class RelSPJNaiveOptimizer : public RelSPJOptimizer

The most naive SPJ optimizer

Inheritance:

Public Classes

class

SPJNaivePlan : public RelOptEngine::PlanObject

Public Methods

static XxxErrCode

CreateSMPlanOp (RelPlanOp*& PlanOp, int NumChildren, RelPlanOp* Children[], RelCatalogInfo* CatInfo, XxxValExprPlanList* ExprPlanList, XxxBooleanExpressionPlan** SelPredPlans, XxxBooleanExpressionPlan** JoinPredPlans, XxxBooleanExpressionPlan** ResidPredPlans, XxxBooleanExpressionPlan* InitPlan, const SMPlanGlue& Glue) Creates a Sort-merge Join planOp, placing sort planOps below if incoming tuple streams are not already sorted

static void

MakeSMGlue (int NumChildren, const RelPlanOp** Children, const XxxRelBooleanPlan *JoinPlan, SMPlanGlue& Glue) Determines the glue information to decide what sorts are needed on the inputs for a SM join

Protected Methods

XxxErrCode	constructRemap (SPJNaivePlan* SPJPlan, XxxExprPlan::VarRemapping& Remap, int NewArity, int *InputArity, XxxBool MapAttrs) / Construct a remapping
XxxErrCode	createPreds (SPJNaivePlan* SPJPlan, RelSPJOptimizer::PredPlanStruct& PredPlans) / Create the preds to be applied during the joins
XxxErrCode	exprRemap (XxxExprPlan::VarRemapping& Remap, RelSPJOptimizer::PredPlanStruct& PredPlans, int NumChildren, XxxValExprPlanList* ExprPlanList) / Modify all the expressions using the VarRemapping
XxxErrCode	getChildPlans (SPJNaivePlan* SPJPlan, RelPlanOp** ChildPlanOps, int* InputArity) / Get plans for children of this block
XxxErrCode	getInitPlan (SPJNaivePlan* SPJPlan, XxxBooleanExpressionPlan*& InitPlan) / Get the InitPlan -- used by createPreds
XxxErrCode	getJoinPlans (SPJNaivePlan* SPJPlan, RelSPJOptimizer::PredPlanStruct& PredPlans, int NumChildren, int JoinOffset, int SkipTemporary) / Get the preds for the joins -- used by createPreds

Inherited from RelSPJOptimizer:

Public Classes

class PlanGlue

class RelSPJBlockPlan: public RelBlockPlan

class SMPlanGlue: public PlanGlue

XxxBool MaterializeLtInput

/ indicate whether the inputs need a temp to sort them

int LeftRunSize

/ indicate max run sizes for sorting

class SPJNaivePlan: public RelOptEngine::PlanObject

static void MakeSMGlue(int NumChildren, const RelPlanOp** Children, const XxxRelBooleanPlan *JoinPlan, SMPlanGlue& Glue)

Determines the glue information to decide what sorts are needed on the inputs for a SM join

static XxxErrCode CreateSMPlanOp(RelPlanOp*& PlanOp, int NumChildren, RelPlanOp* Children[], RelCatalogInfo* CatInfo, XxxValExprPlanList* ExprPlanList, XxxBooleanExpressionPlan** SelPredPlans, XxxBooleanExpressionPlan** JoinPredPlans, XxxBooleanExpressionPlan** ResidPredPlans, XxxBooleanExpressionPlan* InitPlan, const SMPlanGlue& Glue)

Creates a Sort-merge Join planOp, placing sort planOps below if incoming tuple streams are not already sorted

XxxErrCode getChildPlans(SPJNaivePlan* SPJPlan, RelPlanOp** ChildPlanOps, int* InputArity)

/ Get plans for children of this block

XxxErrCode createPreds(SPJNaivePlan* SPJPlan, RelSPJOptimizer::PredPlanStruct& PredPlans)

/ Create the preds to be applied during the joins

XxxErrCode getInitPlan(SPJNaivePlan* SPJPlan, XxxBooleanExpressionPlan*& InitPlan)

/ Get the InitPlan -- used by createPreds

XxxErrCode getJoinPlans(SPJNaivePlan* SPJPlan, RelSPJOptimizer::PredPlanStruct& PredPlans, int NumChildren, int JoinOffset, int SkipTemporary)

/ Get the preds for the joins -- used by createPreds

XxxErrCode constructRemap(SPJNaivePlan* SPJPlan, XxxExprPlan::VarRemapping& Remap, int NewArity, int *InputArity, XxxBool MapAttrs)

/ Construct a remapping

XxxErrCode exprRemap(XxxExprPlan::VarRemapping& Remap, RelSPJOptimizer::PredPlanStruct& PredPlans, int NumChildren, XxxValExprPlanList* ExprPlanList)

/ Modify all the expressions using the VarRemapping

Direct child classes:

RelSPJSemiNaiveOpt

alphabetic index hierarchy of classes

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(c)opyright by Malte Zöckler, Roland Wunderling
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