Ruben,
I have the answer: your polygon is not closed. I do not have a
reference, but please see the examples here, which show that for
polygons, the last and first point must have the same coordinates:
http://en.wikipedia.org/wiki/Well-known_text
In my unit test fixture for a GeoSciML 3.0rc1 MappedFeature, which has
property gsml:shape that is a GML 3.2 GeometryPropertyType, I changed
the mapping for gsml:shape to:
<AttributeMapping>
<targetAttribute>gsml:shape</targetAttribute>
<idExpression>
<OCQL>strConcat('shape.', getId())</OCQL>
</idExpression>
<sourceExpression>
<OCQL>'POLYGON((268926 4810180, 268926 4829560, 296474 4829560, 296474
4810180, 268926 4810180))'</OCQL>
</sourceExpression>
<targetAttributeNode>
gml:MultiSurfacePropertyType
</targetAttributeNode>
</AttributeMapping>
Note that I added the first point of your polygon again at the end to
close it.
The corresponding fragment from the WFS response is:
<gsml:shape>
<!--#shape.mf.1-->
<gml:MultiSurface gml:id="shape.mf.1">
<gml:surfaceMember>
<gml:Polygon>
<gml:exterior>
<gml:LinearRing>
<gml:posList>268926.0 4810180.0 268926.0 4829560.0 296474.0 4829560.0
296474.0 4810180.0 268926.0 4810180.0</gml:posList>
</gml:LinearRing>
</gml:exterior>
</gml:Polygon>
</gml:surfaceMember>
</gml:MultiSurface>
</gsml:shape>
This is almost correct.
One remaining problem is that there is no gml:id on the inner
gml:Polygon, making the response schema-invalid. I have created a Jira
issue for this defect:
https://jira.codehaus.org/browse/GEOT-3824
Justin, how should we modify the encoder to allow gml:id to be placed on
every geometry nested inside the top-level geometry? Geometries are
opaque to app-schema.
Kind regards,
Ben.
On 24/08/11 14:52, Ruben Velasco Vega wrote:
> Hi Ben,
>
> I tried that solution, using just one attributeMapping element:
>
> <AttributeMapping>
> <targetAttribute>
> gml:domainSet
> </targetAttribute>
> <sourceExpression>
> <OCQL>'POLYGON((268926 4810180, 268926 4829560, 296474 4829560,
> 296474 4810180))'</OCQL>
> </sourceExpression>
> <targetAttributeNode>
> gml:MultiSurfacePropertyType
> </targetAttributeNode>
> </AttributeMapping>
>
> But it didn't work and I got the same behavior.
> It also didn't work using the geometry column of a shapefile.
>
> I think I'll try to debug GeoServer + app-schema source code to see if it
> helps me to understand how this works.
>
> I'll let you know if I make any progress.
>
> Best regards.
>
> Ruben Velasco.
>
> -----Mensaje original-----
> De: Ben Caradoc-Davies [mailto:[email protected]]
> Enviado el: miércoles, 24 de agosto de 2011 0:45
> Para: Ruben Velasco Vega
> CC: [email protected]
> Asunto: Re: [Geoserver-users] App-Schema: Mapping gml:AbstractGeometry
>
> Ruben,
>
> you have two attributeMapping elements for one targetAttribute. Please
> try merging them into a single element containing one targetAttribute,
> one targetAttributeNode, and one sourceExpression. Normally separate
> elements are used because the property element has a path one step
> shorter, but I suspect your mapping is almost correct because geometry
> properties are handled differently.
>
> I have never tried to use CQL to deliver a literal geometry in this way.
> Please let us know if it works! (I am in a conference [ISDE7] today and
> tomorrow and cannot test your mapping until Friday.)
>
> Kind regards,
> Ben.
>
> On 23/08/11 20:20, Ruben Velasco Vega wrote:
>> Hi,
>>
>> First of all let me put you in situation. I’m working on the mapping of the
>> INSPIRE Annex II Land Cover schema. I’m using GeoServer 2.2 + app-schema. I
>> tried GS 2.1, but I moved to 2.2 when I read this issue:
>> http://jira.codehaus.org/browse/GEOS-4496
>>
>> I need to map the attribute “gml:domainSet” which has this definition:
>>
>> <element name="domainSet" type="gml:DomainSetType">
>> <annotation>
>>
>> <documentation>…</documentation>
>> </annotation>
>> </element>
>> <complexType name="DomainSetType">
>> <sequence minOccurs="0">
>> <choice>
>> <element
>> ref="gml:AbstractGeometry"/>
>> <element
>> ref="gml:AbstractTimeObject"/>
>> </choice>
>> </sequence>
>> <attributeGroup
>> ref="gml:OwnershipAttributeGroup"/>
>> <attributeGroup
>> ref="gml:AssociationAttributeGroup"/>
>> </complexType>
>>
>>
>> I want to use an explicit polygon so I wrote the mapping this way:
>>
>>
>> <AttributeMapping>
>> <targetAttribute>
>>
>> gml:domainSet
>> </targetAttribute>
>> <targetAttributeNode>
>>
>> gml:MultiSurfacePropertyType
>> </targetAttributeNode>
>> </AttributeMapping>
>>
>> <AttributeMapping>
>> <targetAttribute>
>> gml:domainSet
>> </targetAttribute>
>> <sourceExpression>
>> <OCQL>'POLYGON((268926 4810180,
>> 268926 4829560, 296474 4829560, 296474 4810180))'</OCQL>
>> </sourceExpression>
>> </AttributeMapping>
>>
>> When I make this request:
>> http://localhost:8080/geoserver/wfs?request=GetFeature&typeName=lcs:LandCoverSurfaceCoverage&outputFormat=text/xml;%20subtype=gml/3.2
>>
>> I get this response:
>>
>> <wfs:FeatureCollection xmlns:wfs="http://www.opengis.net/wfs/2.0"; ...
>> <wfs:member>
>> <lcs:LandCoverSurfaceCoverage gml:id="land_cover_coverages.1">
>>
>> [DOMAINSET SHOULD BE HERE]
>>
>> <cvgvp:domainExtent>
>> <gmd:EX_Extent>
>> …
>> …
>>
>> In the GeoServer log (with the GEOTOOLS_DEVELOPER_LOGGING.properties profie)
>> I find this pair of lines that maybe related to this problem:
>>
>> 2011-08-23 13:11:09,550 DEBUG [org.geotools.xml] - AbstractFeature is
>> abstract
>> 2011-08-23 13:11:09,552 DEBUG [org.geotools.xml] - Property
>> http://www.opengis.net/gml/3.2:domainSet not found but minoccurs> 0
>>
>> If I remove the “targetAttributeNode” of the mapping, I get this output:
>>
>> <wfs:FeatureCollection xmlns:wfs="http://www.opengis.net/wfs/2.0"; ...
>> <wfs:member>
>> <lcs:LandCoverSurfaceCoverage gml:id="land_cover_coverages.1">
>> <gml:domainSet/>
>> <cvgvp:domainExtent>
>> <gmd:EX_Extent>
>> <gmd:geographicElement>
>> …
>> …
>>
>> And in the log file I only get this line:
>>
>> 011-08-23 13:30:40,111 DEBUG [org.geotools.xml] - AbstractFeature is abstract
>>
>>
>> I have a similar problem with the geometry attribute of each element of this
>> coverage using the “the_geom” column of a shapefile, but I think this one is
>> more simple.
>>
>> I hope I’ve explained it right and someone can help me. Thank you in advance.
>>
>> Rubén Velasco
>>
>>
>> [http://www.gijon.eu/Imagenes/correo/pie_correo.jpg]
>>
>>
>>
>>
>
--
Ben Caradoc-Davies <[email protected]>
Software Engineering Team Leader
CSIRO Earth Science and Resource Engineering
Australian Resources Research Centre
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