Version 20 (modified by djay, 9 years ago)

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ZOO Project WPS compliancy testing

In response to the report named CIP-ICT-PSP-2009-3 - 250474 made by 52°North for the client/project : BRIdging SErvices, Information and Data for Europe.

Indeed, some strange bahaviour of the ZOO Kernel was pointed out in this report. So ZOO Tribe decided to answer to this report by making his own report about ZOO Project compliancy testing using the same way as in the report.

First note about the report we are currently writing, we weren't able to use XMLSpy 2007 Proffessional version as no more Evaluation version is available, so we used the XMLSpy 2011 Proffessional one as we can use it for an evaluation period of 30 days.

All the following requests give documents which are valid (using XMLSpy 2011 Proffessional) against the used schemas.

GetCapabilities request

In the section 5.5 of the report an error was pointed out about some unexpected metadata : namely Test attribute to the Metadata node getting the "Demo" value. This was due to wrong ZCFG files of the first Services we made in the begining of the 2009 year.

The right URL to tun this test is wrong, you would use this one :

http://zoo-project.org/cgi-bin-new/zoo_loader.cgi?REQUEST=GetCapabilities&SERVICE=WPS&version=1.0.0

The annex II linked to this section contains strangely a ProcessDescription document when it shall be a Capabilities Document instead. Maybe we don't have the final version of the report (I hope so ;)).

So for the GetCapabilities request, the Capabilities document outputed by the ZOO Kernel is Valid.

DescribeProcess request

In the section 5.11 of the report we can read that the ZOO Kernel can't handle the DescribeProcess request and output a valid ProcessDescriptions Document. Indeed the first versions of ZOO Kernel was wrong in that, but hopefully the last one, included in OSGeoLiveDVD 4.0 returns already the valid ProcessDescriptions document.

http://zoo-project.org/cgi-bin-new/zoo_loader.cgi?REQUEST=DescribeProcess&SERVICE=WPS&version=1.0.0&Identifier=Buffer

Using the url above we can confirm that ZOO Kernel is Valid for the DescribeProcess request.

Note that this request is Valid also :

http://zoo-project.org/cgi-bin-new/zoo_loader.cgi?REQUEST=DescribeProcess&SERVICE=WPS&version=1.0.0&Identifier=Buffer,Boundary,Centroid,ConvexHull,Simplify,Union,Intersection,Difference,SymDifference

Execute request

In the 5.13 section of the report you can get the requests for Execute as XML POST requests, as it is the mandatory method.

To use the XML POST requests provided in the report or easier by using copy/paste from this page, please follow this link.

section 5.17 (Synchronous call using asReference)

<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd">
<ows:Identifier>Buffer</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>InputPolygon</ows:Identifier>
<ows:Title>Playground area</ows:Title>
<wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&amp;version=1.0.0&amp;request=GetFeature&amp;typename=Znieff1&amp;maxfeatures=1"/></wps:Input>
<wps:Input>
<ows:Identifier>BufferDistance</ows:Identifier>
<ows:Title>Distance which people will walk to get to a playground.</ows:Title>
<wps:Data>
<wps:LiteralData>10</wps:LiteralData>
</wps:Data>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:ResponseDocument storeExecuteResponse="false">
<wps:Output asReference="true">
<ows:Identifier>Result</ows:Identifier>
</wps:Output>
</wps:ResponseDocument>
</wps:ResponseForm>
</wps:Execute>

section 5.18.1.4 (Synchronous call with data included)

<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd">
<ows:Identifier>Buffer</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>InputPolygon</ows:Identifier>
<ows:Title>Playground area</ows:Title>
<wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&amp;version=1.0.0&amp;request=GetFeature&amp;typename=Znieff1&amp;maxfeatures=1"/></wps:Input>
<wps:Input>
<ows:Identifier>BufferDistance</ows:Identifier>
<ows:Title>Distance which people will walk to get to a playground.</ows:Title>
<wps:Data>
<wps:LiteralData>10</wps:LiteralData>
</wps:Data>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:ResponseDocument storeExecuteResponse="false">
<wps:Output asReference="false">
<ows:Identifier>Result</ows:Identifier>
</wps:Output>
</wps:ResponseDocument>
</wps:ResponseForm>
</wps:Execute>

section 5.23 (Asynchronous call with data asReference)

<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd">
<ows:Identifier>Buffer</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>InputPolygon</ows:Identifier>
<ows:Title>Playground area</ows:Title>
<wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&amp;version=1.0.0&amp;request=GetFeature&amp;typename=Znieff1&amp;maxfeatures=1"/></wps:Input>
<wps:Input>
<ows:Identifier>BufferDistance</ows:Identifier>
<ows:Title>Distance which people will walk to get to a playground.</ows:Title>
<wps:Data>
<wps:LiteralData>10</wps:LiteralData>
</wps:Data>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:ResponseDocument storeExecuteResponse="true" status="true">
<wps:Output asReference="true">
<ows:Identifier>Result</ows:Identifier>
</wps:Output>
</wps:ResponseDocument>
</wps:ResponseForm>
</wps:Execute>

Here both statusLocation file and response are Valid.

Section Not Found (Asynchronous call with full data included)

Even if it is not mentioned in the original report, you can also use the storeExecuteReponse="true" for ResponseDocument with the asReference attribute for the Output settled to true as in the following request :

<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd">
<ows:Identifier>Buffer</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>InputPolygon</ows:Identifier>
<ows:Title>Playground area</ows:Title>
<wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&amp;version=1.0.0&amp;request=GetFeature&amp;typename=Znieff1&amp;maxfeatures=1"/></wps:Input>
<wps:Input>
<ows:Identifier>BufferDistance</ows:Identifier>
<ows:Title>Distance which people will walk to get to a playground.</ows:Title>
<wps:Data>
<wps:LiteralData>10</wps:LiteralData>
</wps:Data>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:ResponseDocument storeExecuteResponse="true" status="true">
<wps:Output asReference="false">
<ows:Identifier>Result</ows:Identifier>
</wps:Output>
</wps:ResponseDocument>
</wps:ResponseForm>
</wps:Execute>

The resulting document and the statusLocation document are both Valid.

section 5.28 (RawDataOutput test)

<wps:Execute service="WPS" version="1.0.0" xmlns:wps="http://www.opengis.net/wps/1.0.0" xmlns:ows="http://www.opengis.net/ows/1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/wps/1.0.0 http://schemas.opengis.net/wps/1.0.0/wpsExecute_request.xsd">
<ows:Identifier>Buffer</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>InputPolygon</ows:Identifier>
<ows:Title>Playground area</ows:Title>
<wps:Reference xlink:href="http://dreal-official.geolabs.fr/mapjax/webservices/wfs/dreal_lr_general/?VERSION=1.1.0&amp;version=1.0.0&amp;request=GetFeature&amp;typename=Znieff1&amp;maxfeatures=1"/></wps:Input>
<wps:Input>
<ows:Identifier>BufferDistance</ows:Identifier>
<ows:Title>Distance which people will walk to get to a playground.</ows:Title>
<wps:Data>
<wps:LiteralData>10</wps:LiteralData>
</wps:Data>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput>
<ows:Identifier>Result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>

The result is valid in the sens that it is a JSON string representing the resulting polygon.

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