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Refresh display :: Action script

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    Refresh display :: Action script

    Hi,

    Does someone know why the 'the refresh display' action scripting command does always do a commit?
    I think that by always doing a commit you will have some unwanted db traffic overhead.

    Refresh display generated Xbasic code:

    'Refresh data in current form.
    'Can only resynch data in View mode, so save record first to be sure that layout is in View mode.
    topparent.Commit()
    topparent.Resynch()
    topparent.Refresh_Layout()

    Why not do something like this?

    Refresh display
    if topparent.get_mode() <> "view" then 'only commit when not in view mode
    topparent.commit()
    end if
    topparent.Resynch()
    topparent.Refresh_Layout()

    Regards Brendo
    Ing./bict Brendo Bongers
    Software Engineer

    http://www.brendobongers.nl

    "There's more than one way to skin a cat."

    #2
    Re: Refresh display :: Action script

    Brendo,

    I think you have posed a reasonable question. I haven't tested your idea but it looks like it would eliminate an unnecessary save/commit. I'm wondering if anyone else is doing it your way, or if anyone has any practical experience with this method?

    ba

    Comment


      #3
      Re: Refresh display :: Action script

      While I am no expert - I had noticed the same thing about the action script code and since then have been using only those commands I need for precisely the reason you mention.

      Maybe one of the more experienced folk can lend a comment or two to the discussion...

      Regards,

      Jeff

      Comment


        #4
        Re: Refresh display :: Action script

        Brendo,

        I have no good reason as to why the action script is written in that way. The additional traffic is not significant for most usages, but It would be better if it did not do the commit if unnecessary. No one ever said Action Scripting was highly optimized, or even somewhat optimized.

        It is possible that the commit method may effectively do the test for view mode, so that it wouldn't do unneeded saves, but it is undocumented, and is nothing you could count on (assuming it was true).

        However, I have found that Action Scripting sometimes uses undocumented techniques, and I check these out when they prove useful.

        But I leave none of my code in Action Scripting, as I like more control of XBasic code.
        Regards,

        Ira J. Perlow
        Computer Systems Design


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        Comment


          #5
          Re: Refresh display :: Action script

          Why not do something like this?

          Refresh display
          if topparent.get_mode() "view" then 'only commit when not in view mode
          topparent.commit()
          end if
          topparent.Resynch()
          topparent.Refresh_Layout()
          How do you know that this is not what alpha actually does?
          What happens when alpha executes .commit()?
          What happens when you click the save icon while the layout in view mode? what does it do?

          I think if you write a script like the one you suggest, you might be, unwittingly, duplicating what alpha does making the traffic even higher.

          I would like to speculate on some of the questions I posed here:
          What happens when alpha executes .commit()?or when you click the save icon?
          Quite possibly alpha looks for any new data in the buffer, if so, it will save, if not, will ignore the operation, or
          It might test for mode (which again might involve examining the buffer).
          Last edited by G Gabriel; 01-18-2007, 12:34 PM.

          Comment


            #6
            Re: Refresh display :: Action script

            Gabriel,

            The commit function saves always the data to the table. You can track this done by setting a onsave trigger at table level........
            Last edited by B.B.Bongers; 01-18-2007, 02:18 PM.
            Ing./bict Brendo Bongers
            Software Engineer

            http://www.brendobongers.nl

            "There's more than one way to skin a cat."

            Comment


              #7
              Re: Refresh display :: Action script

              Brando:
              I am not talking about what you see, but rather what you don't see, what alpha does in the process of saving.

              Comment


                #8
                Re: Refresh display :: Action script

                Gabriel, I am asking a solution, because the commit is slowing down our application.
                I don't know what Alpha exactly does or does not do at lowlevel behind the scenes of the commit function. I want to know if the commit can be omitted in certain cases .
                That's the whole reason why I started this thread.
                Ing./bict Brendo Bongers
                Software Engineer

                http://www.brendobongers.nl

                "There's more than one way to skin a cat."

                Comment


                  #9
                  Re: Refresh display :: Action script

                  Brendo:
                  I know you are asking for a solution, but what I am trying to tell you is, your proposed solution might make things worse as it might duplicate what alpha does behind the scenes.

                  Only way to find out, is to test it both ways and find out which one is faster and not simply assume that it will be, or, if someone from alpha tells you and me what happens behind the scenes.

                  Comment


                    #10
                    Re: Refresh display :: Action script

                    Hi Brendo,

                    The commit can be bypassed as you have done in your revised code. Even if Alpha does already do it, the execution of the code to determine the form mode is insignificant and only affects that client computer, not the whole network.

                    The refresh and resynch however, do create network traffic. If possible, try to eliminate them, or refresh just those objects needed, not the whole form.
                    Regards,

                    Ira J. Perlow
                    Computer Systems Design


                    CSDA A5 Products
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                    Comment

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