class RelSPJSemiNaiveOpt : public RelSPJNaiveOptimizer

Varies from Naive optimizer only in that it breaks the pipelined join into a series of joins

Inheritance:

Protected Methods

XxxErrCode

changeRemap (XxxExprPlan::VarRemapping& Remap, int NumChildren, int SourceToChange, int NewSourceValue, int AttrIncrement, int* InputArity) / Modify the Remap to reflect a new temporary planop.

Inherited from RelSPJNaiveOptimizer:

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)

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

Protected Methods

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

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

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

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

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

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

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

XxxErrCode changeRemap(XxxExprPlan::VarRemapping& Remap, int NumChildren, int SourceToChange, int NewSourceValue, int AttrIncrement, int* InputArity)

/ Modify the Remap to reflect a new temporary planop.

Direct child classes:

RelSPJGreedyOpt

alphabetic index hierarchy of classes

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