KDbQueryParameterExpression Class Reference

#include <KDbExpression.h>

Inheritance diagram for KDbQueryParameterExpression:

Public Member Functions
	KDbQueryParameterExpression ()
	KDbQueryParameterExpression (const KDbQueryParameterExpression &expr)
	KDbQueryParameterExpression (const QString &message)
void	setType (KDbField::Type type)
Public Member Functions inherited from KDbConstExpression
	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
	KDbQueryParameterExpression (const ExplicitlySharedExpressionDataPointer &ptr)
	KDbQueryParameterExpression (KDbExpressionData *data)
Protected Member Functions inherited from KDbConstExpression
	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 KDbQueryParameterExpression class represents query parameter expression.

Query parameter is used to getting user input of constant values. It contains a message that is displayed to the user.

Definition at line 419 of file KDbExpression.h.

Constructor & Destructor Documentation

KDbQueryParameterExpression() [1/5]

KDbQueryParameterExpression::KDbQueryParameterExpression

(

)

Constructs a null query parameter expression.

See also

KDbExpression::isNull()

Definition at line 101 of file KDbQueryParameterExpression.cpp.

KDbQueryParameterExpression() [2/5]

KDbQueryParameterExpression::KDbQueryParameterExpression ( const QString & message )

explicit

Constructs query parameter expression with message message.

Definition at line 107 of file KDbQueryParameterExpression.cpp.

KDbQueryParameterExpression() [3/5]

KDbQueryParameterExpression::KDbQueryParameterExpression

(

const KDbQueryParameterExpression &

expr

)

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

Definition at line 113 of file KDbQueryParameterExpression.cpp.

~KDbQueryParameterExpression()

KDbQueryParameterExpression::~KDbQueryParameterExpression ( )

override

Definition at line 129 of file KDbQueryParameterExpression.cpp.

KDbQueryParameterExpression() [4/5]

KDbQueryParameterExpression::KDbQueryParameterExpression ( KDbExpressionData * data )

explicitprotected

Definition at line 118 of file KDbQueryParameterExpression.cpp.

KDbQueryParameterExpression() [5/5]

KDbQueryParameterExpression::KDbQueryParameterExpression ( const ExplicitlySharedExpressionDataPointer & ptr )

explicitprotected

Definition at line 124 of file KDbQueryParameterExpression.cpp.

Member Function Documentation

setType()

void KDbQueryParameterExpression::setType

(

KDbField::Type

type

)

Sets expected type of the parameter. The default is String. This method is called from parent's expression validate(). This depends on the type of the related expression. For instance: query "SELECT * FROM cars WHERE name=[enter name]", "[enter name]" has parameter of the same type as "name" field. "=" binary expression's validate() will be called for the left side of the expression and then the right side will have type set to String.

Definition at line 133 of file KDbQueryParameterExpression.cpp.

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

• KDbExpression.h
• KDbQueryParameterExpression.cpp