[ZOO-Discuss] About ZOO-Project

[Gérald Fenoy]

Dear Ninsawat-san and ZOO Tribe Members,
sorry for the delay.

As sometime a simple example could tell more than long discussions. I  
give here a sample of using Chaining in ZOO Kernel (and in WPS in  
general). Since you can use a reference, you are able to use the  
result of another process.

For instance, you could run SymDifference process using a GML entity  
as input 1 and for the second : the result fetch by a Buffer process  
for the same entity. As presented in this example :

<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
../wpsExecute_request.xsd">
    <ows:Identifier>SymDifference</ows:Identifier>
    <wps:DataInputs>
     <wps:Input>
      <ows:Identifier>InputEntity1</ows:Identifier>
      <wps:Reference xlink:href="http://carto.languedoc-roussillon.ecologie.gouv.fr/webservices/wfs/diren_general/?VERSION=1.1.0&service=WFS&request=GetFeature&typename=Znieff1&maxfeatures=1 
"/>
    </wps:Input>
    <wps:Input>
     <ows:Identifier>InputEntity2</ows:Identifier>
     <wps:Reference mimeType="application/json" xlink:href="http://shilpa.media.osaka-cu.ac.jp/zoo/?request=Execute&service=WPS&version=1.0.0&Identifier=Buffer&DataInputs=BufferDistance=100@datatype=interger@uom=meter;InputPolygon=Reference@xlink:href=http%3A%2F%2Fcarto.languedoc-roussillon.ecologie.gouv.fr%2Fwebservices%2Fwfs%2Fdiren_general%2F%3FVERSION%3D1.1.0%26service%3DWFS%26request%3DGetFeature%26typename%3DZnieff1%26maxfeatures%3D1&RawDataOutput=BufferedPolygon 
"/>
    </wps:Input>
   </wps:DataInputs>
   <wps:ResponseForm>
   <wps:ResponseDocument>
    <wps:Output>
     <ows:Identifier>Result</ows:Identifier>
    </wps:Output>
   </wps:ResponseDocument>
  </wps:ResponseForm>
</wps:Execute>

  Please note that this is not a so interesting example. This sample  
request is just here to materialize how we can already Chain processes  
just using the WPS through ZOO Kernel.

You can use this kind of request to feed the textarea of this web  
page : http://shilpa.media.osaka-cu.ac.jp/demo/ 
test_services_post1.html , then press the "run using XML Request"  
button to run the process.

Note there is still some limitation, which should disappear soon when  
we fully support the method, Header, Body and BodyReference for  
InputReference as requested.

Hope to hear from you soon,
best regards

Le 30 oct. 2009 à 09:43, Sarawut Ninsawat a écrit :

> Dear Venka-sensei
>
> Please add me in mailing list as well. I will try to catch up all  
> stuff
> in zoo project.
> About chaining supported, I think it is better to check W3C Web  
> Service
> Orchestration standard. I think it is require exchange  
> message ....etc also.
>
> Best regards
>
> Sarawut
>
> Venkatesh Raghavan wrote:
>> After the ZOO presentation at FOSS4G-2009,
>> Jody Garret (who was chairing the session)
>> suggested ti take a look at YAWL for
>> service chaining.
>>
>> YAWL is supposed to be a workflow engine.
>> http://www.yawl-system.com/
>>
>> Anybody suggest to start looking into YAWL?
>> Gerald says that ZOO Kernel already supports
>> service chaining. I am not sure I have entirely
>> understood what Gerald has to say about Service
>> Chaining in ZOO.
>>
>> Venka
>>
>> Venkatesh Raghavan wrote:
>>> Hi Jachym,
>>>
>>> Jachym Cepicky wrote:
>>> ...
>>>> I'm affraid, I would not be able to come to Montpellier :-)
>>>> You can add me to the mailing list, if you think, it will be  
>>>> useful,
>>>> but
>>>> currently, I would not expect much input from mine side.
>>>
>>> I have subscribed you to the ML.
>>> Sharing your experience from time
>>> to time about PyWPS would be a great
>>> input for the ZOO Project.
>>>
>>> Thanks
>>>
>>> Venka
>>>
>>
>>
>
>
> -- 
> Sarawut NINSAWAT
>
> GEO Grid Research Group
> Information Technology Research Institute
> National Institute of Advanced Industrial Science and Technology  
> (AIST)
>
> Umezono 1-1-1, Tsukuba 305-8568, Japan
> E-mail: sarawut.ninsawat at aist.go.jp
> Tel: 81-29-862-6702 ext. 55036
> Fax: 81-29-862-6601
>
>
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Gérald Fenoy
gerald.fenoy at geolabs.fr


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