Alejandro Guizar [http://community.jboss.org/people/alex.guizar%40jboss.com] replied to the discussion
"Case for using jBPM's PVM "naked"?" To view the discussion, visit: http://community.jboss.org/message/559279#559279 -------------------------------------------------------------- > at work, our development team has created a very simple home-brew > statemachine implementation to do a mixture of workflow management and simple > business process management, all in plain java. This was a few years ago and > met the requirements back then. > > As the business process got more complicated, we are now looking into > existing solutions supporting more concepts than our simplistic state machine > does. > > I skimmed the PVM documentation and found java classes resembling activities, > nodes, transitions and the like. This looks promising, yet I'm not sure about > the intended usage of PVM. > > Is PVM intended to be used by developers to create process descriptions by > coding in java, without using any of the XMLish or graphical "concrete > syntaxes" of process modelling? If "intended to be used" is too much, would > this at least be a sane, supported use case of PVM? Or is PVM altogether > "under the hood" of jBPM and should not be used directly? How stable is the > PVM API expected to be? The PVM is meant to be the foundation on top of which multiple process languages can be implemented. Read the http://onjava.com/pub/a/onjava/2007/05/07/the-process-virtual-machine.html Process Virtual Machine article for the full discussion. The target languages actually include Java although this is not documented as extensively. The class org.jbpm.pvm.internal.builder.ProcessDefinitionBuilder from jbpm-pvm.jar provides a fluent interface for creating process definitions straight in Java without parsing any process document. The interfaces in jbpm-api.jar in fact constitute the API for the PVM, aiming to be as language-neutral as possible. Although not part of the API the process definition builder is relatively stable, it has not been touched in a while. In sum, yes, direct acess to the PVM is a valid, though advanced, use case. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/559279#559279] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2034]
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