Hello All...I am looking for a little guidance on determining exactly how jBPM handles
persistance. I found a decent excerpt but I wonder if anyone could tell me a little more
about what the "JbpmContext" is:
Database and transactions
The basic jBPM workings do not require any persistency, it is an optional step to make
process definitions and instances persistent. This is done by surrounding the jBPM
operations with the retrieval of a "JbpmContext" and using its methods to
persist the entities.
A JbpmContext requires closing, which will close the services managed by the context,
among which the "PersistenceService", and upon closing this service, the
database transaction will be committed, or rolled back if JbpmContext.setRollbackOnly()
was called. (The PersistenceService by default starts a transaction when the database
connection is first retrieved).
So it is upon us (of course) to call JbpmContext.setRollbackOnly() in case an exception
occurs, where we don't want things to persist.
If we want to do things in the same database transaction as jBPM, we can do this inside
the same JbpmContext retrieve/close block, by getting the connection using
JbpmContext.getConnection() or the hibernate session using JbpmContext.getSession().
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