1. What’s new in WS-BPEL 2.0?
Last Modified: Aug 30, 2006

2. What’s new in WS-BPEL 2.0? Data Access [#1]
Introduce XSD complex-type variable
Simplify xpath expression by leverage “$” syntax,
Simplify message access on WSDL message
Treat a single part doc-literal message as an element
Map a multiple part WSDL message to XML-based variables directly
Clarification of <copy> operation behavior under <assign>
Add an “keepSrcElement” option to <copy> to deal with XSD substitution group or choice

3. What’s new in WS-BPEL 2.0? Data Access [#2]
Introduce extension assign operation under <assign>
Introduce a standardized XSLT 1.0 function used within xpath expression
Clarification of XML data validation model
Introduce validate optional to <assign>
Add <validate> activity
Introduce “inline” variable initialization at the point of variable declaration

4. What’s new in WS-BPEL 2.0? Scope Model
Clarification of Compensation Model
New scope snapshot semantics
Fault handling during compensation
Clarification of Interaction between Scope Isolation and Control Links (under <flow>)
Enrichment of fault catching model
Add <rethrow> activity to fault handlers
Introduce <terminationHandler>
Introduce “exitOnStandardFault” option

5. What’s new in WS-BPEL 2.0? Message Operations
Add Join-style Correlation Set – to allow multiple participants to rendezvous at the same process with a deterministic order
Add PartnerLink declaration local to a scope
Add “initializePartnerRole” switch to specify whether deployment step need to specify an endpoint reference for the callee/partner
Add “messageExchange” construct to pair up concurrent <receive> and <reply> activities

6. What’s new in WS-BPEL 2.0? New Activity
Introduce <forEach> activity
Including both serial and parallel variant
Attaching optional Early Completion condition
Introduce <repeatUntil> activity
Introduce extension activity
Syntax makeover, such as,
From <switch> to <if>-<elseif>-<else>
From <terminate> to <exit>
Differentiate different cases of <compensate> by calling them <compensate> and <compensateScope>

7. What’s new in WS-BPEL 2.0? Misc. Improved event handler
Added “repeatEvery” alarm feature
Clarified resources resolution works (e.g. variable, partnerLink)
Add formal <documentation> support
New extension directive to specify what extension must be understood
Add <import> support to import WSDL and XSD formally

8. What’s new in WS-BPEL 2.0? Abstract Process
Clarification of model for Abstract Process and its usage patterns
Introduce Abstract Profile concept to address different needs in Abstract Processes, two example profiles:
Observable Behavior
Process Template

9. What’s new in WS-BPEL 2.0?