org.tikv.common.predicates

类 SelectivityCalculator

java.lang.Object

org.tikv.common.expression.Visitor<R,C>

org.tikv.common.expression.visitor.DefaultVisitor<Double,Void>

org.tikv.common.predicates.SelectivityCalculator

public class SelectivityCalculator
extends DefaultVisitor<Double,Void>

构造器概要

构造器

构造器和说明
SelectivityCalculator()

方法概要

限定符和类型	方法和说明
static double	calcPseudoSelectivity(ScanSpec spec)
protected Double	process(Expression node, Void context)

从类继承的方法 org.tikv.common.expression.visitor.DefaultVisitor

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

SelectivityCalculator

public SelectivityCalculator()

方法详细资料

calcPseudoSelectivity

public static double calcPseudoSelectivity(ScanSpec spec)

process

protected Double process(Expression node,
                         Void context)

覆盖:

process 在类中 DefaultVisitor<Double,Void>