Before discussing the design phase of services, we need to go into more detail about the ways to model services. In this lecture we deal with the WSDL standard and introduce the Business Process Execution Language (BPEL) used for orchestration of webservices. These are standards that are commonly used to design services once we have our clear definition of candidate services from the analysis phase.

Lecture slides

• Orchestrating Webservices with Business Process Execution Language (BPEL)

Additional Material

• Tutorial: how to use Apache ODE for orchestration with BPEL (for those that want to try out one BPEL engine)

External Material

• A hands-on Introduction to BPEL  (for the parts non-Oracle specific)
• Video: Oracle BPEL

Software

• Apache ODE
• Eclipse
• WSO2 Developer Studio (Eclipse) - might be more convenient to use rather than to install Eclipse and the plug-ins

Specifications

• WS-BPEL 2.0 Specifications