Parallel steps

We have downlowed OSWorkflow 2.1.0, and have a question about how to run a
particilar workflow.

Workflow actors: chairman, reviewer

Workflow process:
1. Initialize review board  (done by chairman)
       - task is to create reviewer list, one entry per reviewer
2. Review document  (done by reviewer)
     - This is a split workflow, one entry per reviewer in reviewer list
    - Each reviewer has a due date associated with their task
    -  Each individual reviewer either rejects or accepts the document
   - The chairman can 'proxy-vote' for individual reviewers
3. Finish review (done by chairman)
   - This is a join step, completed when all reviews are complete

I see within OSWorkflow 2.1.0 that a split will work for distinctly-named
steps.

Some function-related questions...
How can I do a split a using the same step, with a separate step instance
per member of an input list?
Do I have to extend AbstractWorkflow?  Has someone done this already?
How would I set a due date for a step/owner combination?

Some API-related questions...
Is there an easy way to find the steps associated with a particular owner?
Is there an easy way to find the available actions associated with a
particular step and owner combination?
Could we add an sub-interface to Workflow that returns objects instead of
primitive ids?




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