Package tools.refinery.store.query.interpreter.internal.localsearch

Class FlatCostFunction

java.lang.Object

tools.refinery.interpreter.localsearch.planner.cost.impl.StatisticsBasedConstraintCostFunction

tools.refinery.store.query.interpreter.internal.localsearch.FlatCostFunction

All Implemented Interfaces:

ICostFunction

public class FlatCostFunction
extends StatisticsBasedConstraintCostFunction

Field Summary

Fields inherited from class tools.refinery.interpreter.localsearch.planner.cost.impl.StatisticsBasedConstraintCostFunction

DEFAULT_COST, EVAL_UNWIND_EXTENSION_FACTOR, INVERSE_NAVIGATION_PENALTY_DEFAULT, INVERSE_NAVIGATION_PENALTY_GENERIC, MAX_COST

Constructor Summary

Constructors

Constructor	Description
FlatCostFunction()

Method Summary

Modifier and Type	Method	Description
protected double	_calculateCost(TypeConstraint constraint, IConstraintEvaluationContext input)
Optional<Long>	projectionSize(IConstraintEvaluationContext input, IInputKey supplierKey, TupleMask groupMask, Accuracy requiredAccuracy)

Methods inherited from class tools.refinery.interpreter.localsearch.planner.cost.impl.StatisticsBasedConstraintCostFunction

_calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, apply, bucketSize, calculateBinaryCost, calculateBinaryExtendCost, calculateCost, calculateUnaryConstraintCost, countTuples, navigatesThroughFunctionalDependency, navigatesThroughFunctionalDependency, navigatesThroughFunctionalDependencyInverse

Methods inherited from class java.lang.Object

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

Constructor Details

FlatCostFunction

public FlatCostFunction()

Method Details

projectionSize

public Optional<Long> projectionSize(IConstraintEvaluationContext input,
 IInputKey supplierKey,
 TupleMask groupMask,
 Accuracy requiredAccuracy)

Overrides:

projectionSize in class StatisticsBasedConstraintCostFunction

_calculateCost

protected double _calculateCost(TypeConstraint constraint,
 IConstraintEvaluationContext input)

Overrides:

_calculateCost in class StatisticsBasedConstraintCostFunction