#include <qgsexpression.h>

Inheritance diagram for QgsExpression::StaticFunction:

Public Member Functions
Q_DECL_DEPRECATED	StaticFunction (const QString &fnname, int params, FcnEval fcn, const QString &group, const QString &helpText=QString(), bool usesGeometry=false, const QStringList &referencedColumns=QStringList(), bool lazyEval=false, const QStringList &aliases=QStringList(), bool handlesNull=false)

	StaticFunction (const QString &fnname, int params, FcnEvalContext fcn, const QString &group, const QString &helpText=QString(), bool usesGeometry=false, const QStringList &referencedColumns=QStringList(), bool lazyEval=false, const QStringList &aliases=QStringList(), bool handlesNull=false)
	Static function for evaluation against a QgsExpressionContext. More...

virtual	~StaticFunction ()

virtual QStringList	aliases () const override
	Returns a list of possible aliases for the function. More...

virtual Q_DECL_DEPRECATED QVariant	func (const QVariantList &values, const QgsFeature f, QgsExpression parent) override

virtual QVariant	func (const QVariantList &values, const QgsExpressionContext context, QgsExpression parent) override
	Returns result of evaluating the function. More...

Public Member Functions inherited from QgsExpression::Function
	Function (const QString &fnname, int params, const QString &group, const QString &helpText=QString(), bool usesGeometry=false, const QStringList &referencedColumns=QStringList(), bool lazyEval=false, bool handlesNull=false, bool isContextual=false)

virtual	~Function ()

QString	group ()
	The group the function belongs to. More...

virtual bool	handlesNull () const

const QString	helptext ()
	The help text for the function. More...

bool	isContextual () const
	Returns whether the function is only available if provided by a QgsExpressionContext object. More...

bool	lazyEval ()
	True if this function should use lazy evaluation. More...

QString	name ()
	The name of the function. More...

bool	operator== (const Function &other) const

int	params ()
	The number of parameters this function takes. More...

virtual QStringList	referencedColumns () const

bool	usesgeometry ()
	Does this function use a geometry object. More...

Detailed Description

Definition at line 442 of file qgsexpression.h.

Constructor & Destructor Documentation

Q_DECL_DEPRECATED QgsExpression::StaticFunction::StaticFunction	(	const QString &	fnname,
		int	params,
		FcnEval	fcn,
		const QString &	group,
		const QString &	helpText = `QString()`,
		bool	usesGeometry = `false`,
		const QStringList &	referencedColumns = `QStringList()`,
		bool	lazyEval = `false`,
		const QStringList &	aliases = `QStringList()`,
		bool	handlesNull = `false`
	)

inline

Definition at line 445 of file qgsexpression.h.

virtual QgsExpression::StaticFunction::~StaticFunction ( )

inlinevirtual

Definition at line 461 of file qgsexpression.h.

QgsExpression::StaticFunction::StaticFunction	(	const QString &	fnname,
		int	params,
		FcnEvalContext	fcn,
		const QString &	group,
		const QString &	helpText = `QString()`,
		bool	usesGeometry = `false`,
		const QStringList &	referencedColumns = `QStringList()`,
		bool	lazyEval = `false`,
		const QStringList &	aliases = `QStringList()`,
		bool	handlesNull = `false`
	)

inline

Static function for evaluation against a QgsExpressionContext.

Definition at line 465 of file qgsexpression.h.

Member Function Documentation

virtual QStringList QgsExpression::StaticFunction::aliases ( ) const

inlineoverridevirtual

Returns a list of possible aliases for the function.

These include other permissible names for the function, eg deprecated names.

Returns: list of known aliases

Note: added in QGIS 2.9

Reimplemented from QgsExpression::Function.

Definition at line 494 of file qgsexpression.h.

QVariant QgsExpression::StaticFunction::func	(	const QVariantList &	values,
		const QgsFeature *	f,
		QgsExpression *	parent
	)

overridevirtual

Reimplemented from QgsExpression::Function.

Definition at line 3738 of file qgsexpression.cpp.

virtual QVariant QgsExpression::StaticFunction::func	(	const QVariantList &	values,
		const QgsExpressionContext *	context,
		QgsExpression *	parent
	)

inlineoverridevirtual

Returns result of evaluating the function.

Parameters

values	list of values passed to the function
context	context expression is being evaluated against
parent	parent expression

Returns: result of function

Reimplemented from QgsExpression::Function.

Definition at line 489 of file qgsexpression.h.

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

/tmp/buildd/qgis-2.12.0+99unstable/src/core/qgsexpression.h
/tmp/buildd/qgis-2.12.0+99unstable/src/core/qgsexpression.cpp

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation