vishnu.model.algebra.optimizer.costs
Class HashIndexEqualtySelectionCostEstimator

java.lang.Object
  vishnu.model.algebra.optimizer.costs.AbstractCostEstimator
      vishnu.model.algebra.optimizer.costs.HashIndexEqualtySelectionCostEstimator

All Implemented Interfaces:

CostEstimator

public class HashIndexEqualtySelectionCostEstimator
extends AbstractCostEstimator

Constructor Summary

HashIndexEqualtySelectionCostEstimator()

Method Summary

int	clusteredEqualCopyCost()
int	equalCopyCost()
int	inputCost()
int	nonClusteredEqualCopyCost()
int	outputCost()

Methods inherited from class vishnu.model.algebra.optimizer.costs.AbstractCostEstimator

cost, getDatabase, getRelation, image, innerImage, innerPages, log2, max, setDatabase, setRelation

Methods inherited from class java.lang.Object

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

Constructor Detail

HashIndexEqualtySelectionCostEstimator

public HashIndexEqualtySelectionCostEstimator()

Method Detail

inputCost

public int inputCost()

Specified by:

inputCost in class AbstractCostEstimator

equalCopyCost

public int equalCopyCost()

clusteredEqualCopyCost

public int clusteredEqualCopyCost()

nonClusteredEqualCopyCost

public int nonClusteredEqualCopyCost()

outputCost

public int outputCost()

Specified by:

outputCost in class AbstractCostEstimator