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.

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.

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

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

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.

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

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

	Q_ENUM (ColumnDataIndex)

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

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.

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.

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

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

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 class 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 type string.
DestinationLength	Destination field length.
DestinationPrecision	Destination field precision.

Definition at line 49 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 36 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 306 of file qgsprocessingaggregatewidgets.cpp.

◆ columnCount()

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

override

Definition at line 105 of file qgsprocessingaggregatewidgets.cpp.

◆ contextGenerator()

QgsExpressionContextGenerator * QgsAggregateMappingModel::contextGenerator ( ) const

Returns the context generator with the source fields.

Definition at line 280 of file qgsprocessingaggregatewidgets.cpp.

◆ data()

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

override

Definition at line 112 of file qgsprocessingaggregatewidgets.cpp.

◆ flags()

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

override

Definition at line 162 of file qgsprocessingaggregatewidgets.cpp.

◆ headerData()

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

override

Definition at line 43 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 290 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 98 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 285 of file qgsprocessingaggregatewidgets.cpp.

◆ setData()

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

override

Definition at line 171 of file qgsprocessingaggregatewidgets.cpp.

◆ setMapping()

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

Sets the mapping to show in the model.

Definition at line 295 of file qgsprocessingaggregatewidgets.cpp.

◆ setSourceFields()

void QgsAggregateMappingModel::setSourceFields ( const QgsFields & sourceFields )

Set source fields to sourceFields.

Definition at line 252 of file qgsprocessingaggregatewidgets.cpp.

◆ sourceFields()

QgsFields QgsAggregateMappingModel::sourceFields ( ) const

Returns a list of source fields.

Definition at line 93 of file qgsprocessingaggregatewidgets.cpp.

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

/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/src/gui/processing/qgsprocessingaggregatewidgets.h
/build/qgis-3.41.0+git20241214+cea29feecf2+99sid/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()