Subgroup: Cached
Class: QgsCachedFeatureWriterIterator¶
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class
qgis.core.
QgsCachedFeatureWriterIterator
(vlCache: QgsVectorLayerCache, featureRequest: QgsFeatureRequest)¶ Bases:
qgis._core.QgsAbstractFeatureIterator
This constructor creates a feature iterator, which queries the backend and caches retrieved features.
Parameters: - vlCache – The vector layer cache to use
- featureRequest – The feature request to answer
QgsCachedFeatureWriterIterator(QgsCachedFeatureWriterIterator)
Uses another iterator as backend and writes features to the cache
Methods
close
Close this iterator. deref
fetchFeature
Implementation for fetching a feature. filterRectToSourceCrs
geometryToDestinationCrs
nextFeatureFilterExpression
nextFeatureFilterFids
prepareSimplification
ref
rewind
Rewind to the beginning of the iterator Signals
Attributes
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close
(self) → bool¶ Close this iterator. No further features will be available.
Returns: true if successful
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deref
()¶
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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()
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filterRectToSourceCrs
()¶
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geometryToDestinationCrs
()¶
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nextFeatureFilterExpression
()¶
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nextFeatureFilterFids
()¶
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prepareSimplification
()¶
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ref
()¶
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rewind
(self) → bool¶ Rewind to the beginning of the iterator
Returns: bool true if the operation was OK