SeaDataNet Web ServicesSeaDataNet Web Services

Roy Lowry

British Oceanographic Data Centre

SeaDataNet Training CourseSeaDataNet Training Course

OverviewOverview

• Web Services deployed or under development

BODC Maris

• Plans for Web Service use in SeaDataNet

BODC Web ServicesBODC Web Services

• Vocabulary Server

Provides access to a large number of controlled vocabularies managed by BODC on behalf of projects such as SeaDataNet, NERC DataGrid and MarineXML

API is documented at http://www.bodc.ac.uk/products/web_services/vocab/

Test client available at http://vocab.ndg.nerc.ac.uk/client/vocabServer.jsp

Maris client application available at http://seadatanet.maris2.nl/v_bodc_vocab/welcome.asp

BODC Web ServicesBODC Web Services

• Marsden Square to Coverage Converter

Converts this:25 26 (a list of Marsden Square numbers)

To this:<Spatial_Coverage>

  <Southernmost_latitude>0.0</Southernmost_latitude>   <Northenmost_latitude>10.0</Northenmost_latitude>   <Westernmost_longitude>100.0</Westernmost_longitude>   <Easternmost_longitude>120.0</Easternmost_longitude>   </Spatial_Coverage>

API documented at http://www.bodc.ac.uk/products/web_services/msq2cov/

Test client available at http://grid.bodc.nerc.ac.uk/bodc/MSQRequest.html

Maris Web ServicesMaris Web Services

A Web Service interface to the EDMO catalogue (SeaDataNet organisation address book) has been developed by Maris

Documentation available at:http://seadatanet.maris2.nl/ws/ws_edmo.asmx

WSDL available athttp://seadatanet.maris2.nl/ws/ws_edmo.asmx?

wsdl

Web Service PlansWeb Service Plans

• Web Services provide an excellent technical solution for distributed data systems

• Metadata or data access service is deployed at each node

• Applications simply poll each instance of the service

• Service client code can be embedded into any kind of application – web browser display, data visualisation tool, numerical model and so on

• Therefore well-suited to the needs of SeaDataNet

Web Service PlansWeb Service Plans

• The SeaDataNet Technical task Team has already decided to post Web Services as interfaces to the metadata repositories

• Once we develop the design architecture I am certain web services will be developed for AAA (security) and data delivery

That’s All Folks!That’s All Folks!

Questions or the Bar?