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02ec785e1b
Fix a deadlock in geometry validation. This happens when the mainthread "waits for finished" of a checker thread. What happened in this case was, that the main thread canceled the feedback and waited for any jobs to finish. If a job was waiting for a feature source (or something else to be executed on the main thread) this resulted in a mighty deadlock. What we do here is that we regularly check if we ought to cancel while waiting for our slot on the main thread and can bail out if we should cancel before the main thread gets around to take care of our function. The difference is, we still execute the code on the background thread and make sure that the main thread is not doing anything during this time to avoid working on the same data structures in parallel.
112 lines
3.2 KiB
Plaintext
112 lines
3.2 KiB
Plaintext
/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/analysis/vector/geometry_checker/qgsfeaturepool.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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class QgsFeaturePool : QgsFeatureSink /Abstract/
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{
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%Docstring
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A feature pool is based on a vector layer and caches features.
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.. note::
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This class is a technology preview and unstable API.
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.. versionadded:: 3.4
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%End
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%TypeHeaderCode
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#include "qgsfeaturepool.h"
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%End
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public:
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QgsFeaturePool( QgsVectorLayer *layer );
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virtual ~QgsFeaturePool();
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bool getFeature( QgsFeatureId id, QgsFeature &feature, QgsFeedback *feedback = 0 );
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%Docstring
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Retrieve the feature with the specified ``id`` into ``feature``.
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It will be retrieved from the cache or from the underlying layer if unavailable.
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If the feature is neither available from the cache nor from the layer it will return false.
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If ``feedback`` is specified, the call may return if the feedback is canceled.
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%End
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virtual void updateFeature( QgsFeature &feature ) = 0;
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%Docstring
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Updates a feature in this pool.
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Implementations will update the feature on the layer or on the data provider.
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%End
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virtual void deleteFeature( QgsFeatureId fid ) = 0;
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%Docstring
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Removes a feature from this pool.
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Implementations will remove the feature from the layer or from the data provider.
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%End
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QgsVectorLayer *layer() const;
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%Docstring
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Get a pointer to the underlying layer.
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May return a ``None`` if the layer has been deleted.
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This must only be called from the main thread.
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%End
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QString layerId() const;
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%Docstring
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The layer id of the layer.
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%End
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QgsWkbTypes::GeometryType geometryType() const;
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%Docstring
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The geometry type of this layer.
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%End
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QgsCoordinateReferenceSystem crs() const;
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%Docstring
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The coordinate reference system of this layer.
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%End
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protected:
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void insertFeature( const QgsFeature &feature );
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%Docstring
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Inserts a feature into the cache and the spatial index.
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To be used by implementations of ``addFeature``.
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%End
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void refreshCache( const QgsFeature &feature );
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%Docstring
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Changes a feature in the cache and the spatial index.
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To be used by implementations of ``updateFeature``.
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%End
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void removeFeature( const QgsFeatureId featureId );
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%Docstring
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Removes a feature from the cache and the spatial index.
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To be used by implementations of ``deleteFeature``.
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%End
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private:
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QgsFeaturePool( const QgsFeaturePool &other );
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};
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/************************************************************************
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* This file has been generated automatically from *
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* *
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* src/analysis/vector/geometry_checker/qgsfeaturepool.h *
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* *
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* Do not edit manually ! Edit header and run scripts/sipify.pl again *
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************************************************************************/
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