Class: QgsCachedFeatureIterator

class qgis.core.QgsCachedFeatureIterator(vlCache: QgsVectorLayerCache, featureRequest: QgsFeatureRequest)

Bases: qgis._core.QgsAbstractFeatureIterator

This constructor creates a feature iterator, that delivers all cached features. No request is made to the backend.

Parameters:
  • vlCache – The vector layer cache to use
  • featureRequest – The feature request to answer

QgsCachedFeatureIterator(QgsCachedFeatureIterator)

Delivers features from the cache

Methods

close Close this iterator.
deref
fetchFeature Implementation for fetching a feature.
filterRectToSourceCrs
geometryToDestinationCrs
nextFeatureFilterExpression
nextFeatureFilterFids We have a local special iterator for FilterFids, no need to run the generic.
prepareSimplification
ref
rewind Rewind to the beginning of the iterator

Signals

Attributes

close(self) → bool

Close this iterator. No further features will be available.

Returns:true if successful
deref()
fetchFeature(self, f: QgsFeature) → bool

Implementation for fetching a feature.

Parameters:f – Will write to this feature
Returns:bool true if the operation was OK

See also

bool()

filterRectToSourceCrs()
geometryToDestinationCrs()
nextFeatureFilterExpression()
nextFeatureFilterFids(self, f: QgsFeature) → bool

We have a local special iterator for FilterFids, no need to run the generic.

Parameters:f – Will write to this feature
Returns:bool true if the operation was OK
prepareSimplification()
ref()
rewind(self) → bool

Rewind to the beginning of the iterator

Returns:bool true if the operation was OK