org.apache.calcite.plan.volcano

Class VolcanoCost.Factory

java.lang.Object

org.apache.calcite.plan.volcano.VolcanoCost.Factory

All Implemented Interfaces:

RelOptCostFactory

Enclosing class:

VolcanoCost

private static class VolcanoCost.Factory
extends java.lang.Object
implements RelOptCostFactory

Implementation of RelOptCostFactory that creates VolcanoCosts.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Factory()

Method Summary

Modifier and Type	Method and Description
RelOptCost	makeCost(double dRows, double dCpu, double dIo) Creates a cost object.
RelOptCost	makeHugeCost() Creates a cost object representing an enormous non-infinite cost.
RelOptCost	makeInfiniteCost() Creates a cost object representing infinite cost.
RelOptCost	makeTinyCost() Creates a cost object representing a small positive cost.
RelOptCost	makeZeroCost() Creates a cost object representing zero cost.

Methods inherited from class java.lang.Object

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

Constructor Detail

Factory

private Factory()

Method Detail

makeCost

public RelOptCost makeCost(double dRows,
                           double dCpu,
                           double dIo)

Description copied from interface: RelOptCostFactory

Creates a cost object.

Specified by:

makeCost in interface RelOptCostFactory

makeHugeCost

public RelOptCost makeHugeCost()

Description copied from interface: RelOptCostFactory

Creates a cost object representing an enormous non-infinite cost.

Specified by:

makeHugeCost in interface RelOptCostFactory

makeInfiniteCost

public RelOptCost makeInfiniteCost()

Description copied from interface: RelOptCostFactory

Creates a cost object representing infinite cost.

Specified by:

makeInfiniteCost in interface RelOptCostFactory

makeTinyCost

public RelOptCost makeTinyCost()

Description copied from interface: RelOptCostFactory

Creates a cost object representing a small positive cost.

Specified by:

makeTinyCost in interface RelOptCostFactory

makeZeroCost

public RelOptCost makeZeroCost()

Description copied from interface: RelOptCostFactory

Creates a cost object representing zero cost.

Specified by:

makeZeroCost in interface RelOptCostFactory