Interface JoinFactorCostModel

public interface JoinFactorCostModel

Optional SPI for join-factor work estimates under a concrete prefix binding set.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static final class	JoinFactorCostModel.CostContext
static final class	JoinFactorCostModel.FactorCostEstimate

Method Summary

Modifier and Type	Method	Description
Optional<JoinFactorCostModel.FactorCostEstimate>	estimateFactorCost(TupleExpr factor, Set<String> currentlyBoundVars)
default Optional<JoinFactorCostModel.FactorCostEstimate>	estimateFactorCost(TupleExpr factor, JoinFactorCostModel.CostContext context)

Method Details

estimateFactorCost

Optional<JoinFactorCostModel.FactorCostEstimate> estimateFactorCost(TupleExpr factor,
 Set<String> currentlyBoundVars)

estimateFactorCost

default Optional<JoinFactorCostModel.FactorCostEstimate> estimateFactorCost(TupleExpr factor,
 JoinFactorCostModel.CostContext context)