Re: [wsbpel] Issue - 97 - Optional Variable References in AbstractProcesses

[Alex Yiu <alex.yiu@oracle.com>]

Hi Deiter,

This is Alex, working with Paco and others on Issue 24 also.
Yes, I also think that we need to add extra text to describe the 
optional variable references in onMessage/onEvent in Chapter 15 for 
Abstract BPEL.

However, one question for clarification though: does the BPEL XML Schema 
already mark the variable optional for onMessage? Do we need to make 
other changes here for "tOnMessage" type?  or other parts of BPEL Schema?

---------------------
    <complexType name="tOnMessage">
        <complexContent>
            <extension base="bpws:tExtensibleElements">
                <sequence>
                    <element name="correlations" 
type="bpws:tCorrelations" minOccurs="0"/>
                    <group ref="bpws:activity"/>
                </sequence>
                <attribute name="partnerLink" type="NCName" use="required"/>
                <attribute name="portType" type="QName" use="required"/>
                <attribute name="operation" type="NCName" use="required"/>
                <attribute name="messageType" type="QName" use="required"/>
                <attribute name="variable" type="NCName" use="optional"/>
            </extension>
        </complexContent>
    </complexType>
-----------------------------

If I miss some background context here and ask a dumb question, apology 
in advance. :-)

Thanks!


Regards,
Alex Yiu





Dieter Koenig1 wrote:

>Proposed resolution for Issue 97: For abstract processes (only for abstract
>processes!), make variable references optional in the <onMessage> and
><onEvent> elements. Change the BPEL XML schema in order to make the
>variable reference optional in these two places. Add explanatory text to
>chapter 15.
>
>Rationale: It is permissible, in abstract processes, to omit the variable
>reference attributes from the <invoke/>, <receive/>, and <reply/>
>activities. Consequently, this must apply to <onMessage> and <onEvent> as
>well.
>
>Kind Regards
>DK
>
>
>
>
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