org.eclipse.viatra.query.runtime.localsearch.planner.cost.impl

Class IndexerBasedConstraintCostFunction

java.lang.Object

org.eclipse.viatra.query.runtime.localsearch.planner.cost.impl.StatisticsBasedConstraintCostFunction

org.eclipse.viatra.query.runtime.localsearch.planner.cost.impl.IndexerBasedConstraintCostFunction

All Implemented Interfaces:

ICostFunction

Direct Known Subclasses:

HybridMatcherConstraintCostFunction

public class IndexerBasedConstraintCostFunction
extends StatisticsBasedConstraintCostFunction

Cost function which calculates cost based on the cardinality of items in the runtime model, provided by the base indexer

Since:

1.4

Field Summary

Fields inherited from class org.eclipse.viatra.query.runtime.localsearch.planner.cost.impl.StatisticsBasedConstraintCostFunction

DEFAULT_COST, MAX_COST

Constructor Summary

Constructors

Constructor and Description
IndexerBasedConstraintCostFunction()

Method Summary

Modifier and Type	Method and Description
long	countTuples(IConstraintEvaluationContext input, IInputKey supplierKey)

Methods inherited from class org.eclipse.viatra.query.runtime.localsearch.planner.cost.impl.StatisticsBasedConstraintCostFunction

_calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, _calculateCost, apply, calculateBinaryExtendCost, calculateCost, calculateUnaryConstraintCost

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexerBasedConstraintCostFunction

public IndexerBasedConstraintCostFunction()

Method Detail

countTuples

public long countTuples(IConstraintEvaluationContext input,
                        IInputKey supplierKey)

Specified by:

countTuples in class StatisticsBasedConstraintCostFunction