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The handle is invalid

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    #1

    The handle is invalid

    Alpha 5 v9 - I'm getting the message

    Script Create Web Pages line 482 htm_pointer.write_line("tr class=dataroweven>")

    The handle is invalid

    when running the following:

    :
    :
    :
    473 htm_pointer.write_line("<tr class=datarowodd>")
    474 htm_pointer.write_line("<td>" + web_academic_year + "</td>")
    475 htm_pointer.write_line("<td>" + web_academic_term + "</td>")
    476 htm_pointer.write_line("<td class=" + web_attainment_css + ">" + web_attainment + "</td>")
    477 htm_pointer.write_line("<td class=" + web_attitude_css + ">" + web_attitude + "</td>")
    478 htm_pointer.write_line("<td class=" + web_progress_css + ">" + web_progress + "</td>")
    479 htm_pointer.write_line("<td class=" + web_attendance_css + ">" + web_attendance +"</td>")
    480 htm_pointer.write_line("<td class=" + web_behaviour_css + ">" + web_behaviour + "</td>")
    481 htm_pointer.write_line("</tr>")
    482 htm_pointer.write_line("<tr class=dataroweven>")
    483 htm_pointer.write_line("<td>" + web_academic_year + "</td>")
    484 htm_pointer.write_line("<td>" + web_academic_term + "</td>")
    485 htm_pointer.write_line("<td class=" + web_attainment_css + ">" + web_attainment + "</td>")
    :
    :
    :
    I've numbered the lines to correspond with the real script (called Create Web Pages).

    It happens every time the script is run.

    htm_pointer is DIMmed as P and the file has been opened OK. As far as I can tell all the variables have been DIMMed and contain valid data.

    Any ideas please?
    Tags: None
    #2
    Re: The handle is invalid

    Might post in the Application Server area instead of the Desktop.
    There can be only one.

    Comment

      #3
      Re: The handle is invalid

      <<htm_pointer.write_line("<tr class=dataroweven>")>>

      If dataroweven is a variable, shouldn't it be

      Code:
      htm_pointer.write_line("<tr class=" + dataroweven + ">")
      F.
      Finian

      Comment

        #4
        Re: The handle is invalid

        Thanks for responding.

        dataroweven isn't a variable, its a string literal. The line should be correct as shown. Variables are those which are outside quotes and concantenated to a literal with a +.

        This part of the code is within a loop reading about 450 records from a table and generating a static web page for each record. The problem appears to occur after a number of pages have been generated but not always the same number. The A5v9 PC is running XP Pro SP2 and the database is on a shared disk on a server running Windows Server 2003. It was originally thought it might be a cacheing or connectivity issue but that wouldn't explain why it always happens at the same line of code. I have tried commenting out that line and then it happens at the next line so it's not a syntax issue. Memory?

        Comment

          #5
          Re: The handle is invalid

          To Stan Matthews - it's not using the application server. This is static web page HTML being generated from a script in desktop A5v9.

          Comment

            #6
            Re: The handle is invalid

            How many "htm_pointer.write_line()" statements do you run thru for each record? Very interesting to hear it always bombs out on the same line but yet it happens for different records.

            When you look at the file after the error message did it get the previous line written, the statement prior to line 482?

            I would start off with assuming that you are maxing some internal control out with too many write_line() commands. Though I am not sure why that would be, just a guestimate.

            Instead of writing each line individually, store the data in a variable, then after processing the record, write the variable out to the file.
            Andrew

            Comment

              #7
              Re: The handle is invalid

              Originally posted by rbsystemsdesign View Post
              To Stan Matthews - it's not using the application server. This is static web page HTML being generated from a script in desktop A5v9.
              My bad, just looked unfamiliar.
              There can be only one.

              Comment

                #8
                Re: The handle is invalid

                I do something similar to create xml files except that I do all the string concatenation within the variable space and then create the file with a single

                Code:
                save_to_file(varname,filename)
                command, rather than writing each line to the file as a separate action. I'm not sure if it would make a difference but it might be worth a try. It allows me to check the xml in a msg box during debugging before committing the values.
                Finian

                Comment

                  #9
                  Re: The handle is invalid

                  Finian & Aschone - I'll try your suggestions. Thanks.

                  Comment

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