[Qgis-developer] WFS Provider Strategies

[Matthias Kuhn]

Hi,

I am a bit confused by the WFS option *"Only request features
overlapping the view extent"*.

In general, that's what every provider does by default and is a safe
strategy to use. If this option is unchecked, QGIS will just start
downloading features randomly until it hits a server limit (or not).

The only reason why one would possibly want to do that is to warm a
cache on a layer where he know he will be getting all the features (in a
reasonable time). In this case, the option should probably be renamed
(to something containing the word "cache").

Question: *is **there anybody using WFS with this option unchecked?* And
if yes, for what reason?

Apart from this, Raymond noticed that cached features are not dismissed,
when they are re-downloaded so you end up with duplicated features after
multiple rendering cycles. Does that ring a bell for someone?

Best Regards

Matthias

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-developer/attachments/20160720/89ee8c4a/attachment.html>