Class HeuristicsBasedLogicalOptimizerImpl

java.lang.Object

se.liu.ida.hefquin.engine.queryproc.impl.loptimizer.HeuristicsBasedLogicalOptimizerImpl

All Implemented Interfaces:

LogicalOptimizer

public class HeuristicsBasedLogicalOptimizerImpl
extends Object
implements LogicalOptimizer

Field Summary

Fields

Modifier and Type	Field	Description
protected final List<HeuristicForLogicalOptimization>	heuristics

Constructor Summary

Constructors

Constructor	Description
HeuristicsBasedLogicalOptimizerImpl(List<HeuristicForLogicalOptimization> heuristics)

Method Summary

Modifier and Type	Method	Description
static List<HeuristicForLogicalOptimization>	getDefaultHeuristics(QueryProcContext ctxt)
LogicalPlan	optimize(LogicalPlan inputPlan, boolean keepNaryOperators, QueryProcContext ctxt)

Methods inherited from class java.lang.Object

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

Field Details

heuristics

protected final List<HeuristicForLogicalOptimization> heuristics

Constructor Details

HeuristicsBasedLogicalOptimizerImpl

public HeuristicsBasedLogicalOptimizerImpl(List<HeuristicForLogicalOptimization> heuristics)

Method Details

getDefaultHeuristics

public static List<HeuristicForLogicalOptimization> getDefaultHeuristics(QueryProcContext ctxt)

optimize

public LogicalPlan optimize(LogicalPlan inputPlan,
 boolean keepNaryOperators,
 QueryProcContext ctxt)
                     throws LogicalOptimizationException

Specified by:

optimize in interface LogicalOptimizer

Throws:

LogicalOptimizationException