A simple feature sink which proxies feature addition on to another feature sink. More...

#include <qgsfeaturesink.h>

Inheritance diagram for QgsProxyFeatureSink:

Public Member Functions
	QgsProxyFeatureSink (QgsFeatureSink *sink)
	Constructs a new QgsProxyFeatureSink which forwards features onto a destination sink. More...

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

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

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

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

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. More...

Additional Inherited Members
Public Types inherited from QgsFeatureSink
enum	Flag { FastInsert = 1 << 1 }
	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 simple feature sink which proxies feature addition on to another feature sink.

This class is designed to allow factory methods which always return new QgsFeatureSink objects. Since it is not always possible to create an entirely new QgsFeatureSink (e.g. if the feature sink is a layer's data provider), a new QgsProxyFeatureSink can instead be returned which forwards features on to the destination sink. The proxy sink can be safely deleted without affecting the destination sink.