KDbVariableExpressionData Class Reference

#include <KDbExpressionData.h>

Inheritance diagram for KDbVariableExpressionData:

Public Member Functions
	KDbVariableExpressionData (const QString &aName)
KDbVariableExpressionData *	clone () override
void	getQueryParameters (QList< KDbQuerySchemaParameter > *params) override
Public Member Functions inherited from KDbExpressionData
template<typename T>
T *	convert ()
template<typename T>
const T *	convertConst () const
QDebug	debug (QDebug dbg, KDb::ExpressionCallStack *callStack) const
bool	isDateTimeType () const
bool	isFPNumericType () const
bool	isIntegerType () const
bool	isNumericType () const
bool	isTextType () const
bool	isValid () const
KDbEscapedString	toString (const KDbDriver *driver, KDbQuerySchemaParameterValueListIterator *params=nullptr, KDb::ExpressionCallStack *callStack=nullptr) const
KDbField::Type	type () const
KDbField::Type	type (KDb::ExpressionCallStack *callStack) const
bool	validate (KDbParseInfo *parseInfo)
bool	validate (KDbParseInfo *parseInfo, KDb::ExpressionCallStack *callStack)
Public Member Functions inherited from QSharedData
	QSharedData (const QSharedData &)

Public Attributes
KDbField *	field
QString	name
KDbTableSchema *	tableForQueryAsterisk
int	tablePositionForField
Public Attributes inherited from KDbExpressionData
QList< ExplicitlySharedExpressionDataPointer >	children
KDb::ExpressionClass	expressionClass
ExplicitlySharedExpressionDataPointer	parent
KDbToken	token

Protected Member Functions
void	debugInternal (QDebug dbg, KDb::ExpressionCallStack *callStack) const override
KDbEscapedString	toStringInternal (const KDbDriver *driver, KDbQuerySchemaParameterValueListIterator *params, KDb::ExpressionCallStack *callStack) const override
KDbField::Type	typeInternal (KDb::ExpressionCallStack *callStack) const override
bool	validateInternal (KDbParseInfo *parseInfo, KDb::ExpressionCallStack *callStack) override
Protected Member Functions inherited from KDbExpressionData
bool	addToCallStack (QDebug *dbg, KDb::ExpressionCallStack *callStack) const

Detailed Description

Internal data class used to implement implicitly shared class KDbVariableExpression.

Provides thread-safe reference counting.

Definition at line 268 of file KDbExpressionData.h.

Constructor & Destructor Documentation

KDbVariableExpressionData() [1/2]

KDbVariableExpressionData::KDbVariableExpressionData

(

)

Definition at line 30 of file KDbVariableExpression.cpp.

KDbVariableExpressionData() [2/2]

KDbVariableExpressionData::KDbVariableExpressionData ( const QString & aName )

explicit

Definition at line 39 of file KDbVariableExpression.cpp.

~KDbVariableExpressionData()

KDbVariableExpressionData::~KDbVariableExpressionData ( )

override

Definition at line 49 of file KDbVariableExpression.cpp.

Member Function Documentation

clone()

KDbVariableExpressionData * KDbVariableExpressionData::clone ( )

overridevirtual

Reimplemented from KDbExpressionData.

Definition at line 54 of file KDbVariableExpression.cpp.

debugInternal()

void KDbVariableExpressionData::debugInternal ( QDebug dbg, KDb::ExpressionCallStack * callStack ) const

overrideprotectedvirtual

Sends information about this expression to debug output dbg (internal).

Reimplemented from KDbExpressionData.

Definition at line 60 of file KDbVariableExpression.cpp.

getQueryParameters()

void KDbVariableExpressionData::getQueryParameters ( QList< KDbQuerySchemaParameter > * params )

overridevirtual

Reimplemented from KDbExpressionData.

Definition at line 79 of file KDbVariableExpression.cpp.

toStringInternal()

KDbEscapedString KDbVariableExpressionData::toStringInternal ( const KDbDriver * driver, KDbQuerySchemaParameterValueListIterator * params, KDb::ExpressionCallStack * callStack ) const

overrideprotectedvirtual

Reimplemented from KDbExpressionData.

Definition at line 68 of file KDbVariableExpression.cpp.

typeInternal()

KDbField::Type KDbVariableExpressionData::typeInternal ( KDb::ExpressionCallStack * callStack ) const

overrideprotectedvirtual

We're assuming it's called after VariableExpr::validate()

Reimplemented from KDbExpressionData.

Definition at line 85 of file KDbVariableExpression.cpp.

validateInternal()

bool KDbVariableExpressionData::validateInternal ( KDbParseInfo * parseInfo, KDb::ExpressionCallStack * callStack )

overrideprotectedvirtual

Validation. Sets field, tablePositionForField and tableForQueryAsterisk members. See addColumn() in parse.y to see how it's used on column adding.

Todo

shall we also support db name?

Reimplemented from KDbExpressionData.

Definition at line 102 of file KDbVariableExpression.cpp.

Member Data Documentation

field

KDbField* KDbVariableExpressionData::field

0 by default. After successful validate() it will point to a field, if the variable is of a form "tablename.fieldname" or "fieldname", otherwise (eg. for asterisks) still 0. Only meaningful for column expressions within a query.

Definition at line 283 of file KDbExpressionData.h.

name

QString KDbVariableExpressionData::name

Verbatim name as returned by scanner.

Definition at line 277 of file KDbExpressionData.h.

tableForQueryAsterisk

KDbTableSchema* KDbVariableExpressionData::tableForQueryAsterisk

0 by default. After successful validate() it will point to a table that is referenced by asterisk, i.e. "*.tablename". This is set to nullptr if this variable is not an asterisk of that form.

Definition at line 296 of file KDbExpressionData.h.

tablePositionForField

int KDbVariableExpressionData::tablePositionForField

-1 by default. After successful validate() it will contain a position of a table within query that needs to be bound to the field. This value can be either be -1 if no binding is needed. This value is used in the Parser to call KDbQuerySchema::addField(KDbField* field, int bindToTable); Only meaningful for column expressions within a query.

Definition at line 291 of file KDbExpressionData.h.

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The documentation for this class was generated from the following files:

• KDbExpressionData.h
• KDbVariableExpression.cpp