[Zoo-discuss] [ZOO-Discuss] FOSS4G 2010 ZOO Workshop Problem

Mon Nov 18 15:14:52 PST 2013

Hi Christian,
thanks for providing feedbacks.

I’m wondering what is the version of ZOO-Kernel you are using. Indeed, I noticed nothing wrong in both your query and the ZCFG file.

So I guess there is some issue with the ZOO-Kernel version you are using for running the workshop. May I invite you to try the following request and see if anything change [1] ?

If it solves the issue, then I would invite your to try with 1.3.0 version or SVN trunk version [2],

Hope this helps,
Best regards

[1] http://localhost/zoo/?request=Execute&service=WPS&version=1.0.0&Identifier=Buffer&DataInputs=BufferDistance=1@datatype=interger;InputPolygon=Reference@xlink:href=http%3A%2F%2Flocalhost%3A8082%2Fgeoserver%2Fows%3FSERVICE%3DWFS%26REQUEST%3DGetFeature%26VERSION%3D1.0.0%26typename%3Dtopp%3Astates%26SRS%3DEPSG%3A4326%26FeatureID%3Dstates.25@mimeType=text/xml&RawDataOutput=Result@mimeType=application/json
[2] http://zoo-project.org/site/Downloads#Fordevelopers

Gérald Fenoy
gerald.fenoy at geolabs.fr

Le 18 nov. 2013 à 16:48, Christian Rüh <christian.rueh at uni-rostock.de> a écrit :

> Hi Gerald,
> 
> ah, no need to apologize, I'm happy for your fast answer :-)
> 
> The initial error is resolved and for a query like this:
> http://localhost/cgi-bin/zoo_loader.cgi?request=Execute&service=WPS&version=1.0.0&Identifier=Buffer&DataInputs=InputPolygon=Reference@xlink:href=http%3A%2F%2Flocalhost%3A8082%2Fgeoserver%2Fows%3FSERVICE%3DWFS%26REQUEST%3DGetFeature%26VERSION%3D1.0.0%26typename%3Dtopp%3Astates%26SRS%3DEPSG%3A4326%26FeatureID%3Dstates.15
> I get a satisfying result.
> 
> However, if i want to use the OpenLayers application I run into problems (maybe the kind you suggested with "Note that with this version of the Python service you will have to use the Polygon and MultiPolygon.").
> For the request
> http://localhost/zoo/?request=Execute&service=WPS&version=1.0.0&Identifier=Buffer&DataInputs=BufferDistance=1@datatype=interger;InputPolygon=Reference@xlink:href=http%3A%2F%2Flocalhost%3A8082%2Fgeoserver%2Fows%3FSERVICE%3DWFS%26REQUEST%3DGetFeature%26VERSION%3D1.0.0%26typename%3Dtopp%3Astates%26SRS%3DEPSG%3A4326%26FeatureID%3Dstates.25&RawDataOutput=Result@mimeType=application/json
> I get the error:
> <ows:ExceptionText>
> TRACE : ('mimeType',)
> TRACE : <type 'exceptions.KeyError'>
> Unable to run your python process properly. Please check the following messages : ['  File "/usr/lib/cgi-bin/ogr_ws_service_provider.py", line 48, in Buffer\n    geometry=extractInputs(inputs["InputPolygon"])\n', '  File "/usr/lib/cgi-bin/ogr_ws_service_provider.py", line 13, in extractInputs\n    if obj["mimeType"]=="application/json":\n']
> </ows:ExceptionText>
> 
> I looked into the zcfg and it's InputPolygon there, application/json is also spelled correctly everywhere as far as I can see.
> 
> Since I haven't changed a thing in ogr_ws_service_provider.py I've only attached the Buffer.zcfg.
> 
> Cheers and thanks again,
> Christian
> 
> ________________________________________
> Von: Fenoy Gerald [gerald.fenoy at geolabs.fr]
> Gesendet: Montag, 18. November 2013 14:57
> An: ZOO-discuss
> Cc: Christian Rüh
> Betreff: Re: [ZOO-Discuss] FOSS4G 2010 ZOO Workshop Problem
> 
> Hi Christian,
> sorry for answering your email so late.
> 
> I found an issue in the ZCFG file the output was not named « Result » but « BufferedPolygon ».
> 
> I guess that once you updated the ZCFG file everything should run smoothly.
> 
> Note that with this version of the Python service you will have to use the Polygon and MultiPolygon.
> 
> Hope this helps you,
> Best regards,
> 
> Gérald Fenoy
> gerald.fenoy at geolabs.fr
> 
> 
> 
> Le 18 nov. 2013 à 14:51, Christian Rüh <christian.rueh at uni-rostock.de> a écrit :
> 
>> Hi Gerald,
>> 
>> thank you for the fast answer that helped me a lot :-)
>> I was able to fix the problem with your hint.
>> 
>> However, the next problem was right around the corner. After the ConvexHull and Centroid functions worked fine the Buffer function won't.
>> 
>> I get the following error:
>> <ows:ExceptionText>
>> TRACE : ('Result',)
>> TRACE : <type 'exceptions.KeyError'>
>> Unable to run your python process properly. Please check the following messages : ['  File "/usr/lib/cgi-bin/ogr_ws_service_provider.py", line 54, in Buffer\n    outputResult(outputs["Result"],rgeom)\n']
>> </ows:ExceptionText>
>> 
>> I've looked into keyerrors and python but wasn't able to resolve this issue. Especially since the line (54)
>> "outputResult(outputs["Result"],rgeom)"
>> was used in all the other functions as well and worked fine there.
>> 
>> I attached my Buffer.zcfg and ogr_ws_service_provider.py.
>> 
>> I really hope you can help me with this problem, too, and am thankful in advance :-)
>> 
>> Cheers and thanks,
>> Christian
>> 
>> ________________________________________
>> Von: Fenoy Gerald [gerald.fenoy at geolabs.fr]
>> Gesendet: Freitag, 15. November 2013 16:18
>> An: ZOO-discuss
>> Cc: Christian Rüh
>> Betreff: Re: [ZOO-Discuss] FOSS4G 2010 ZOO Workshop Problem
>> 
>> Hi Christian,
>> it seems that the issue is only in the Python service code.
>> 
>> I noticed a strange thing in the error message, it seems that there is a tabulation ("\t") which was inserted by mistake in the ogr_ws_service_provider.py file on line 18.
>> 
>> Check the expression on line 18 and remove any tabulation located near the "name()=\’Multipolygon\’"
>> 
>> Hope this solve your issue.
>> 
>> Best regards,
>> 
>> 
>> Le 15 nov. 2013 à 15:24, Sickboy <christian.rueh at uni-rostock.de> a écrit :
>> 
>>> Hi there,
>>> 
>>> I tried to do the above workshop
>>> (http://www.zoo-project.org/site/ZooWorkshop2010/Content) and got stuck at
>>> step 3.3.1.2 (Creating WPS compliant OGR based Web Services -> Implementing
>>> single geometry processes -> Boundary -> Python version). I wasn't able to
>>> compile the C version (I'm don't really know anything about C and Linux
>>> which might be the problem) so I went for the Python version. If I try one
>>> of the URLs given to test the process I get:
>>> <ows:ExceptionReport xsi:schemaLocation="http://www.opengis.net/ows/1.1
>>> http://schemas.opengis.net/ows/1.1.0/owsExceptionReport.xsd" xml:lan="en"
>>> service="WPS" version="1.0.0">
>>> <ows:Exception exceptionCode="NoApplicableCode">
>>> <ows:ExceptionText>
>>> TRACE : xmlXPathEval() failed
>>> TRACE : <class 'libxml2.xpathError'>
>>> Unable to run your python process properly. Please check the following
>>> messages : ['  File "/usr/lib/cgi-bin/ogr_ws_service_provider.py", line 18,
>>> in Boundary\n
>>> geometry=createGeometryFromWFS(inputs["InputPolygon"]["value"])\n', '  File
>>> "/usr/lib/cgi-bin/ogr_ws_service_provider.py", line 7, in
>>> createGeometryFromWFS\n
>>> res=ctxt.xpathEval("/*/*/*/*/*[local-name()=\'Polygon\' or
>>> local-\tname()=\'MultiPolygon\']")\n', '  File
>>> "/usr/lib/pymodules/python2.6/libxml2.py", line 4894, in xpathEval\n    if
>>> ret is None:raise xpathError(\'xmlXPathEval() failed\')\n']
>>> </ows:ExceptionText>
>>> </ows:Exception>
>>> </ows:ExceptionReport>
>>> 
>>> There seems to be a problem with the libxml2 library but even with googling
>>> I was not able to fix it.
>>> 
>>> The Geoserver was started when the document told me to (but this does not
>>> matter as I've tested it without a running Geoserver, too).
>>> I'm using the OSGeo Live disk 3.0 because the README
>>> (http://zoo-project.org/trac/attachment/wiki/ZooWorkshop2010/Content/README)
>>> indicated that.
>>> I guess it ain't important but I'm using it with VMWare Player 5 on Windows
>>> 7 x64.
>>> 
>>> Help would be greatly appreciated since I'm needing this for a seminar with
>>> my students in 2 weeks.
>>> 
>>> Cheers and thanks in advance for any help,
>>> Christian
>>> 
>>> 
>>> 
>>> --
>>> View this message in context: http://zoo-discuss.1049523.n5.nabble.com/FOSS4G-2010-ZOO-Workshop-Problem-tp5706683.html
>>> Sent from the ZOO-Discuss mailing list archive at Nabble.com.
>>> _______________________________________________
>>> Zoo-discuss mailing list
>>> Zoo-discuss at gisws.media.osaka-cu.ac.jp
>>> http://gisws.media.osaka-cu.ac.jp/mailman/listinfo.cgi/zoo-discuss
>> 
>> 
>> 
>> Gérald Fenoy
>> gerald.fenoy at geolabs.fr
>> 
>> <Buffer.zcfg><ogr_ws_service_provider.py>
> 
> <Buffer.zcfg>

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