Mike Edwards wrote:
Luciano Resende wrote:
I noticed that Eventing/PubSub spec has been released by OSOA [1], and
I was wondering what are the plans to get that implemented ?
[1]
http://www.osoa.org/download/attachments/35/SCA_Assembly_Extensions_for_Event_Processing_and_PubSub_V1_0.pdf
Folks,
First, the Event Processing & PubSub spec on OSOA, referenced above, has
been out for some time.
In the meantime, the spec has been submitted to OASIS and is now
proposed as the major new item in the OASIS 1.2 SCA specifications.
An initial version of the 1.2 specifcation, which includes the proposed
Pub/Sub and Event Processing function, can be found here:
http://www.oasis-open.org/committees/download.php/36508/sca-assembly-1.2-spec-wd01.doc
http://www.oasis-open.org/committees/download.php/36508/sca-assembly-1.2-spec-wd01.doc
There is active debate about the Event Processing function - Issue 227
has been under lively debate in the SCA Assembly TC for about a month:
http://www.osoa.org/jira/browse/ASSEMBLY-227
http://www.oasis-open.org/committees/download.php/37273/sca-assembly-1.2-spec-wd01-issue-227.pdf
Given that Tuscany SCA Java 2.x is about supporting the OASIS version of
SCA, I suggest that our efforts should be directed at this version of
the spec. I am happy to work on this with anyone.
To kick things off:
One significant piece of hassle in doing this is how to handle the
extended XSDs - Event Processing adds
o <producer/> and <consumer/> elements to componentType
o <producer/> and <consumer/> elements to <component/> elements
o <producer/>, <consumer/> and <channel/> elements to <composite/>
and so on.
Any ideas of how to do these extensions without being disruptive will be
most appreciated.
Yours, Mike.
Tuscany SCA Java 2.0 is currently targeted at supporting the OASIS 1.1
version of the spec, which is fairly mature and stable. If we want to
support the event functionality at some stage, I would expect that to
happen in a future release of Tuscany. Depending on how disruptive the
event changes are, they might make it into the 2.x stream at some stage
or they might be part of Tuscany SCA Java 3.0.
This suggests that we might need some other place in svn (a branch?) to
do initial investigations on adding the event functionality, so that it
doesn't impact mainstream 2.0 activity.
Simon
