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The "Owner" of a RAP function

rbuserrbuser
edited May 2003 in End User
Is there any way of getting a reference to the report that is
compiling/running a RAP function from within it's implementation?

For instance, I have the following RAP function:

{------------------------------------------------------------------------------}
{ TmfGetSomePropertyFunction.ExecuteFunction}
procedure TmfGetSomePropertyFunction.ExecuteFunction(aParams: TraParamList);
var
lsString: string;
lResult: Variant;
begin
GetParamValue(0, lsString);
// Return the property that the user requested
lResult := myDataModule.SomeProperty;
SetParamValue(1, lResult);
end;{ procedure, ExecuteFunction }

myDataModule contains the report which is compiling/running the events
that use the function TmfGetSomePropertyFunction. I actually want to
reference a method/property of this data module (and I can't simply add
it to the uses clause, because there may be multiple instances of this
datamodule running in the application at any one time). If I could get
at a reference for the report component, then I could use the owner
property of this.

Any ideas?

Best Regards,

James Crosswell
Software Engineer
Microforge.net Limited
http://www.microforge.net

Comments

  • rbuserrbuser
    edited May 2003
    Hi James,

    my solution was to pass the report itself always as first parameter.

    HTH,
    Chris Ueberall;
  • rbuserrbuser
    edited May 2003
    Chris Ueberall [TeamDM] wrote:

    Hmmm - well I tried this. I have two applications using this data
    module, one is a window application (that I'm using to design the
    reports) and which only ever has one instance or the datamodule
    containing the report which uses this RAP function. If I preview the
    report in this application, then the RAP works fine.

    The other application is an ISAPI - which creates an instance of the
    data module for each request made for the report, and in this one, the
    Report parameter is always nil - so of course I get an error??? No idea
    why this would be.

    Best Regards,

    James Crosswell
    Software Engineer
    Microforge.net Limited
    http://www.microforge.net

    PS: The function now reads as follows...

    {------------------------------------------------------------------------------}
    { TmfGetUserPropertyFunction.ExecuteFunction}

    procedure TmfGetUserPropertyFunction.ExecuteFunction(aParams: TraParamList);
    var
    lsString: string;
    ppReport: TppReport;
    lResult: Variant;
    begin

    GetParamValue(0, ppReport);
    GetParamValue(1, lsString);

    // Return the property that the user requested
    lResult :=
    TdmReportForge(ppReport.Owner).CurrentUser.GetFieldValue(lsString);

    SetParamValue(2, lResult);

    end;{ procedure, ExecuteFunction }
  • rbuserrbuser
    edited May 2003
    James Crosswell wrote:
    so of course I get an error??? No idea

    I tell a lie - I had an error in the code for the ISAPI. The method that
    you suggested works perfectly. Thanks Chris!

    Best Regards,

    James Crosswell
    Software Engineer
    Microforge.net Limited
    http://www.microforge.net
This discussion has been closed.