TMS ? If you are using GWC you may want to take a look at this issue:
https://osgeo-org.atlassian.net/browse/GEOS-8228
Basically when using vector tiles with GWC metaling needs to be deactivated.
Is not your main issue but help you get a decent cache hit :)
On 07/24/2017 12:47 PM, Dylan Parry wrote:
Hi,
I'm using TMS with the VectorTile extension rather than WFS. I believe this is
the recommended method as it simplifies the data for smaller scales and
delivers a much smaller dataset. I've had a quick look, and it seems that CQL
isn't supported by this setup :(
For now, I've found that I'm able to specify min/max resolutions in OpenLayers,
and have split the layer groups into several groups that I can turn on/off
based on the resolution. Eg. housing is a layer group, roads another etc. This
means more requests to the server, but I can live with that as the TMS is going
via GeoWebCache so it's no big strain on resources.
Thanks for your help though. Hopefully filtering support will come with time,
but the hack I'm using at the moment will do for now at least.
On 24/07/17 11:59, Paul Wittle via Geoserver-users wrote:
Hi,
I believe you can use the CQL filter parameter if you are using a GET HTTP
request but if you have a complex filter you may need to use a POST request and
the OGC filter as a parameter. I assume you need to switch to POST requests as
there is a limit on the length a URL can be and long CQL can make you hit the
limit if you are querying by polygon.
I’ve actually just been looking into it again last week as I need the filters
for WFS GetFeature requests; I’m assuming that is the service you are using for
your vector tiles.
In terms of constructing the correct filters you should consult the
documentation at http://docs.geoserver.org/latest/en/user/filter/index.html
However I don’t know how that works in terms of layergroups where you want an
entire layer to be ignored at a given scale. I don’t know if WFS even uses the
concept. I think it just returns the features within the given bbox and without
rendering dimensions I’m not sure a scale dominator would apply. Hopefully
someone else will help you there?
If the request returns a feature ID (FID) then you may be able to filter out
whole layers based on the request size in units i.e. the width and height of
your bbox.
Paul
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