[CITE-Forum] Is an empty "returnFeatureTypes" attribute valid in stored query creation?
andrea.aime at geo-solutions.it
Thu Mar 22 12:30:33 EDT 2018
a "change request" against the standard you mean? To ask clarification on
the schema valid, but problematic,
On Tue, Mar 20, 2018 at 11:59 PM, Panagiotis (Peter) A. Vretanos via
CITE-Forum <cite-forum at lists.opengeospatial.org> wrote:
> Richard at al,
> Yup! Looks like a bug ... I think a change request is order to have this
> On 2018-03-20 10:53 AM, Richard Martell via CITE-Forum wrote:
>> It does look like a bug according to the last sentence in the clause you
>> cited. Perhaps an error trying to set the attribute value from the
>> FeatureTypeList in the capabilities document or the child queries. I didn't
>> see any hints about an empty string being interpreted as "any supported
>> feature type" (although gml:AbstractFeature could play this role I suppose).
>> However, the attribute seems redundant here since the constituent queries
>> already specify the return types. What if inconsistencies occur? Perhaps as
>> a fallback the server could fill in an empty value on receipt (i.e.
>> concatenate Query/@typeNames).
>> On 2018-03-19 07:33, Andrea Aime via CITE-Forum wrote:
>>> I'm looking at a failing test that issues the following request:
>>> <CreateStoredQuery xmlns="http://www.opengis.net/wfs/2.0"
>>> service="WFS" version="2.0.0">
>>> <StoredQueryDefinition xmlns:xsd="http://www.w3.org/2001/XMLSchema"
>>> <Abstract>Returns feature representations by name. The name
>>> value must occur in a gml:name property.</Abstract>
>>> <Parameter name="name" type="xsd:string">
>>> <Abstract>Name of feature instance (required)</Abstract>
>>> <QueryExpressionText xmlns:fes="http://www.opengis.net/fes/2.0"
>>> <Query xmlns:ns42="http://cite.opengeospatial.org/gmlsf"
>>> <fes:PropertyIsLike escapeChar="\" singleChar="?"
>>> GeoServer complains about returnFeatureTypes, in particular:
>>> "StoredQuery references typeName sf:EntitéGénérique not listed in
>>> Now, the attribute is mandatory and specifications example has a non
>>> empty value (also available here:
>>> The spec does not address directly the empty value case:
>>> 22.214.171.124.2 Declaring the returned feature types
>>>> The returnFeatureTypes attribute on the wfs:QueryExpressionText
>>>> element shall be used to specify the
>>>> feature type(s) that each component query expression returns.
>>>> If more than one return feature type is listed, this indicates that
>>>> the corresponding component query
>>>> expression returns a join tuple composed of the listed feature
>>>> The returned feature type names shall be from the list of feature
>>>> type names that a server advertises in its
>>>> capabilities document (see 8.3.3).
>>> So... can anyone clarify this situation?
>> CITE-Forum mailing list
>> CITE-Forum at lists.opengeospatial.org
> Panagiotis (Peter) A. Vretanos CubeWerx Inc.
> Big Kahuna (CTO, Senior DB Developer) http://www.cubewerx.com
> Tel. 416-701-1985 Fax. 416-701-9870 pvretano at cubewerx.com
> "Smart people learn from everything and everyone. Average
> people learn from their experiences. Stupid people have
> all the answers." Socrates.
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