net.sf.farrago.defimpl
Class FarragoDefaultPlanner

java.lang.Object
  org.eigenbase.relopt.AbstractRelOptPlanner
      org.eigenbase.relopt.volcano.VolcanoPlanner
          net.sf.farrago.defimpl.FarragoDefaultPlanner

All Implemented Interfaces:

FarragoSessionPlanner, RelOptPlanner

Direct Known Subclasses:

FarragoMiniplanPersonalityFactory.FarragoVolcanoMiniplanner

public class FarragoDefaultPlanner
extends VolcanoPlanner
implements FarragoSessionPlanner

FarragoDefaultPlanner extends VolcanoPlanner to request Farrago-specific optimizations.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/defimpl/FarragoDefaultPlanner.java#42 $

Author:

John V. Sichi

Field Summary

private FarragoPreparingStmt

stmt

Fields inherited from class org.eigenbase.relopt.volcano.VolcanoPlanner

ambitious, CostImprovement, impatient, root, ruleSet

Fields inherited from interface org.eigenbase.relopt.RelOptPlanner

tracer

Constructor Summary

FarragoDefaultPlanner(FarragoSessionPreparingStmt stmt)
Creates a new FarragoDefaultPlanner object.

Method Summary

static void	addFennelCalcRules(FarragoSessionPlanner planner, boolean auto)
static void	addStandardRules(FarragoSessionPlanner planner, boolean fennelEnabled, CalcVirtualMachine calcVM) Adds a set of standard rules to a planner.
void	beginMedPluginRegistration(String serverClassName) Notifies this planner that registration for a particular SQL/MED plugin is about to start, meaning the plugin might call the planner via methods such as RelOptPlanner.addRule(org.eigenbase.relopt.RelOptRule).
void	endMedPluginRegistration() Notifies this planner that registration has ended for the SQL/MED plugin whose identity was last passed to beginMedPluginRegistration.
JavaRelImplementor	getJavaRelImplementor(RelNode rel) Retrieves an implementor appropriate for the context in which this planner was created.
FarragoSessionPreparingStmt	getPreparingStmt()
void	init() Initializes Farrago-specific rules for this planner.

Methods inherited from class org.eigenbase.relopt.volcano.VolcanoPlanner

addListener, addRelTraitDef, addRule, canConvert, changeTraits, chooseDelegate, dump, ensureRegistered, findBestExp, getConversionOperands, getCost, getPhaseRuleMappingInitializer, getRelMetadataTimestamp, getRoot, getSet, getSubset, getSubset, getSubset, isRegistered, makeCost, makeHugeCost, makeInfiniteCost, makeTinyCost, makeZeroCost, normalizePlan, register, registerAbstractRelationalRules, registerMetadataProviders, registerSchema, removeRule, setImportance, setRoot, validate

Methods inherited from class org.eigenbase.relopt.AbstractRelOptPlanner

checkCancel, fireRule, getListener, getRuleByDescription, isRuleExcluded, mapRuleDescription, notifyChosen, notifyDiscard, notifyEquivalence, notifyTransformation, setCancelFlag, setRuleDescExclusionFilter, unmapRuleDescription

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eigenbase.relopt.RelOptPlanner

addListener, addRelTraitDef, addRule, changeTraits, chooseDelegate, ensureRegistered, findBestExp, getCost, getRelMetadataTimestamp, getRoot, isRegistered, makeCost, makeHugeCost, makeInfiniteCost, makeTinyCost, makeZeroCost, register, registerMetadataProviders, registerSchema, removeRule, setCancelFlag, setImportance, setRoot, setRuleDescExclusionFilter

Field Detail

stmt

private FarragoPreparingStmt stmt

Constructor Detail

FarragoDefaultPlanner

public FarragoDefaultPlanner(FarragoSessionPreparingStmt stmt)

Creates a new FarragoDefaultPlanner object.

Parameters:

stmt - statement on whose behalf this planner operates

Method Detail

init

public void init()

Initializes Farrago-specific rules for this planner.

addStandardRules

public static void addStandardRules(FarragoSessionPlanner planner,
                                    boolean fennelEnabled,
                                    CalcVirtualMachine calcVM)

Adds a set of standard rules to a planner.

Parameters:

planner - Planner

fennelEnabled - Whether fennel is enabled.

calcVM - Flavor of calculator being used.

addFennelCalcRules

public static void addFennelCalcRules(FarragoSessionPlanner planner,
                                      boolean auto)

getPreparingStmt

public FarragoSessionPreparingStmt getPreparingStmt()

Specified by:

getPreparingStmt in interface FarragoSessionPlanner

Returns:

the FarragoSessionPreparingStmt associated with this planner.

beginMedPluginRegistration

public void beginMedPluginRegistration(String serverClassName)

Description copied from interface: FarragoSessionPlanner

Notifies this planner that registration for a particular SQL/MED plugin is about to start, meaning the plugin might call the planner via methods such as RelOptPlanner.addRule(org.eigenbase.relopt.RelOptRule).

Specified by:

beginMedPluginRegistration in interface FarragoSessionPlanner

Parameters:

serverClassName - name of class implementing FarragoMedDataServer

endMedPluginRegistration

public void endMedPluginRegistration()

Description copied from interface: FarragoSessionPlanner

Notifies this planner that registration has ended for the SQL/MED plugin whose identity was last passed to beginMedPluginRegistration.

Specified by:

endMedPluginRegistration in interface FarragoSessionPlanner

getJavaRelImplementor

public JavaRelImplementor getJavaRelImplementor(RelNode rel)

Description copied from interface: RelOptPlanner

Retrieves an implementor appropriate for the context in which this planner was created.

Specified by:

getJavaRelImplementor in interface RelOptPlanner

Overrides:

getJavaRelImplementor in class VolcanoPlanner