Hi
I'm doing work on the geometry checker in QGIS master and noticed that,
when deleting features from an ogr vector layer, FeatureIds appear to be
reassigned to fill up the gap in the ids. This is a pretty serious
blocker for the geometry checker since geometry checker errors are
identified by the feature id (and other parameters). So if the
FeatureIds change, the geometry checker errors may suddenly reference
the wrong feature, causing general mayhem.
Can anyone confirm that indeed FeatureIds are being purposefully
reassigned, and whether there is a rationale behind this change (I never
observed this before in QGIS 2.x)? And if so, what other options exist
to reliably reference a feature over the entire lifetime of the layer
being loaded in QGIS?
Note that in the geometry checker, I don't use the edit buffer, but
write each change directly to the data provider. This to avoid that
situations where, after fixing multiple errors, the final result cannot
be committed due to a particular geometry still being invalid and the
provider refusing to accept the change.
Thanks
Sandro
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