KDbConstExpression Class Reference

#include <KDbExpression.h>

Inheritance diagram for KDbConstExpression:

Public Member Functions
	KDbConstExpression ()
	KDbConstExpression (const KDbConstExpression &expr)
	KDbConstExpression (KDbToken token, const QVariant &value)
void	setValue (const QVariant &value)
QVariant	value () const
Public Member Functions inherited from KDbExpression
	KDbExpression ()
KDbExpression	clone () const
QDebug	debug (QDebug dbg, KDb::ExpressionCallStack *callStack) const
KDb::ExpressionClass	expressionClass () const
void	getQueryParameters (QList< KDbQuerySchemaParameter > *params)
bool	isBinary () const
bool	isConst () const
bool	isDateTimeType () const
bool	isFPNumericType () const
bool	isFunction () const
bool	isIntegerType () const
bool	isNArg () const
bool	isNull () const
bool	isNumericType () const
bool	isQueryParameter () const
bool	isTextType () const
bool	isUnary () const
bool	isValid () const
bool	isVariable () const
bool	operator!= (const KDbExpression &e) const
bool	operator== (const KDbExpression &e) const
KDbExpression	parent () const
void	setExpressionClass (KDb::ExpressionClass aClass)
void	setToken (KDbToken token)
KDbBinaryExpression	toBinary () const
KDbConstExpression	toConst () const
KDbFunctionExpression	toFunction () const
KDbToken	token () const
KDbNArgExpression	toNArg () const
KDbQueryParameterExpression	toQueryParameter () const
KDbEscapedString	toString (const KDbDriver *driver, KDbQuerySchemaParameterValueListIterator *params=nullptr, KDb::ExpressionCallStack *callStack=nullptr) const
KDbUnaryExpression	toUnary () const
KDbVariableExpression	toVariable () const
KDbField::Type	type () const
bool	validate (KDbParseInfo *parseInfo)

Protected Member Functions
	KDbConstExpression (const ExplicitlySharedExpressionDataPointer &ptr)
	KDbConstExpression (KDbExpressionData *data)
	KDbConstExpression (KDbExpressionData *data, KDb::ExpressionClass aClass, KDbToken token)
Protected Member Functions inherited from KDbExpression
	KDbExpression (const ExplicitlySharedExpressionDataPointer &ptr)
	KDbExpression (KDbExpressionData *data)
	KDbExpression (KDbExpressionData *data, KDb::ExpressionClass aClass, KDbToken token)
void	appendChild (const ExplicitlySharedExpressionDataPointer &child)
void	appendChild (const KDbExpression &child)
bool	checkBeforeInsert (const ExplicitlySharedExpressionDataPointer &child)
QList< ExplicitlySharedExpressionDataPointer >	children () const
int	indexOfChild (const KDbExpression &child, int from=0) const
void	insertChild (int i, const KDbExpression &child)
void	insertEmptyChild (int i)
int	lastIndexOfChild (const KDbExpression &child, int from=-1) const
void	prependChild (const KDbExpression &child)
bool	removeChild (const KDbExpression &child)
void	removeChild (int i)
void	setLeftOrRight (const KDbExpression &right, int index)
KDbExpression	takeChild (int i)

Additional Inherited Members
Static Public Member Functions inherited from KDbExpression
static KDb::ExpressionClass	classForToken (KDbToken token)
Protected Attributes inherited from KDbExpression
ExplicitlySharedExpressionDataPointer	d

Detailed Description

The KDbConstExpression class represents const expression.

Types are string, integer, float constants. Also includes NULL value. Token can be: IDENTIFIER, SQL_NULL, SQL_TRUE, SQL_FALSE, CHARACTER_STRING_LITERAL, INTEGER_CONST, REAL_CONST, DATE_CONST, DATETIME_CONST, TIME_CONST.

Note

For REAL_CONST accepted values can be of type qreal, double and QPoint. In the case of QPoint, integer value (with a sign) is stored in QPoint::x and the fraction part (that should be always positive) is stored in QPoint::y. This gives 31 bits for the integer part (10 decimal digits) and 31 bits for the part (10 decimal digits).

Definition at line 386 of file KDbExpression.h.

Constructor & Destructor Documentation

KDbConstExpression() [1/6]

KDbConstExpression::KDbConstExpression

(

)

Constructs a null const expression.

See also

KDbExpression::isNull()

Definition at line 166 of file KDbConstExpression.cpp.

KDbConstExpression() [2/6]

KDbConstExpression::KDbConstExpression	(	KDbToken	token,
		const QVariant &	value )

Constructs const expression token token and value value.

Definition at line 172 of file KDbConstExpression.cpp.

KDbConstExpression() [3/6]

KDbConstExpression::KDbConstExpression

(

const KDbConstExpression &

expr

)

Constructs a copy of other const expression expr. Resulting object is not a deep copy but rather a reference to the object expr.

Definition at line 193 of file KDbConstExpression.cpp.

~KDbConstExpression()

KDbConstExpression::~KDbConstExpression ( )

override

Definition at line 198 of file KDbConstExpression.cpp.

KDbConstExpression() [4/6]

KDbConstExpression::KDbConstExpression ( KDbExpressionData * data, KDb::ExpressionClass aClass, KDbToken token )

protected

Internal, used by KDbQueryParameterExpression(const QString& message).

Definition at line 177 of file KDbConstExpression.cpp.

KDbConstExpression() [5/6]

KDbConstExpression::KDbConstExpression ( KDbExpressionData * data )

explicitprotected

Definition at line 183 of file KDbConstExpression.cpp.

KDbConstExpression() [6/6]

KDbConstExpression::KDbConstExpression ( const ExplicitlySharedExpressionDataPointer & ptr )

explicitprotected

Definition at line 188 of file KDbConstExpression.cpp.

Member Function Documentation

setValue()

void KDbConstExpression::setValue

(

const QVariant &

value

)

Definition at line 207 of file KDbConstExpression.cpp.

value()

QVariant KDbConstExpression::value

(

)

const

Definition at line 202 of file KDbConstExpression.cpp.

---

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

• KDbExpression.h
• KDbConstExpression.cpp