On 19/03/2012 22:49, Dawid Nejman wrote: > Hello everyone. Hello
> I am writing because I am writing my thesis about orchestration of > geospatial (OGC) web services. For some time I was going through > available literature and I have become more and more interested in Taverna. > > What I would like to do is to dynamically create a workflow consisting > of OGC web services, execute it and get results. It sounds as if there are two distinct parts to that work (1) Representing OSC web services as "things" that can go in a Taverna workflow and (2) Dynamically creating your workflow. [snip] > Is above scenario possible? Above all, is it possible to develop plugin > to make Taverna use OGC services like SOS, WMS or WFS (just like it now > uses BioMoby, BioMart and SoapLab services) without WSDL? Yes. I looked very quickly at doing this for the BioVeL project that I am working on (http://www.biovel.eu). My idea was that if you just treat a WMS server as a normal set of REST services, then they have exactly the same services, getCapabilitis, getMap and (sometimes) getFeatureInfo. That is not really very useful. So, the service description provider part of the plugin would take the URL of a WMS server, GET the capabilities document and then create a service definition for each layer in the document. You would then be able to add a getXXXXLayer service into your Taverna workflow. During the execution of the workflow, Taverna GETs the appropriate layer from the server. An alternative approach would be to generate Taverna components that call REST underneath. Rob Haines is working on components at the moment. > I have spend > only some time on my research and I would like to avoid time wasted on > problems I could avoid. I can see no big problems in this idea. I would need to know more about what you want to put in your generated workflows. > Sorry for my language and thank you for your answer :) Your English is very good. It is an interesting problem. I hope my answer helped. > Regards, > Dawid Alan ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ taverna-hackers mailing list [email protected] Web site: http://www.taverna.org.uk Mailing lists: http://www.taverna.org.uk/about/contact-us/ Developers Guide: http://www.taverna.org.uk/developers/
