class XxxBoolBooleanExpression : public XxxBooleanExpression

A boolean term (AND, OR, NOT)

Inheritance:

Public Methods

virtual XxxExpression*	Replicate () Provides a convenient way to copy arbitrary expressions
	XxxBoolBooleanExpression (const XxxBoolBooleanExpression& src) Copy constructor

Inherited from XxxBooleanExpression:

Public Classes

class SelectivityStatsInfo

Inherited from XxxValueExpression:

Public Classes

enum ValExprTypeEnum

Public Fields

char* ExprName

Public Methods

virtual int Arity()

inline XxxValueExpression* ChildExpr(int i)

virtual XxxValueExprList* DirectSubexpressions()

virtual XxxADTMetaInfo* GenerateCatInfo()

virtual XxxErrCode GetDependencies(XxxBitMap& Dependendency, int CorrelationHt)

virtual XxxBool IsConstant()

virtual XxxBool Match(const XxxValueExpression* OtherExpr, char *Env = NULL)

virtual XxxBool Match(const XxxValueExpression* RuleExpr, XxxBindingEnv *BindEnv)

virtual XxxErrCode Optimize(XxxValueExprPlan*& ExecPlan)

virtual void Print(ostream&)

virtual XxxBool ReferencesAggregate()

virtual XxxErrCode Replace(const XxxValueExpression *Target, const XxxValueExpression *Replacement)

virtual XxxErrCode Replace(const XxxUnknownValue *Target, const XxxValueExpression *Replacement)

virtual XxxErrCode ResolveVars(const XxxArgEnv* Env)

virtual XxxErrCode ResolveVars(const XxxRecordSchema *Schema)

virtual XxxErrCode ResolveVars(XxxQueryNode* Node, char Source)

XxxErrCode SetChild(int Index, XxxValueExpression* NewExp)

virtual XxxErrCode TypeCheck()

virtual XxxErrCode UpdateUnknowns(int ChildNumber, int OldAttrIndex, int NewAttrIndex, XxxBool &Appears)

virtual XxxValueExprList* ValExprsReferenced()

Public

typedef enum ValExprTypeEnum ValExprType

enum ValExprTypeEnum

Protected Fields

int arity

XxxValueExpression** childExpr

XxxBoolBooleanExpression(const XxxBoolBooleanExpression& src)

Copy constructor. Makes a complete copy (recursing if necessary) of the supplied expression.

virtual XxxExpression* Replicate()

Provides a convenient way to copy arbitrary expressions. It is unsafe to use copy constructors for expressions, since a derived class's copy constructor may not be called for a parent class. Thus every expression has a replicate method, which provides a common way to duplicate an expression.

This class has no child classes.

Author:

Praveen

alphabetic index hierarchy of classes

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