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Charting error

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  • Charting error

    I am attempting to create a chart based on data returned from an SQL statement built and run in an xbasic function.

    but when it returns from the xbasic function, I get this error : Error:Script:a5_wp_series_eval() line:12 Expected value
    I scrolled thru 50 pages of the documentation after putting this in the search and come up with nothing.
    What does this error mean?

    I have confirmed that the xbasic function is properly creating the data:


    My data series is defined as
    Xbasic function name : getdata
    Subseries names: tribe, species, area, timestrata, num_fish, num_lbs

    function getdata as C (e as p)
    ' Description:
    ' Gets criteria (time strata, species, catch area, data source) from
    ' screen and builds SQL query to get data for chart
    ' Revision History
    ' Date Description of Modification
    ' 07/15/2021 Initial version
    ' Arguments: e as Pointer to submitted record
    ' Calls: none
    ' Returns: string
    ' return value: list of values for chart

    dim ls_timestrata as c
    dim ls_species as c
    dim ls_area as c
    dim ls_datasource as c
    dim ls_txt as c
    dim ls_tribe as c
    dim ls_select as c
    dim ls_from as c
    dim ls_where as c
    dim ls_group as c
    dim ls_order as c
    dim ls_begin_date as c
    dim ls_end_date as c

    dim ls_sql as c
    dim args as sql::Arguments
    dim cn as sql::Connection
    dim rs as sql::ResultSet
    dim connectflag as L
    dim resultflag as L
    dim goodflag as L

    ' get criteria

    if eval_valid("e.datasubmitted.SHOW") = .F. then
    ls_datasource = "TOCAS"
    ls_datasource = e.datasubmitted.SHOW
    end if

    if (ls_datasource = "TOCAS") then
    ls_from = " FROM tocas_dba.TOCAS_VIEW "
    if (ls_datasource = "WAFT") then
    ls_from = " FROM tocas_dba.LIFT_VIEW "
    else ' ls_datasource = "ALL"
    ls_from = " FROM ALL_TICKET_VIEW "
    end if
    end if

    if eval_valid("e.datasubmitted.time_strata") = .F. then
    ls_timestrata = "Day"
    ls_timestrata = e.datasubmitted.time_strata
    end if

    CASE ls_timestrata = "Day"
    ls_timeclause = "landing_date"
    CASE ls_timestrata = "Week"
    ls_timeclause = "mgmt_week"
    CASE ls_timestrata = "Month"
    ls_timeclause = "month(landing_date)"
    CASE ls_timestrata = "Year"
    ls_timeclause = "catch_year"
    ls_timeclause = ls_break

    if eval_valid("e.datasubmitted.begin_date") = .F. then
    ls_begin_date = "01/01/1970"
    ls_begin_date = e.datasubmitted.begin_date
    end if

    if eval_valid("e.datasubmitted.end_date") = .F. then
    ls_end_date = "12/31/2100"
    ls_end_date = e.datasubmitted.end_date
    end if

    if eval_valid("e.datasubmitted.TRIBE") = .F. then
    ls_tribe = SESSION.USER_TRIBE
    ls_tribe = e.datasubmitted.TRIBE
    end if

    if eval_valid("e.datasubmitted.species") = .F. then
    ls_species = "001"
    ls_species = e.datasubmitted.species
    end if

    if eval_valid("e.datasubmitted.catch_area") = .F. then
    ls_area = "07"
    ls_area = e.datasubmitted.catch_area
    end if

    ' build query
    ls_select = "SELECT tribe_num, species_code, catch_area_code, " + ls_timeclause + " as timestrata, sum(rptd_cnt) as num_fish, sum(rptd_lbs_qty) as num_lbs "
    ls_where = "WHERE tribe_num = :whattribe and species_code = :whatspecies and catch_area_code = :whatarea"
    ls_where = ls_where + " and landing_date >= :startdate and landing_date <= :enddate "

    ls_group = " group by tribe_num, species_code, catch_area_code, " + ls_timeclause
    ls_order = " order by " + ls_timeclause + ", species_code, catch_area_code"

    ls_sql = ls_select + ls_from + ls_where + ls_group + ls_order
    ' set arguments
    args.Add("whattribe", ls_tribe )
    args.Add("whatspecies", ls_species )
    args.Add("whatarea", ls_area)
    args.Add("startdate", ls_begin_date)
    args.Add("enddate", ls_end_date)

    ' run query and get data
    connectflag = cn.Open("::Name::TOCAS")
    cn.PortableSQLEnabled = .f.
    resultflag = cn.Execute(ls_sql, args)
    rs = cn.ResultSet
    ls_txt = ""
    goodflag = rs.nextRow()
    while goodflag
    ls_txt = ls_txt + + "|" + + "|" + "|" + "|" + "|" + + crlf()
    goodflag = rs.nextRow()
    end while

    getdata = ls_txt

    end function ' getdata

  • #2
    expected value usually means that you were using a function and did't close a paren or a close quote, or the function takes two parameters and you only provided one, or that you were combining text values with a + and forgot the +. Something like that.
    Pat Bremkamp
    MindKicks Consulting


    • #3
      when i define my data series xbasic function (in the Properties Data Series Builder) as getdata(e), I do not get the error, but it never calls the function. If I define it as getdata with no argument, I get the error after it calls the function, runs the SQL and gets the data (see above). It correctly puts the data in the format needed, but then fails to pass it back to create the chart.
      I pretty much copied the code from the example in the Video, except for the SQL statement itself. I am stumped. Could it be because one of my subseries is a date?


      • #4
        Fixed the problem. Needed to call refreshcart from a button.