SOA with SAP XI 3.0

Hey,
I would like to use the concept of SOA in SAP XI. We have a lot of design objects and
the target ist to encapsulate processes to gain reusable objects.
Normally I would say: Wait until NW 7.1 with repository/registry is available, but
the customer wouldn't migrate nor wait
So without tools like repository or registry I would do following:
- encapsulate processes for reuse in own namespaces/SWCs
- create a BPM that calls this processes through web service.
I know, this is not a SOA as it should be, but main aspects have to be a clear
repository, maintainablility and reuseablity of objects. I don't
have to publish the web service in a public registry.
We also already have BPM and can't avoid them, so performance isn't an argument
against this.
How would you do a composition of encapsulate services/processes in SAP XI 3.0?
Are there some manuals für 3.0 and SOA?
I found a lot wich describe SOA in use with 7.1 but nothing with lower versions.
thanks
chris
Edited by: Christian Riekenberg on Apr 8, 2008 12:43 PM

I'm just looking for best-practise information to keep the repository clean. For
example, I'm used to save all Message-Interfaces to external systems in an own
SWC. Other SWC who have to communicate with an external system have to
inherit this "Interface"-SWC. So external Message-Interface are not created
in a specific project where it don't belong to and you can create new versions simply.
On the other hand maintanance and enhancement are much simpler because the
repository is tidy up.
Perhaps there are some other hints for keeping overview even if more XI projects are
involved.
On the other hand I would like to know if anyone have created a kind of little SOA
where a BPM calls web serivces of XI which encapsulate services.
For example: Every of our integration processes in XI do a database lookup. Instead
of creating this lookup again and again and again, I would like to create an own web service
in XI and call this web service from every integration process. Does it make sense?
Does anyone did something like this?
thanks
chris

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