Automatically create not-yet-existing attribute on WFS-T (insert, update)

[jirik]

No description provided.

[jirik]

We should support all WFS versions as GeoServer:

• WFS 1.0
• WFS 1.1, documentation of Transaction
• WFS 2.0

Sample requests for WFS 1.0:

• Insert
• Update

There is no Replace action in WFS 1.

The main difference between WFS 1.0 and WFS 1.1 is that it uses different versions of GML: 2 and 3. GML 3 is backwards compatible with GML 2. For this issue, we can treat WFS 1.0 and WFS 1.1 in the same way.

[jirik]

@index-git Sample WFS request from client:

Request URL: https://example.cz/geoserver/user_1/wfs
Request Method: POST
Status Code: 200 
Remote Address: 88.86.113.227:443
Referrer Policy: no-referrer-when-downgrade

<Request-Headers>
:authority: example.cz
:method: POST
:path: /geoserver/user_1/wfs
:scheme: https
accept: application/json, text/plain, */*
accept-encoding: gzip, deflate, br
accept-language: sk-SK,sk;q=0.9,cs;q=0.8,en-US;q=0.7,en;q=0.6
cache-control: no-cache
content-length: 691
content-type: application/xml
origin: https://example.cz
pragma: no-cache
referer: https://example.cz/map1?hs_x=1661994.736015416&hs_y=6111640.741218487&hs_z=5&visible_layers=OpenStreetMap;vrstva1&hs_panel=draw
sec-fetch-dest: empty
sec-fetch-mode: cors
sec-fetch-site: same-origin
user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36
</Request-Headers>

<Transaction xmlns="http://www.opengis.net/wfs" service="WFS" version="1.1.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd">
    <Insert>
        <drawlayer xmlns="http://user_1">
            <wkb_geometry>
                <Polygon xmlns="http://www.opengis.net/gml" srsName="EPSG:3857">
                    <exterior>
                        <LinearRing srsName="EPSG:3857">
                            <posList srsDimension="2">2120209.191811929 7362137.75957741 2083519.4182350442 7129769.193590474 2474877.003055147 7027853.106113216 2568639.7079879395 7378444.375375272 2120209.191811929 7362137.75957741</posList>
                        </LinearRing>
                    </exterior>
                </Polygon>
            </wkb_geometry>
        </drawlayer>
    </Insert>
</Transaction>

[index-git]

I see a big difference in a way, how user and layer are identified. Maybe this is alternative way for all types of queries.