Interface CostFunctionForRootOp

All Known Implementing Classes:
CFRBase, CFRNumberOfProcessedSolMaps, CFRNumberOfRequests, CFRNumberOfTermsShippedInRequests, CFRNumberOfTermsShippedInResponses, CFRNumberOfVarsShippedInRequests, CFRNumberOfVarsShippedInResponses
public interface CostFunctionForRootOp
Implementations of this interface represent functions that determine some form of cost value for the root node of any given query plan.