| RE: [jwt-dev] Unstructered graphs |
Hi Florian, I will take this answer as Pierre is currently on vacations and with limited access to email... What we call non structured graphs are graphs in which for instance more than one transition leaves a node (without the need of a split node in between) or in which one node/activity inside a split/join block is connected to another activity which is out of the previous block. Basically non structured graphs give freedom to the graph definition (i.e the jpeg image attached) In the current JWT editor non structured graphs definition are not allowed as the editor checks this constraint. In the following article (focusing on cycles and iterations in Bonita) non structured graphs concept is also explained together with cycles/iterations (in fact in Bonita we call loops or iterations on non structured graphs arbitrary cycles). If we correctly understood, JWT will not allow those cycles/iterations: http://www.theserverside.com/tt/articles/article.tss?l=BonitaPart2 Structured graphs make life easier to editors and workflow engines but add additional complexity to end users IMO. Regards, Miguel Valdes BPM Manager Bull, Architect of an Open World TM 1, rue de Provence 38130 Echirolles (France) Direct Line: +33-4-76-29-72-28 Fax: +33-4-76-29-75-18 *Orchestra*, The BPEL open source project: http://orchestra.objectweb.org *Bonita*, The XPDL open source project: http://bonita.objectweb.org This e-mail contains material that is confidential for the sole use of the intended recipient. Any review, reliance or distribution by others or forwarding without express permission is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -----Message d'origine----- De : jwt-dev-bounces@xxxxxxxxxxx [mailto:jwt-dev-bounces@xxxxxxxxxxx] De la part de Florian Lautenbacher Envoyé : vendredi 4 juillet 2008 17:48 À : 'Java Workflow Toolbox' Objet : AW: [jwt-dev] Unstructered graphs Hi Pierre, in the document (which you provided a link for) I don't find a clear definition and description of the importance of non-structured graphs. In this document only some examples for structured workflows are given as far as I can see (I didn't read it completely, but only parts of it; sorry if I missed the part that you mean!). However, I assume that you mean the difference between block-based and graph-based models? E.g. a typical BPEL-viewer is block-based (contains all kinds of blocks which are nested by each other). On the other side, languages such as BPMN are normally graph-based, so they contain only nodes and edges. So graph-based are non-blocked graphs or non-structured graphs - am I right? Or do you mean something else here? If you mean this, then I don't completely understand your question, because in JWT you normally only model graph-based models (containing nodes and edges, without defining blocks)! I would be happy if you could refine your question, then I'll try to think about how much work needs to be done to support it. Best regards, Florian -----Ursprüngliche Nachricht----- Von: jwt-dev-bounces@xxxxxxxxxxx [mailto:jwt-dev-bounces@xxxxxxxxxxx] Im Auftrag von Pierre Vigneras Gesendet: 04 July 2008 12:01 An: Java Workflow Toolbox Betreff: [jwt-dev] Unstructered graphs Hi, we are currently analysing JWT and we have the following questions: In XPDL (which is the standard supported by our BPM product called Bonita), graphs can be of different "conformance" class: Non-Blocked, Loop-Blocked and Full-Blocked. Basically, XPDL (and therefore Bonita) supports Non-Blocked graphs, meaning non-stuctured graphs. So questions are: can non-structured graph be designed with JWT? If no, do you plan to support it? How much work has to be done approximately to support it? On the importance of non-structured graph in BPM, please see: http://www.workflowpatterns.com/documentation/documents/Structured.pdf Regards. -- Pierre Vignéras Bull, Architect of an Open World TM *BPM Team*, Bull R&D 1, rue de Provence 38130 Echirolles (France) Direct Line: +33-4-76-29-74-06 *Orchestra*, The BPEL open source project: http://orchestra.objectweb.org *Bonita*, The XPDL open source project: http://bonita.objectweb.org _______________________________________________ jwt-dev mailing list jwt-dev@xxxxxxxxxxx https://dev.eclipse.org/mailman/listinfo/jwt-dev _______________________________________________ jwt-dev mailing list jwt-dev@xxxxxxxxxxx https://dev.eclipse.org/mailman/listinfo/jwt-dev
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