[z3-five] Adaption of workflow tool

[Dennis Schulz]

Hello Plone List,

I have a database driven application that creates temporary mapped 
objects not intended to be persistent content types (mainly Zope 3 with 
Alchemist Product)
That worked quite well until now, but completly without workflow.
Now I would like to give workflow to these objects. (well I have to, 
that application depends heavily on it)
As all my users and groups are mapped from LDAP inside Plone, so it 
would be nice to use the Plone workflow.

To achieve this, I will have use some kind of persistent proxy object to 
store the workflow state and the reference.

I looked at Zope 3 ways of doing this, means to have a persistent 
annotation with workflow state and IKeyReference adapter that refers to 
a resolvable url and the unique database key.
But the bad and messy local utility and annotation support of Zope 2.9 
brought me out of this track................I think zope 2.9 is not 
mature enough to support this. dont even know if 2.10 is.

Now I found this document and have a look at the way the CPS proxy 
object is done, but it also relies on portal types:
http://www.nuxeo.com/docs/europython2004/cps_proxies_workflows_events.pdf

So my question is, has anyone done an adaption of plone workflow that 
does not use a portal type, but maybe a OFS.SimpleItem (that just stores 
the reference to the data base and workflow state) or can point me to 
additional material?

I dont know if this solution is good style and easily possible in any 
way, any additional help or recommendations would be appreciated.

If such an adaption is not easily possible, the fallback solution is to 
write my own little workflow engine, but I would weep a litte doing this.

Dennis