Le 25/01/2019 à 10:34, Andrea Aime a écrit :
Oh dear, now I see it... and it's truly horrible! :-D
I thought the various FeatureTypeStyle had a different FeatureTypeName,
but it's just a different Name instead.
FeatureTypeStyles are very heavy objects rendering wise, you should not
use them as mere classifiers.
Every time you create a FeatureTypeStyle, a new z level in the map is
created.
So creating a new z level for each FeatureTypeStyle is pretty much what
was intended.
This means that even in the best of conditions, with that style
GeoServer would be allocating tens of drawing surfaces, with an insane
memory usage going with it (I think I see 42 FeatureTypeStyles, for a
4x4 metatile , 1024x1024, 4 bytes per pixel, that would be 168MB of RAM
(you don't get that high, see below, the stacks of rendering surfaces
are actually split in two).
Now, that's indeed very bad. I do need to rewrite things.
So why is it doing two queries anyways? Because you have two different
names for the sortGroup, which makes the various feature type styles
un-mergeable.
Oh OK, now I see it ! Nice pick Andrea !
Do yourself a favor and, if possible, use a single FeatureTypeStyle
instead ;-)
OK, I understand the problem now, very clear.
The problem is that I do need to order all these features the way I did
(i.e., for instance, 'water' on top of 'wood').
So, from what you say, the "right" way to do this would be to use a
single FeatureTypeStyle for the first sortByGroup, and use a zOrder and
add the appropriate column in my datasource ?
For the second sortByGroup, I need to have many things ordered (i.e.
road casing and roads going over/under buildings.
So in this case, I believe I do need one FeatureTypeStyle per road type
and a sortbygroup, right ?
Thanks a lot for your help Andrea !
Cheers
--
Arnaud
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