Class JoinPlanOptimizerBase

java.lang.Object

se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.simple.JoinPlanOptimizerBase

All Implemented Interfaces:

JoinPlanOptimizer

Direct Known Subclasses:

CardinalityBasedGreedyJoinPlanOptimizerImpl, CostModelBasedGreedyJoinPlanOptimizerImpl, DPBasedJoinPlanOptimizer

public abstract class JoinPlanOptimizerBase
extends Object
implements JoinPlanOptimizer

An abstract base class for implementations of JoinPlanOptimizer.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static interface	JoinPlanOptimizerBase.EnumerationAlgorithm

Constructor Summary

Constructors

Constructor	Description
JoinPlanOptimizerBase()

Method Summary

Modifier and Type	Method	Description
final PhysicalPlan	determineJoinPlan(List<PhysicalPlan> subplans)	Returns a plan that combines the given subplans using binary joins.
protected abstract JoinPlanOptimizerBase.EnumerationAlgorithm	initializeEnumerationAlgorithm(List<PhysicalPlan> subplans)

Methods inherited from class java.lang.Object

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

Methods inherited from interface se.liu.ida.hefquin.engine.queryproc.impl.poptimizer.simple.JoinPlanOptimizer

determineJoinPlan

Constructor Details

JoinPlanOptimizerBase

public JoinPlanOptimizerBase()

Method Details

determineJoinPlan

public final PhysicalPlan determineJoinPlan(List<PhysicalPlan> subplans)
                                     throws PhysicalOptimizationException

Description copied from interface: JoinPlanOptimizer

Returns a plan that combines the given subplans using binary joins.

Specified by:

determineJoinPlan in interface JoinPlanOptimizer

Throws:

PhysicalOptimizationException

initializeEnumerationAlgorithm

protected abstract JoinPlanOptimizerBase.EnumerationAlgorithm initializeEnumerationAlgorithm(List<PhysicalPlan> subplans)