Re: [wsbpel] issue 111.1: Fixing up extensibility syntax in BPELby using <annotation> pattern

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

Hi Bernd,

Actually after more consideration, I am not sure we should use <extension> because I believe it has created confusion already between Issue 92 and Issue 111.1.

Issue 92 uses <extension> for extension usage declaration at the <process> or <scope> level. That is, what extension is used and whether it MUST be understood.

Issue 111.1 is about the extension / annotation itself at any Extensible BPEL construct. E.g. <assign>, <sequence> and etc. E.g. making <assign> transaction-aware.

Unless Issue 92 changes the wording from <extension> to <declareExtension>, I would not try to re-use <extension> for Issue 111.1 (instead of I would use <annotation>.)

Thanks!


Regards,
Alex Yiu


Eckenfels. Bernd wrote:

Hello,

 

I am strongly in favor of an <extension> element as suggested by Assaf. It is easier to scan and does not overload the annotation meaning. If we make it also repeatable, we can have the standard attributes on it, for each feature/extension:

 

<process>

  <extension mustUnderstand="yes" xmlns:xxx="http://example"><xxx:timeout>10</xxx:timeout></extension>

  <extension mustUnderstand="no" xmlns:xxx="http://example"><xxx:optimizeFor>speed</xxx:optimizeFor></extension>

...

 

Greetings

Bernd

 

---

From: Alex Yiu [mailto:alex.yiu@oracle.com]
Sent: Saturday, March 05, 2005 1:13 AM
To: wsbpel@lists.oasis-open.org
Cc: Tony Fletcher; Assaf Arkin; alex.yiu@oracle.com
Subject: Re: [wsbpel] issue 111.1: Fixing up extensibility syntax in BPEL by using <annotation> pattern

Hi, all,

(Tony, thanks for adding this sub-issue.)

Continue the discussion thread with Assaf ...

There are some minor comestic preference choices:

[A] Current proposal:
<annotation>
<documentation> anything goes </documentation>*
xsd:any*
</annotation>

[B] Matching XSD Syntax exactly:
<annotation>
<documentation> anything goes </documentation>*
<appinfo source="URI"?> xsd:any </appinfo>*
</annotation>

[C] Renaming <annotation> to <extension>: (suggested by Assaf)
<extension>
<documentation> anything goes </documentation>*
xsd:any*
</extension>


Personally, I have not-so-strong preference order [A], [C] and [B].

Please voice your preference. We would try to vote on this relatively easy issue on F2F.


Thanks!



Regards,
Alex Yiu