RelOptCostFactory (Apache Calcite API)

public interface RelOptCostFactory

Cost model for query planning.

Method Summary

Modifier and Type

Method

Description

RelOptCost

makeCost(double rowCount, double cpu, double io)

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.

Method Details
- makeCost
  
  RelOptCost makeCost(double rowCount, double cpu, double io)
  
  Creates a cost object.
- makeHugeCost
  
  RelOptCost makeHugeCost()
  
  Creates a cost object representing an enormous non-infinite cost.
- makeInfiniteCost
  
  RelOptCost makeInfiniteCost()
  
  Creates a cost object representing infinite cost.
- makeTinyCost
  
  RelOptCost makeTinyCost()
  
  Creates a cost object representing a small positive cost.
- makeZeroCost
  
  RelOptCost makeZeroCost()
  
  Creates a cost object representing zero cost.