Definition at line 26 of file qgscacheindexfeatureid.h.
Sometimes, the whole cache changes its state and its easier to just withdraw everything.
In this case, this method is issued. Be sure to clear all cache information in here.
Definition at line 33 of file qgscacheindexfeatureid.cpp.
Is called, whenever a feature is removed from the cache.
You should update your indexes, so they become invalid in case this feature was required to successfuly answer a request.
Definition at line 28 of file qgscacheindexfeatureid.cpp.
Is called, when a feature request is issued on a cached layer.
If this cache index is able to completely answer the feature request, it will return true and write the list of feature ids of cached features to cachedFeatures. If it is not able it will return false and the cachedFeatures state is undefined.
|featureIterator||A reference to a QgsFeatureIterator. A valid featureIterator will be assigned in case this index is able to answer the request and the return value is true. |
|featureRequest||The feature request, for which this index is queried.|
- True, if this index holds the information to answer the request.
Definition at line 43 of file qgscacheindexfeatureid.cpp.
Implement this method to update the the indices, in case you need information contained by the request to properly index.
(E.g. spatial index) Does nothing by default
|featureRequest||The feature request that was answered |
|fids||The feature ids that have been returned |
Reimplemented from QgsAbstractCacheIndex.
Definition at line 37 of file qgscacheindexfeatureid.cpp.
The documentation for this class was generated from the following files: