
182 Geographical Information Systems: Trends and Technologies
WS-BPEL is supported by various workfl ow enactment engines either
commercial like ActiveVOS
15
or open source based implementations such
like Apache ODE.
16
Interested readers can fi nd more information on the
primer document
17
and in Vasiliev (2007).
Fig. 3. Graphical representation of a WS-BPEL process.
Fig. 4. XML description of the WS-BPEL process in Fig. 3.
15
http://activevos.com/products/activevos/overview
16
Apache ODE (Orchestration Director Engine), http://ode.apache.org/
17
http://docs.oasis-open.org/wsbpel/2.0/Primer/wsbpel-v2.0-Primer.htm
01 <?xml version = “1.0” encoding = “UTF-8” ...