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Orchestration of Geospatial Processes with RichWPS – a Practical Demonstration

Authors
Ziegenhagen, Dennis (Osnabrück University of Applied Sciences)
Search for Dennis Ziegenhagen in Research Programmes Information System
Kohlus, Jörn (Schleswig-Holstein’s Government-Owned Company for Coastal Protection, National Parks and Ocean Protection)
Search for Jörn Kohlus in Research Programmes Information System
Roosmann, Rainer (Osnabrück University of Applied Sciences)
Search for Rainer Roosmann in Research Programmes Information System
Chapter GIS: Techniques and Applications
Volume Proceedings of the 28th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management
Conference EnviroInfo 2014 - ICT for Energy Effieciency
Oldenburg, 2014
Year 2014
Abstract of the Article
Distributed geospatial data and services can be used to form Spatial Data Infrastructures (SDI).
Current technological developments enable SDI to process large amounts of geospatial data. In
this context, Web Processing Services (WPS) can be used as an open interface standard for
accessing and executing geospatial processes. Since many SDI are based on Service-Oriented
Architectures (SOA), the orchestration of services is enabled by composing existing services. The
results are higher services, e.g. complex geospatial applications. The RichWPS research project
focuses on analysing and providing practical approaches of web service orchestration. For this,
software components are developed to build a modular orchestration environment. Real-life
examples of geospatial processing are analysed and divided into simpler, reusable sub-processes.
Using the RichWPS environment, the sub-processes are implemented and arranged as workflow
models, which are deployed to an extended WPS server and interpreted by its orchestration engine.
This enables workflows to be executed by WPS clients. This paper presents the RichWPS
environment and one of the analysed real-life scenarios. The example scenario “Macrophyte
Assessment” contains the assessment of water plants in order to report on the water’s qualitative
status. This meets requirements of the Water Framework Directive (WFD) and the Marine
Strategy Framework Directive (MSFD) of the European Union. The scenario is analysed in order
to identify elementary processes. With the use of RichWPS components these processes are
orchestrated to form an executable assessment procedure.
Pages 525 - 532
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