Has anyone attempted to implement a data flow representation of the process graph using
jBPM? In data flow, nodes would have inputs and outputs of different types. Output ports
of nodes could be hooked together with compatible input ports of other nodes. Then, object
instances could be "passed" from node to node throughout the graph. For example,
let's say you created a database connection in the first node of a graph and another
node later in the graph also takes a database connection as an input. Using dataflow, the
first node could declare an output that could be hooked to the input of the node later in
the graph.
I would think process variables could be used to implement this, but input and output
constructs would need to be added to the jpdl. And, the workflow engine would have to do a
little work passing the data around and type checking.
Any other thoughts? Has anyone tried to do this?
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