[postgis-users] [postgis-devel] linking 2 topogeometries of different nature

[Rémi Cura]

OK,

for my private function I don't expect several topogeom columns in one
table.
I can correct the getlayerid function but I don't think other people than
me need it.

For the GetRelated, I have a working query and I'm now trying to make it a
plpgsql function

Cheers,
Rémi-C


2013/10/22 Sandro Santilli <strk at keybit.net>

> On Tue, Oct 22, 2013 at 05:17:55PM +0200, Rémi Cura wrote:
> > I'm sorry for being so disorganized,
> > I lack experience with postgis_topology.
> >
> > It is only the 3d function I write for it.
> >
> > I was supposing you would need the layer_id in case there are multiple
> > topogeom columns in one table.
> >
> > Still I don't see a use case for having multiple topogeom columns in the
> > same table, even if I do use multiple geom columns for one table
> sometimes.
> >
> > I totally agree with your others conclusions and proposed signature
> > SET OF topogeometry GetRelatedLineal(
> >            a_source_lineal_topogeom TOPOGEOMETRY,
> >            a_target_puntal_topogeom_layer_id INT )
>
> Note that there's no problem with having multiple TopoGeometry columns in
> the same table, as long as you reference a each column (layer) by the
> "topology_id"/"layer_id" pair (topology.layer primary key).
>
> > I don't like to put layer_id directly as input in function because it is
> > not a number user fixed.
>
> In that case you can specify (schema_name, table_name, feature_column),
> which _also_ identifies rows in topology.layer.
>
> > I think I can live with that as I wrote a function to get layer id from
> the
> > topogeom name :
> > public.rc_getlayerid(layer_name text, layer_schema text DEFAULT ''::text)
>
> Missing a column name here ?
>
> --strk;
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