Class: QgsProxyFeatureSink

class qgis.core.QgsProxyFeatureSink(sink: QgsFeatureSink)

Bases: QgsFeatureSink

Constructs a new QgsProxyFeatureSink which forwards features onto a destination sink.

QgsProxyFeatureSink(QgsProxyFeatureSink)

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.

New in version 3.0.

Parameters

sink

addFeature(self, feature: QgsFeature, flags: Union[QgsFeatureSink.Flags, QgsFeatureSink.Flag] = 0) → bool
Parameters
Return type

bool

addFeatures(self, features: Iterable[QgsFeature], flags: Union[QgsFeatureSink.Flags, QgsFeatureSink.Flag] = 0) → bool

addFeatures(self, iterator: QgsFeatureIterator, flags: Union[QgsFeatureSink.Flags, QgsFeatureSink.Flag] = 0) -> bool

Parameters
Return type

bool

destinationSink(self) → QgsFeatureSink

Returns the destination QgsFeatureSink which the proxy will forward features to.

Return type

QgsFeatureSink