public class PseudoCostCalculator extends DefaultVisitor<Double,Void>
| 构造器和说明 |
|---|
PseudoCostCalculator() |
| 限定符和类型 | 方法和说明 |
|---|---|
static double |
calculateCost(Expression expr) |
protected Double |
process(Expression node,
Void context) |
protected Double |
visit(ComparisonBinaryExpression node,
Void context) |
protected Double |
visit(LogicalBinaryExpression node,
Void context) |
public static double calculateCost(Expression expr)
protected Double process(Expression node, Void context)
process 在类中 DefaultVisitor<Double,Void>protected Double visit(LogicalBinaryExpression node, Void context)
visit 在类中 DefaultVisitor<Double,Void>protected Double visit(ComparisonBinaryExpression node, Void context)
visit 在类中 DefaultVisitor<Double,Void>Copyright © 2023 PingCAP. All rights reserved.