[jbpm-users] jbpm prototype findings tasks, timers and cleaning up

[Dan Oxlade]

We're currently prototyping a jBpm solution and have so far found it to
be very effective.

We are now experimenting with tasks and timers and have had to implement
a few features ourselves, I'm not sure if we are using the engine
correctly in doing this and wanted to list my experiences.

 

Tasks

We found that when leaving a task-node with multiple tasks
signal="first" we leave open tasks. We implemented an action to remove
all open tasks for this node on "node-leave". This seems to be a common
pattern for us.

 

Timers

Timer only support events at points relative to 'now' i.e "In 3 business
hours"

We have represented a timer in the process that can be dynamic; an
example is a task expiry (which links with the removal of tasks above)
driven by an external business concept.

We implemented our own CreateTimerAction wrapping the jBpm one and use a
strategy for the resolution of 'dueDate'.

This means we use an event node with a nested action (our
CreateTimerAction) to create the Timer at the appropriate place.

 

Has anyone else has a similar experience and do these concepts make
sense?

 

Kind regards,

Dan Oxlade


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