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qgscacheindex.h
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1 /***************************************************************************
2  qgscacheindex.h
3  --------------------------------------
4  Date : 13.2.2013
5  Copyright : (C) 2013 Matthias Kuhn
6  Email : matthias dot kuhn at gmx 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 QGSCACHEINDEX_H
17 #define QGSCACHEINDEX_H
18 
19 #include "qgsfeature.h" // QgsFeatureIds
20 
21 class QgsFeatureRequest;
22 class QgsFeatureIterator;
23 
29 class CORE_EXPORT QgsAbstractCacheIndex
30 {
31  public:
33  virtual ~QgsAbstractCacheIndex();
34 
39  virtual void flushFeature( const QgsFeatureId fid ) = 0;
40 
45  virtual void flush() = 0;
46 
56  virtual void requestCompleted( QgsFeatureRequest featureRequest, QgsFeatureIds fids );
57 
72  virtual bool getCacheIterator( QgsFeatureIterator& featureIterator, const QgsFeatureRequest& featureRequest ) = 0;
73 };
74 
75 #endif // QGSCACHEINDEX_H
Wrapper for iterator of features from vector data provider or vector layer.
Definition: qgsfeatureiterator.h:139
QSet< QgsFeatureId > QgsFeatureIds
Definition: qgsfeature.h:325
This class wraps a request for features to a vector layer (or directly its vector data provider)...
Definition: qgsfeaturerequest.h:58
Abstract base class for cache indices.
Definition: qgscacheindex.h:29
qint64 QgsFeatureId
Definition: qgsfeature.h:30