344
345
346
 
# File 'lib/veritas/optimizer/algebra/restriction.rb', line 344

def optimizable?
  super || ! predicate.equal?(operation.predicate)
end

#optimize ⇒ Rename

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.

Return a Restriction with an optimized operand

Returns:



353
354
355
 
# File 'lib/veritas/optimizer/algebra/restriction.rb', line 353

def optimize
  wrap_operand(operand)
end