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

[Rémi Cura]

Function getRelated is working for getting lineal related to a given puntal
topogeom,
now I'm trying to generalize so to be able to get any topogeom related to
any topogeom, whatever the feature_type.

Cheers,

Rémi


2013/10/22 Rémi Cura <remi.cura at gmail.com>

> 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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>>
>
>
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