lib/veritas/optimizer/algebra/product.rb in veritas-0.0.1 vs lib/veritas/optimizer/algebra/product.rb in veritas-0.0.2

@@ -1,11 +1,11 @@
 module Veritas
   class Optimizer
     module Algebra
 
       # Abstract base class representing Product optimizations
-      class Product < Relation::Operation::Combine
+      class Product < Relation::Operation::Combination
 
         # Optimize when left operand is a TABLE DEE
         class TableDeeLeft < self
 
           # Test if the left operand is a TABLE DEE
@@ -16,11 +16,11 @@
           def optimizable?
             left = self.left
             left.header.empty? && !left.kind_of?(Veritas::Relation::Empty)
           end
 
-          # A Product wih a left TABLE DEE is equivalent to the right operand
+          # A Product with a left TABLE DEE is equivalent to the right operand
           #
           # @return [Relation]
           #
           # @api private
           def optimize
@@ -40,10 +40,10 @@
           def optimizable?
             right = self.right
             right.header.empty? && !right.kind_of?(Veritas::Relation::Empty)
           end
 
-          # A Product wih a right TABLE DEE is equivalent to the left operand
+          # A Product with a right TABLE DEE is equivalent to the left operand
           #
           # @return [Relation]
           #
           # @api private
           def optimize