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  1. Seam 2
  2. JBSEAM-1338

Unifying Start-page & Start-state pageflows


    • Type: Feature Request
    • Status: Closed (View Workflow)
    • Priority: Major
    • Resolution: Rejected
    • Affects Version/s: 1.2.1.GA
    • Fix Version/s: None
    • Component/s: BPM
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      Do we really need two different types of page flows?

      Pageflows started in pages.xml requires a <start-page> as the start of the pageflow. Pageflows started on @Begin annotated methods need a <start-state>. The problem is that you could easily want to start pageflows from either location, and would then need to write two identical pageflows to accomodate this.

      i.e. A page for editing a widget is RESTful, and bookmarkable with the id in the URL, elsewhere, you may want to edit the same widget in a nested conversation. as part of another process.

      For the RESTFul URL, you need to use pages.xml to define the conversation start and the pageflow.
      For the other edit, you need a @begin annotated method (possibly with passing the widget instance in) and it requires a different pageflow, even though it is identical to the first. This annotation is also required to identify the need for a nested conversation.

      There is a real need for initiating pageflows from two separate places, and a need for them to use the same page flow. It is possible to work around this and go back to the @Create @Begin(pageflow="editwidget:") annotations on a method for RESTful urls.

      Given the number of times the problem appears in the forums, it appears to be an inobvious stumbling block without a real purpose as to its existence.
      It just seems messy to have two identical flows, when in 99% of cases the start page/state can be derived from one unified pageflow. In the other 1%, it is still possible to write a separate pageflow, but having two incompatible but almost identical flows appears clumsy.

        Gliffy Diagrams




              • Assignee:
                Delphi's Ghost Andy Gibson
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