Package se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.costmodel

Class CostModelImpl

java.lang.Object

se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.costmodel.CostModelImpl

All Implemented Interfaces:

CostModel

public class CostModelImpl
extends Object
implements CostModel

Field Summary

Fields

Modifier and Type	Field	Description
protected final Map<PhysicalPlan,CompletableFuture<Double>>	cache
protected final CostDimension[]	dimensions

Constructor Summary

Constructors

Constructor	Description
CostModelImpl(CardinalityEstimation cardEstimation)
CostModelImpl(CostDimension[] dimensions)

Method Summary

Modifier and Type	Method	Description
protected CompletableFuture<Double>	_initiateCostEstimation(PhysicalPlan plan)
static CostDimension[]	getDefaultDimensions(CardinalityEstimation cardEstimation)
CompletableFuture<Double>	initiateCostEstimation(PhysicalPlan plan)

Methods inherited from class java.lang.Object

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

Field Details

dimensions

protected final CostDimension[] dimensions

cache

protected final Map<PhysicalPlan,CompletableFuture<Double>> cache

Constructor Details

CostModelImpl

public CostModelImpl(CostDimension[] dimensions)

CostModelImpl

public CostModelImpl(CardinalityEstimation cardEstimation)

Method Details

getDefaultDimensions

public static CostDimension[] getDefaultDimensions(CardinalityEstimation cardEstimation)

initiateCostEstimation

public CompletableFuture<Double> initiateCostEstimation(PhysicalPlan plan)

Specified by:

initiateCostEstimation in interface CostModel

_initiateCostEstimation

protected CompletableFuture<Double> _initiateCostEstimation(PhysicalPlan plan)