Hi,
Not sure if this is exactly what you are looking for.
Your Layers, Ive no idea what database type you are using, but on
PostgreSQL/PostGIS you can put in geometry Constraints using
ALTER TABLE public."Table_Name"
and one of the following, depending on what Geometry type you are
looking at.
ADD CONSTRAINT enforce_geotype_geom CHECK (geometrytype(geom) =
'MULTIPOLYGON'::text OR geom IS NULL);
ADD CONSTRAINT enforce_geotype_geom CHECK (geometrytype(geom) =
'POLYGON'::text OR geom IS NULL);
ADD CONSTRAINT enforce_geotype_geom CHECK (geometrytype(geom) =
'POINT'::text OR geom IS NULL);
ADD CONSTRAINT enforce_geotype_geom CHECK (geometrytype(geom) =
'LINESTRING'::text OR geom IS NULL);
I hope this helps
Reagrds,
Richard
On 30/06/2017 10:39, Lars I. Nielsen, LIFA A/S wrote:
Hi,
I’m preparing a QGIS project for a customer, and have (among other)
three layers with points, lines, and areas respectively.
I’m adapting the project from a previously made project by altering
the data connections. The databases are identical in structure, so it
works. The layers are all fetched using WFS-T.
So far I only have data in the points and areas layers, none in the
lines layer. The lines dataset (table) in the database is present, and
published as WFS (Geoserver), and all metadata (afaik) is present
(i.e. “geometry_columns”).
I would like to be able to digitize lines into the line layer, but
apparently QGIS cannot determine the topology, and (I suppose that’s
also why) I can’t add any styles via the “properties” dialog or elsewhere.
Is there any way, that I can tell QGIS that the layer should contain
line features ?
And how can I add suitable (line) styles to display the lines without
any features present ?
Using 2.18.7 (32+64) Windows
Med venlig hilsen
*
*Lars I. Nielsen, LIFA A/S
GIS-konsulent
http://website.lifa.dk/lsp.gif
*T*6313 6800 *@ *l...@lifa.dk
*D *6313 6849 *W *www.lifa.dk
*M *2492 4866
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*OPW FRM Data Management*
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