How to add CQL_FILTER to WMTS layer on GeoServer?

Question

I have a wmts layer on GeoServer and I tried to add some CQL_FILTER to my request but it's not working. Whatever I added to uri, geoserver always return result but in some cases it shouldn't.

Here's my query;

'/gwc/service/wmts?REQUEST=GetTile&SERVICE=WMTS&VERSION=1.0.0&CQL_FILTER=no_vol=' +
noVol + '&LAYER=workspace:liSe-layer' +
'&STYLE=&TILEMATRIX=EPSG:900913:{z}&TILEMATRIXSET=EPSG:900913&FORMAT=application/vnd.mapbox-vector-tile&TILECOL=0{x}&TILEROW={y}'

What should I do for geoserver to see my CQL_FILTER ?

Geoserver version: 2.19.2

Answer 1

A CQL_FILTER changes the contents of the tiles, which is in turn at odds with caching.

If you really want to cache with CQL_FILTER, then you should declare it as a parameter filter in the tile caching section of your layer.

Mind, doing this means a new tile cache will be created for that layer, for each new CQL_FILTER provided in the request. While defining the parameter filter, you should probably restrict which filters you actually want to cache.

Otherwise, best to switch to the WMS protocol instead.