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Can DynamicConnections be used in a disconnected UX mobile app?

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  • Can DynamicConnections be used in a disconnected UX mobile app?

    Hi,

    I'm working on a UX with a few List controls. The UX will ultimately be used in a disconnected mobile app using Phonegap. I want to use the DynamicConnection feature of Alpha Anywhere whereby a session variable named session.__protected__[ConnName] is set to the connection string to use for the session. Subsequent uses of a connection named DynamicConnection_[ConnName] use the value in the session variable. I've got this working fine in a standard web app built with Alpha Anywhere.

    My questions:

    1. What is best practice for setting a session variable to be used in a mobile app? Can it be done? i have not been able to find definitive information or examples about setting and using session variables on the client side in a disconnected mobile app. There is a method {dialog.object}.getSessionVariable('VARNAME') but it's not clear to me how one would use the value retrieved to, for example, filter a List so that only records that match the logged-in user's username are returned. It's clear that one can use a session variable, in the form session.VARNAME, to filter a List query, but how to use the value returned by {dialog.object}.getSessionVariable('VARNAME')?

    2. Since it depends on finding an appropriately named session variable, does the DynamicConnection feature work for a mobile app (using Phonegap)? Has anyone done this kind of thing successfully?

    For now I'm just going forward with a trial-and-error approach. If anyone has insight to share on this I would sure appreciate reading it.

    Thanks.

  • #2
    Re: Can DynamicConnections be used in a disconnected UX mobile app?

    I have several apps on the smart phones. (Not Phonegap) After the login I load a set of arguments from an ajax callback. All of the arguments are passed to the various components. I think it works better than Session Variables plus the arguments can be used to filter the list-controls.

    Comment


    • #3
      Re: Can DynamicConnections be used in a disconnected UX mobile app?

      Originally posted by lvasic View Post
      plus the arguments can be used to filter the list-controls.
      Can you elaborate on how you do this? Are the arguments defined like this: dim args as SQL::Arguments ? If so how do you pass and use those in the List control filters?

      Thanks for the response.

      Comment


      • #4
        Re: Can DynamicConnections be used in a disconnected UX mobile app?

        Hi,

        I have the same challenge as Doug.


        I'm trying to make this work:

        1. Get the Connection String (could be inside onDialogIntialize)

        connection_string = "{A5API='SQLServer',A5DBVersion=2008,Server='"+dbsn+"',A5ANSINullPadWarn=Default,UserName='"+ssun+"',Password='"+sspass+"',Database='"+dbcs+"'}"

        2. Choose "Custom" in my List Control's Data Source Type
        3. Write an Xbasic function to point to "connection_string", and query from there.


        Will update further

        Comment


        • #5
          Re: Can DynamicConnections be used in a disconnected UX mobile app?

          Originally posted by dougeven View Post
          Hi,

          I'm working on a UX with a few List controls. The UX will ultimately be used in a disconnected mobile app using Phonegap. I want to use the DynamicConnection feature of Alpha Anywhere whereby a session variable named session.__protected__[ConnName] is set to the connection string to use for the session. Subsequent uses of a connection named DynamicConnection_[ConnName] use the value in the session variable. I've got this working fine in a standard web app built with Alpha Anywhere.

          My questions:

          1. What is best practice for setting a session variable to be used in a mobile app? Can it be done? i have not been able to find definitive information or examples about setting and using session variables on the client side in a disconnected mobile app. There is a method {dialog.object}.getSessionVariable('VARNAME') but it's not clear to me how one would use the value retrieved to, for example, filter a List so that only records that match the logged-in user's username are returned. It's clear that one can use a session variable, in the form session.VARNAME, to filter a List query, but how to use the value returned by {dialog.object}.getSessionVariable('VARNAME')?

          2. Since it depends on finding an appropriately named session variable, does the DynamicConnection feature work for a mobile app (using Phonegap)? Has anyone done this kind of thing successfully?

          For now I'm just going forward with a trial-and-error approach. If anyone has insight to share on this I would sure appreciate reading it.

          Thanks.
          Have you thought about using cookies? They are stored client side where you need them, vs session which are stored server side which you are trying to skip by being disconected.

          Functionally they operate similar to session variables in that they store data for a particular purpose that is used by just one "person so to speak" at a time.

          Comment


          • #6
            Re: Can DynamicConnections be used in a disconnected UX mobile app?

            I set the "session.__protected__AgencyConnection = "{A5API='SQLServer',A5DBVersion=2008,Server='sqlserver',A5ANSINullPadWarn=Default,UserName=..." one time at login.
            Then I can use my named connection string "flag = a5SQLConnectionOpen(cn,"::Name::DynamicConnection_AgencyConnection",session)"

            I only use UX, List Controls and panels. If you go to Properties\Arguments you can set your arguments there.

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