On Sun, Jan 17, 2016 at 1:19 PM, Phil Scadden <p.scadden@anonymised.com> wrote:
Thinking out loud, we could have a flag at the store level to make all
properties
nullable even if they are not... and then disallow editing on those same
tables
(since it cannot be done anymore in a predictable fashion, DFT says you can
skip an attribute, but then you cannot).... or just document that at that
point WFS-T
is not going to work reliably
The constraint of requiring not null properties to be returned regardless
of whether in property list, is only useful within the context of WFS-T.
That should be the flagging criteria. If not in a WFS-T context, then only
send properties requested. I suspect that editing is rare but querying is
common. I think OGC should consider a nogeometry switch like arcGIS server.
I agree with you, OGC did not give us a DescribeFeatureType for WFS-T and
one for basic.
DescribeFeatureType generates a XML schema that we have to abide to, at
least for GML outputs (otherwise they would be schema invalid).
Given we have only one, if we make the attributes nullable in the schema
when they are not in the db, we'll be able to ask for the property
to be removed in GetFeature, but the data will not be properly editable. If
we make it editable, then you're also forced to get it in the output...
I agree for "nogeometry", but imho it should be more general, there might
be other fields that are mandatory in the db that you
don't care for in the output. Maybe a "ignoreNonNull=true" property in the
GetFeature request that would force it to just listen
to the properties being requested, instead of also double checking what's
mandatory in the schema (and maybe add the
same param in the DescribeFeatureType backlink that we generate, so that
the output also confirms nothing is mandatory).
Just thinking out loud :-p
Cheers
Andrea
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