The QgsAggregateMappingModel holds mapping information for defining sets of aggregates of fields from a QgsFields object. More...

#include <qgsprocessingaggregatewidgets.h>

Inheritance diagram for QgsAggregateMappingModel:

[legend]

Classes
struct	Aggregate
	The Aggregate struct holds information about an aggregate column. More...

Public Types
enum class	ColumnDataIndex : int { SourceExpression , Aggregate , Delimiter , DestinationName , DestinationType , DestinationLength , DestinationPrecision }
	The ColumnDataIndex enum represents the column index for the view. More...

Public Member Functions
	QgsAggregateMappingModel (const QgsFields &sourceFields=QgsFields(), QObject *parent=nullptr)
	Constructs a QgsAggregateMappingModel from a set of sourceFields. More...

void	appendField (const QgsField &field, const QString &source=QString(), const QString &aggregate=QString())
	Appends a new field to the model, with an optional source and aggregate. More...

int	columnCount (const QModelIndex &parent=QModelIndex()) const override

QgsExpressionContextGenerator *	contextGenerator () const
	Returns the context generator with the source fields. More...

QVariant	data (const QModelIndex &index, int role) const override

Qt::ItemFlags	flags (const QModelIndex &index) const override

QVariant	headerData (int section, Qt::Orientation orientation, int role) const override

QList< QgsAggregateMappingModel::Aggregate >	mapping () const
	Returns a list of Aggregate objects representing the current status of the model. More...

bool	moveDown (const QModelIndex &index)
	Moves up the field at index. More...

bool	moveUp (const QModelIndex &index)
	Moves down the field at index. More...

	Q_ENUM (ColumnDataIndex)

bool	removeField (const QModelIndex &index)
	Removes the field at index from the model, returns `true` on success. More...

int	rowCount (const QModelIndex &parent=QModelIndex()) const override

void	setBaseExpressionContextGenerator (const QgsExpressionContextGenerator *generator)
	Sets the base expression context generator, which will generate the expression contexts for expression based widgets used by the model. More...

bool	setData (const QModelIndex &index, const QVariant &value, int role) override

void	setMapping (const QList< QgsAggregateMappingModel::Aggregate > &mapping)
	Sets the mapping to show in the model. More...

void	setSourceFields (const QgsFields &sourceFields)
	Set source fields to sourceFields. More...

QgsFields	sourceFields () const
	Returns a list of source fields. More...

Detailed Description

The QgsAggregateMappingModel holds mapping information for defining sets of aggregates of fields from a QgsFields object.

Since: QGIS 3.14

Definition at line 41 of file qgsprocessingaggregatewidgets.h.

Member Enumeration Documentation

◆ ColumnDataIndex

enum QgsAggregateMappingModel::ColumnDataIndex : int

strong

The ColumnDataIndex enum represents the column index for the view.

Enumerator
SourceExpression	Expression.
Aggregate	Aggregate name.
Delimiter	Delimiter.
DestinationName	Destination field name.
DestinationType	Destination field QVariant::Type casted to (int)
DestinationLength	Destination field length.
DestinationPrecision	Destination field precision.

Definition at line 51 of file qgsprocessingaggregatewidgets.h.

Constructor & Destructor Documentation

◆ QgsAggregateMappingModel()

QgsAggregateMappingModel::QgsAggregateMappingModel	(	const QgsFields &	sourceFields = `QgsFields()`,
		QObject *	parent = `nullptr`
	)

Constructs a QgsAggregateMappingModel from a set of sourceFields.

A parent object can be also specified.

Definition at line 34 of file qgsprocessingaggregatewidgets.cpp.

Member Function Documentation

◆ appendField()

void QgsAggregateMappingModel::appendField	(	const QgsField &	field,
		const QString &	source = `QString()`,
		const QString &	aggregate = `QString()`
	)

Appends a new field to the model, with an optional source and aggregate.

Definition at line 307 of file qgsprocessingaggregatewidgets.cpp.

◆ columnCount()

int QgsAggregateMappingModel::columnCount ( const QModelIndex & parent = QModelIndex() ) const

override

Definition at line 104 of file qgsprocessingaggregatewidgets.cpp.

◆ contextGenerator()

QgsExpressionContextGenerator * QgsAggregateMappingModel::contextGenerator ( ) const

Returns the context generator with the source fields.

Definition at line 285 of file qgsprocessingaggregatewidgets.cpp.

◆ data()

QVariant QgsAggregateMappingModel::data	(	const QModelIndex &	index,
		int	role
	)		const

override

Definition at line 111 of file qgsprocessingaggregatewidgets.cpp.

◆ flags()

Qt::ItemFlags QgsAggregateMappingModel::flags ( const QModelIndex & index ) const

override

Definition at line 161 of file qgsprocessingaggregatewidgets.cpp.

◆ headerData()

QVariant QgsAggregateMappingModel::headerData	(	int	section,
		Qt::Orientation	orientation,
		int	role
	)		const

override

Definition at line 42 of file qgsprocessingaggregatewidgets.cpp.

◆ mapping()

QList< QgsAggregateMappingModel::Aggregate > QgsAggregateMappingModel::mapping ( ) const

Returns a list of Aggregate objects representing the current status of the model.

Definition at line 295 of file qgsprocessingaggregatewidgets.cpp.

◆ moveDown()

bool QgsAggregateMappingModel::moveDown ( const QModelIndex & index )

Moves up the field at index.

Definition at line 340 of file qgsprocessingaggregatewidgets.cpp.

◆ moveUp()

bool QgsAggregateMappingModel::moveUp ( const QModelIndex & index )

Moves down the field at index.

Definition at line 335 of file qgsprocessingaggregatewidgets.cpp.

◆ Q_ENUM()

QgsAggregateMappingModel::Q_ENUM ( ColumnDataIndex )

◆ removeField()

bool QgsAggregateMappingModel::removeField ( const QModelIndex & index )

Removes the field at index from the model, returns true on success.

Definition at line 320 of file qgsprocessingaggregatewidgets.cpp.

◆ rowCount()

int QgsAggregateMappingModel::rowCount ( const QModelIndex & parent = QModelIndex() ) const

override

Definition at line 97 of file qgsprocessingaggregatewidgets.cpp.

◆ setBaseExpressionContextGenerator()

void QgsAggregateMappingModel::setBaseExpressionContextGenerator ( const QgsExpressionContextGenerator * generator )

Sets the base expression context generator, which will generate the expression contexts for expression based widgets used by the model.

Definition at line 290 of file qgsprocessingaggregatewidgets.cpp.

◆ setData()

bool QgsAggregateMappingModel::setData	(	const QModelIndex &	index,
		const QVariant &	value,
		int	role
	)

override

Definition at line 172 of file qgsprocessingaggregatewidgets.cpp.

◆ setMapping()

void QgsAggregateMappingModel::setMapping ( const QList< QgsAggregateMappingModel::Aggregate > & mapping )

Sets the mapping to show in the model.

Definition at line 300 of file qgsprocessingaggregatewidgets.cpp.

◆ setSourceFields()

void QgsAggregateMappingModel::setSourceFields ( const QgsFields & sourceFields )

Set source fields to sourceFields.

Definition at line 257 of file qgsprocessingaggregatewidgets.cpp.

◆ sourceFields()

QgsFields QgsAggregateMappingModel::sourceFields ( ) const

Returns a list of source fields.

Definition at line 92 of file qgsprocessingaggregatewidgets.cpp.

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

/build/qgis-3.18.1+99unstable/src/gui/processing/qgsprocessingaggregatewidgets.h
/build/qgis-3.18.1+99unstable/src/gui/processing/qgsprocessingaggregatewidgets.cpp

Classes

Public Types

Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ ColumnDataIndex

Constructor & Destructor Documentation

◆ QgsAggregateMappingModel()

Member Function Documentation

◆ appendField()

◆ columnCount()

◆ contextGenerator()

◆ data()

◆ flags()

◆ headerData()

◆ mapping()

◆ moveDown()

◆ moveUp()

◆ Q_ENUM()

◆ removeField()

◆ rowCount()

◆ setBaseExpressionContextGenerator()

◆ setData()

◆ setMapping()

◆ setSourceFields()

◆ sourceFields()