A QgsFeatureSink which proxies incoming features to a destination feature sink, after applying transformations and field value mappings. More...

#include <qgsremappingproxyfeaturesink.h>

Inheritance diagram for QgsRemappingProxyFeatureSink:

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Public Member Functions
	QgsRemappingProxyFeatureSink (const QgsRemappingSinkDefinition &mappingDefinition, QgsFeatureSink *sink, bool ownsSink=false)
	Constructor for QgsRemappingProxyFeatureSink, using the specified mappingDefinition to manipulate features before sending them to the destination sink.

	~QgsRemappingProxyFeatureSink () override

bool	addFeature (QgsFeature &feature, QgsFeatureSink::Flags flags=QgsFeatureSink::Flags()) override
	Adds a single feature to the sink.

bool	addFeatures (QgsFeatureIterator &iterator, QgsFeatureSink::Flags flags=QgsFeatureSink::Flags()) override
	Adds all features from the specified iterator to the sink.

bool	addFeatures (QgsFeatureList &features, QgsFeatureSink::Flags flags=QgsFeatureSink::Flags()) override
	Adds a list of features to the sink.

QgsFeatureSink *	destinationSink ()
	Returns the destination QgsFeatureSink which the proxy will forward features to.

QString	lastError () const override
	Returns the most recent error encountered by the sink, e.g.

QgsFeatureList	remapFeature (const QgsFeature &feature) const
	Remaps a feature to a set of features compatible with the destination sink.

void	setExpressionContext (const QgsExpressionContext &context) const
	Sets the expression context to use when evaluating mapped field values.

void	setTransformContext (const QgsCoordinateTransformContext &context)
	Sets the transform context to use when reprojecting features.

Public Member Functions inherited from QgsFeatureSink
virtual	~QgsFeatureSink ()=default

virtual bool	flushBuffer ()
	Flushes any internal buffer which may exist in the sink, causing any buffered features to be added to the sink's destination.

Additional Inherited Members
Public Types inherited from QgsFeatureSink
enum	Flag { FastInsert = 1 << 1 , RollBackOnErrors = 1 << 2 }
	Flags controlling how features are added to a sink. More...

enum	SinkFlag { RegeneratePrimaryKey = 1 << 1 }
	Flags that can be set on a QgsFeatureSink. More...

Detailed Description

A QgsFeatureSink which proxies incoming features to a destination feature sink, after applying transformations and field value mappings.

This sink allows for transformation of incoming features to match the requirements of storing in an existing destination layer, e.g. by reprojecting the features to the destination's CRS and by coercing geometries to the format required by the destination sink.

Since: QGIS 3.14

Definition at line 180 of file qgsremappingproxyfeaturesink.h.

Constructor & Destructor Documentation

◆ QgsRemappingProxyFeatureSink()

QgsRemappingProxyFeatureSink::QgsRemappingProxyFeatureSink	(	const QgsRemappingSinkDefinition &	mappingDefinition,
		QgsFeatureSink *	sink,
		bool	ownsSink = `false`
	)

Constructor for QgsRemappingProxyFeatureSink, using the specified mappingDefinition to manipulate features before sending them to the destination sink.

Ownership of sink is dictated by ownsSink. If ownsSink is false, ownership is not transferred, and callers must ensure that sink exists for the lifetime of this object. If ownsSink is true, then this object will take ownership of sink.

Definition at line 21 of file qgsremappingproxyfeaturesink.cpp.