WFS Inline Schema

Wed Nov 9 14:25:58 PST 2005

Tom: Remember the idea I had about allowing the user to define an application schema for a layer and we'd just include it in the WFS describeFeature response rather than generating schema components. In that sense an application schema could be made inline but the wrapper schema document would still need to be parsed to get to it. Grasping at straws here...

Steve

>>> "Kralidis,Tom [Burlington]" <Tom.Kralidis at EC.GC.CA> 11/08/05 5:53 PM >>>
What do you mean by inline schema?  Do you mean defining the XML Schema
in the XML instance document (i.e. the GetFeature response) itself?  If
yes, that's not going to happen.  xsi:schemaLocation provides a
namespace and URL value for an XML parser to seek the XML Schema
document and validate against it.

Perhaps I don't understand your problem clearly enough.  Do you have
full examples of both the XML instance document, as well as the schema
it uses?

..Tom

> -----Original Message-----
> From: UMN MapServer Users List 
> [mailto:MAPSERVER-USERS at lists.umn.edu] On Behalf Of Simpson
> Sent: Tuesday, 08 November, 2005 16:35
> To: MAPSERVER-USERS at lists.umn.edu
> Subject: Re: [UMN_MAPSERVER-USERS] WFS Inline Schema
> 
> 
> Something along the lines of below xml.
> 
> When the namespace http://www.ttt.org/myns points to a URL 
> back on the server it came from, the XML parser in GeoTools 
> tries to GET the document but can't since I have basic auth 
> running on the server and the XML parser doesn't know how to 
> authenticate.  Getting the main WFS calls (getcapabilities, 
> getfeature, etc) to authenticate is fairly straight forward 
> (somebody gave me the code :) ), but the XML parser is deep 
> in the call stack and running in a thread, so am a little 
> apprehensive about digging into it.
> 
> Unfortunately, my bodged up XML below doesn't validate saying:
> 
> java.io.IOException: org.xml.sax.SAXException: Could not find 
> element handler for http://www.w3.org/2001/XMLSchema : schema 
> as a child of FeatureCollectionType
> 
> I am XML challenged and am currently fumbling around trying 
> to get an example schema inlined and validated.
> 
> Not sure if it is even possible?  If it was, I figured the 
> Mapserver crew had probably already done that and been there.
> 
> Thanks for any suggestions,
> Drew.
> 
> 
> 
> <?xml version='1.0' encoding="ISO-8859-1" ?> <wfs:FeatureCollection
>    xmlns:myns="http://www.ttt.org/myns"
>    xmlns:wfs="http://www.opengis.net/wfs"
>    xmlns:gml="http://www.opengis.net/gml"
>    xmlns:ogc="http://www.opengis.net/ogc"
>    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>    xsi:schemaLocation="http://www.opengis.net/wfs
> http://ogc.dmsolutions.ca/wfs/1.0.0/WFS-basic.xsd
> ">
> 
> 
> <schema
>    targetNamespace="http://www.ttt.org/myns"
>    xmlns:myns="http://www.ttt.org/myns"
>    xmlns:ogc="http://www.opengis.net/ogc"
>    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
>    xmlns="http://www.w3.org/2001/XMLSchema"
>    xmlns:gml="http://www.opengis.net/gml"
>    elementFormDefault="qualified" version="0.1" >
> 
>   <import namespace="http://www.opengis.net/gml"
>           
> schemaLocation="http://ogc.dmsolutions.ca/gml/2.1.2/feature.xsd"
> />
> 
>   <element name="eden_isles"
>            type="myns:eden_islesType"
>            substitutionGroup="gml:_Feature" />
> 
>   <complexType name="eden_islesType">
>     <complexContent>
>       <extension base="gml:AbstractFeatureType">
>         <sequence>
>           <element name="msGeometry" 
> type="gml:GeometryPropertyType" minOccurs="0" maxOccurs="1"/>
>           <element name="gid" type="string"/>
>           <element name="namex" type="string"/>
>           <element name="descr" type="string"/>
>         </sequence>
>       </extension>
>     </complexContent>
>   </complexType>
> 
> </schema>
> 
> 
> 
> 
>       <gml:boundedBy>
>       	<gml:Box srsName="EPSG:32615">
>       		<gml:coordinates>808464.020638,3346885.074396
> 809738.167216,3347815.170807</gml:coordinates>
>       	</gml:Box>
>       </gml:boundedBy>
>     <gml:featureMember>
>       <myns:eden_isles>
>         <gml:boundedBy>
>         	<gml:Box srsName="EPSG:32615">
>         		<gml:coordinates>808464.020638,3346885.074396
> 809022.080755,3347464.191029</gml:coordinates>
>         	</gml:Box>
>         </gml:boundedBy>
>         <myns:msGeometry>
>         <gml:Polygon srsName="EPSG:32615">
>           <gml:outerBoundaryIs>
>             <gml:LinearRing>
>               <gml:coordinates>808713.217294,3347464.191029
> 809022.080755,3347334.328511 808621.962181,3346885.074396 
> 808506.138383,3346927.191969 808502.628571,3346993.878127 
> 808464.020638,3347169.368016 808657.060301,3347443.132243 
> 808713.217294,3347464.191029 </gml:coordinates>
>             </gml:LinearRing>
>           </gml:outerBoundaryIs>
>         </gml:Polygon>
>         </myns:msGeometry>
>         <myns:gid>1</myns:gid>
>         <myns:namex>xxx</myns:namex>
>         <myns:descr>ddddddddd</myns:descr>
>       </myns:eden_isles>
>     </gml:featureMember>
>     <gml:featureMember>
>       <myns:eden_isles>
>         <gml:boundedBy>
>         	<gml:Box srsName="EPSG:32615">
>         		<gml:coordinates>809130.884929,3347173.046875
> 809738.167216,3347815.170807</gml:coordinates>
>         	</gml:Box>
>         </gml:boundedBy>
>         <myns:msGeometry>
>         <gml:Polygon srsName="EPSG:32615">
>           <gml:outerBoundaryIs>
>             <gml:LinearRing>
>               <gml:coordinates>809130.884929,3347815.170807
> 809569.611437,3347815.170807 809696.331720,3347639.969565 
> 809729.800117,3347459.824281 809738.167216,3347346.709801 
> 809390.920516,3347173.046875 809130.884929,3347309.759927 
> 809130.884929,3347815.170807 </gml:coordinates>
>             </gml:LinearRing>
>           </gml:outerBoundaryIs>
>         </gml:Polygon>
>         </myns:msGeometry>
>         <myns:gid>2</myns:gid>
>         <myns:namex>yyyy</myns:namex>
>         <myns:descr>sdfasdfasdfd</myns:descr>
>       </myns:eden_isles>
>     </gml:featureMember>
> </wfs:FeatureCollection>
> 
> 
> -----Original Message-----
> From: UMN MapServer Users List 
> [mailto:MAPSERVER-USERS at LISTS.UMN.EDU]On
> Behalf Of Steve Lime
> Sent: Tuesday, November 08, 2005 2:57 PM
> To: MAPSERVER-USERS at LISTS.UMN.EDU
> Subject: Re: [UMN_MAPSERVER-USERS] WFS Inline Schema
> 
> 
> Drew: I guess I'm not sure exactly what you're asking. Do you 
> mean changing the schemaLocation to point to a fixed document 
> rather than the schema generated by the WFS server?
> 
> Steve
> 
> >>> Simpson <asimpson at I-55.COM> 11/08/05 12:24 PM >>>
> Hello,
> 
> Is it possible to inline the schema in the response from a 
> getFeature rather than the normal xsi:schemaLocation?
> 
> I am trying to avoid re-writing a bunch of GeoTools to 
> include basic authentication when parsing the getFeature.
> 
> Thanks,
> Drew.
> 