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

Class SimulatedAnnealing

java.lang.Object

se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.randomized.RandomizedQueryOptimizerBase

se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.randomized.SimulatedAnnealing

All Implemented Interfaces:

PhysicalOptimizer

public class SimulatedAnnealing
extends RandomizedQueryOptimizerBase

Field Summary

Fields

Modifier and Type	Field	Description
protected final EquilibriumConditionForSimulatedAnnealing	condition

Fields inherited from class se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.randomized.RandomizedQueryOptimizerBase

costModel, l2pConverter, rng, rules

Constructor Summary

Constructors

Constructor	Description
SimulatedAnnealing(EquilibriumConditionForSimulatedAnnealing x, LogicalToPhysicalPlanConverter l2pConverter, CostModel costModel, RuleInstances rewritingRules)

Method Summary

Modifier and Type	Method	Description
boolean	assumesLogicalMultiwayJoins()
protected boolean	isFrozen(double temperature, int unchanged)
Pair<PhysicalPlan,PhysicalOptimizationStats>	optimize(LogicalPlan initialPlan)
Pair<PhysicalPlan,PhysicalOptimizationStats>	optimize(PhysicalPlan initialPlan, int numberOfSubplans)
Pair<PhysicalPlan,PhysicalOptimizationStats>	optimize(PhysicalPlan initialPlan, int numberOfSubplans, double temperatureModifier)

Methods inherited from class se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.randomized.RandomizedQueryOptimizerBase

getNeighbours, getRandomElement

Methods inherited from class java.lang.Object

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

Field Details

condition

protected final EquilibriumConditionForSimulatedAnnealing condition

Constructor Details

SimulatedAnnealing

public SimulatedAnnealing(EquilibriumConditionForSimulatedAnnealing x,
 LogicalToPhysicalPlanConverter l2pConverter,
 CostModel costModel,
 RuleInstances rewritingRules)

Method Details

assumesLogicalMultiwayJoins

public boolean assumesLogicalMultiwayJoins()

optimize

public Pair<PhysicalPlan,PhysicalOptimizationStats> optimize(LogicalPlan initialPlan)
                                                      throws PhysicalOptimizationException

Throws:

PhysicalOptimizationException

optimize

public Pair<PhysicalPlan,PhysicalOptimizationStats> optimize(PhysicalPlan initialPlan,
 int numberOfSubplans)
                                                      throws PhysicalOptimizationException

Throws:

PhysicalOptimizationException

optimize

public Pair<PhysicalPlan,PhysicalOptimizationStats> optimize(PhysicalPlan initialPlan,
 int numberOfSubplans,
 double temperatureModifier)
                                                      throws PhysicalOptimizationException

Throws:

PhysicalOptimizationException

isFrozen

protected boolean isFrozen(double temperature,
 int unchanged)