[Obe-developer] RE: obe

[Adrian P. <ad...@bt...>]

Jorge,
 
Thank you very much for agreeing to contribute your Hibernate repository!
I'm sure the community will be very interested in this development.

The example workflows under $OBE_HOME/examples/config/processes contain many
examples of simple activity assignment (using the XPDL <Performer> tag), but
I'm afraid none of them use the completion or assignment strategy
extensions. There is comprehensive documentation on configuring activity
completion and assignment strategies (and other XPDL extensions) at
http://obe.sourceforge.net/ext/xpdl.html.

I deferred the items you mention in order to bring OBE to its 1.0 release
for 2006, based on the belief that the community would prefer to see a
stable, documented release sooner rather than later.

The 'WfMC Sample Workflow Process' is a good example of subflow usage.

Thanks,

Adrian Price
Architect & Lead
The Open Business Engine
mailto:adr...@us...

"tenax propositi, altiora peto"

________________________________

From: Jorge Middleton [mailto:jor...@gm...] 
Sent: Tuesday, May 02, 2006 6:38 PM
To: Adrian Price
Subject: Re: obe


Adrian, thanks for the quick answer.

Yes, I am interested in contributing with you with a Hibernate-based
repository. Now I'm reading and understanding the code and for now I belive
that it easy to do.

With respect to "evaluate Assignment", I would like to see some definition
examples about process that configure Assignment, maybe an invocation of a
subprocess. 
In OBE-1.0-TODO.txt, you have pending this issue: 

D Provide examples of the full range of XPDL & OBE semantics:
        - Subprocesses
        - ActivityBlock
        - Activity Completion Strategies 
        - Workitem Assignment Strategies
        - Business Calendars
        - ForEach / While / Until Iterators

I'm only interesting in Subprocesses, Activity Completion Strategies and
Workitem Assignment Strategies samples if its posible. 

When I have a stable version, I'll give you the code. It could be posible to
do some question when I have doubts?

Thanks a lot..
Jorge.





On 5/2/06, Adrian Price <ad...@bt...> wrote: 

	Good day Jorge,
	
	I am glad to hear that OBE is of interest to you.
	
	I don't think you will have any problem with Spring and Hibernate.
OBE is
	designed to allow pluggable repository implementations for both
workflow 
	process definitions (the 'process repository') and process instances
(the
	'instance repository'). At least one OBE user that I know of has
done their
	own Hibernate-based repository implementation; in fact, at their
request I 
	made some modifications to the repository SPIs specifically to make
a
	Hibernate version easier to implement. It would have been nice to
have had
	the implementation as an open source contribution to the OBE project
but 
	unfortunately I'm told proved too hard to separate it from the rest
of their
	application.
	
	So with experience that in mind... perhaps you would like to
consider
	contributing your Spring / Hibernate repositories to the OBE
project? They 
	would be very well received - both are popular technologies that are
of
	general interest. You would need to be careful to avoid direct
dependencies
	between your repository implementations and your application,
though, so 
	that your code compiles against the OBE API / SPI alone. If you do
decide
	that you'd like to contribute, it would be preferable to use a
package like
	org.obe.server.hibernate or org.obe.server.spring. Please let us
know what 
	you think.
	
	There are some javabeans that might give you a head start: take a
look at
	
$OBE_HOME/obe/obeengine/src/org/obe/engine/persistence/memory/Basic*.java
	
	There's an example of sub-process invocation in the WfMC Sample
Workflow 
	Process - it's described in some detail in the OBE documentation
	(http://obe.sourceforge.net/examples/wfmc-sample.html). For an
example of
	activity assignment take a look at the document approval workflow 
	(http://obe.sourceforge.net/examples/document-approval.html). BTW
those URLs
	won't come up in frames just yet.
	
	I'm not sure what you mean by "evaluate Assignment", could you be
more 
	specific?
	
	Best regards,
	
	Adrian.
	
	Adrian Price
	Architect & Lead
	The Open Business Engine
	mailto:adr...@us...
	
	"tenax propositi, altiora peto"
	
	________________________________
	
	From: Jorge Middleton [mailto:jor...@gm...]
	Sent: Friday, April 28, 2006 9:39 PM 
	To: adr...@us...
	Subject: obe
	
	
	Sr. Adrian,
	
	My name is Jorge Middleton from Argentina and I'm designer of a
system that
	requires to much use of the workflow. I have studied your workflow
and I
	believe that cover all of my requirements but i have some doubts.
	
	My arquitecture is based on Spring and Hibernate and my intension is
to save 
	all stuff with Hibernate,
	It's possible to add a Repository that persist all objects with
Hibernate??
	
	
	Also I would like to know if you have more examples to see for
evaluate
	Assignment, Subprocesses, etc... 
	I saw that you have this pending, but maybe you just have
	something.OBE-1.0-TODO.txt you have this in pending state.
	
	If you can help me, I will appreciate you so much..
	Thanks in advance and sorry for my english. 
	
	Jorge L.Middleton