QGIS API Documentation  2.99.0-Master (37c43df)
qgscacheindexfeatureid.h
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1 /***************************************************************************
2  qgscacheindexfeatureid.h
3  --------------------------------------
4  Date : 13.2.2013
5  Copyright : (C) 2013 Matthias Kuhn
6  Email : matthias at opengis dot ch
7  ***************************************************************************
8  * *
9  * This program is free software; you can redistribute it and/or modify *
10  * it under the terms of the GNU General Public License as published by *
11  * the Free Software Foundation; either version 2 of the License, or *
12  * (at your option) any later version. *
13  * *
14  ***************************************************************************/
15 
16 #ifndef QGSCACHEINDEXFEATUREID_H
17 #define QGSCACHEINDEXFEATUREID_H
18 
19 #include "qgscacheindex.h"
20 
22 
27 {
28  public:
30 
31  virtual void flushFeature( const QgsFeatureId fid ) override;
32  virtual void flush() override;
33  virtual void requestCompleted( const QgsFeatureRequest& featureRequest, const QgsFeatureIds& fids ) override;
34  virtual bool getCacheIterator( QgsFeatureIterator& featureIterator, const QgsFeatureRequest& featureRequest ) override;
35 
36  private:
38 };
39 
40 #endif // QGSCACHEINDEXFEATUREID_H
Wrapper for iterator of features from vector data provider or vector layer.
QSet< QgsFeatureId > QgsFeatureIds
Definition: qgsfeature.h:355
virtual void requestCompleted(const QgsFeatureRequest &featureRequest, const QgsFeatureIds &fids)
Implement this method to update the the indices, in case you need information contained by the reques...
This class wraps a request for features to a vector layer (or directly its vector data provider)...
This class caches features of a given QgsVectorLayer.
virtual void flush()=0
Sometimes, the whole cache changes its state and its easier to just withdraw everything.
virtual bool getCacheIterator(QgsFeatureIterator &featureIterator, const QgsFeatureRequest &featureRequest)=0
Is called, when a feature request is issued on a cached layer.
Abstract base class for cache indices.
Definition: qgscacheindex.h:29
virtual void flushFeature(const QgsFeatureId fid)=0
Is called, whenever a feature is removed from the cache.
qint64 QgsFeatureId
Definition: qgsfeature.h:32