Orchestrating services with BPEL ( bpelsvc | 21 hours )

Knowledge of XML, XSL and XSD, some exposure to SOAP and WSDL.

This course will give you a broad overview of all the major BPEL initiatives in the current market.

You will have an insight into the possibilities of this exciting technology.

By the end of the course you should be able to:

• Understand the key concepts of the BPEL 1.1 specification
• Be able to Learn the syntax and semantics of BPEL
• Understanding the relationship between BPEL and WSDL
• Gaining experience using BPEL by building a complex application
• Understanding which BPEL constructs are most appropriate
• Learn the best practices for developing using BizTalk or Oracle JDeveloper

Orchestrating Services

• web Service basics
• The evolution of SOAP, WSDL and UDDI
• Introducing the concepts of service orchestration
• Design principles of BPEL
• Components of the design
• Process design patterns

The Scenic tour of Process Theory

• Pi-calculus
• Petri nets
• State machines
• Activity diagrams
• BPMN and XPDL

Break the process into scopes

• How scopes are used
• Variables
• Scopes and concurrency
• Scopes and fault handling
• Transaction rollback
• Compensation

Extending the process with fault handling

• Define fault handlers for scopes
• Signal faults to the client
• Signal faults to partner services
• Inline fault handling
• Forced termination
• Suspended state usage

Add a compensation handler

• Define the scenario for compensation
• Define a compensation handler
• Invoke a compensation handler
• Rolling back a transaction
• Undoing business events

Accept more than one response from asynchronous web services

• Use pick instead of receive
• Use pick to signal faults
• Add timeouts
• Synchronous vs Asynchronous approach
• Event-driven approach

Add event handler for a scope

• Message events
• Alarm events
• Adding sensors
• Pick shape usage
• Event driven Architecture concepts

Use dynamic partner links to invoke partner services

• Define dynamic links
• Assigning partner links
• Changing partner links
• Choosing a service from the UDDI registry

Understanding correlation

• Define correlation manually
• Declare message properties
• Use of correlation sets
• More than 2 participants in a correlation
• Correlation and Asynchronous approach

Develop a complex parallel execution of activities

• Designing concurrency
• Controlling complex concurrent flows using links
• Implementing convoys
• Human workflow integration
• The newest version of BPEL previewed