problem exception handling on midas server

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4 total messages Started by Jeroen Eikmans Wed, 04 Oct 2000 00:00

#962

Author: Jeroen Eikmans
Date: Wed, 04 Oct 2000 00:00

46 lines
1510 bytes

Hello,

I use C++builder 5.0 to build a midas application server.  On this
app.server I have this method :

STDMETHODIMP TFalisServerImpl::get_ThrowException(long* Value)
{
  try
  {
    // create an exception
    throw Exception("Server Exception");
  }
  catch(Exception &e)
  {
    return Error(e.Message.c_str(), IID_IFalisServer);
  }
  return S_OK;
};

On the client I have:

  try {
    // call the method on the applicaiton server
    FConnection->ServerInterface.get_ThrowException();
  }
  catch (...) {
    ShowMessage("hi");
  }

The problem is that on the client no exception is catched ?? What am I doing
wrong ?? By the way I don't use TClientDataSet.

thanx,


--
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Re: problem exception handling on midas server

#965

Author: Mark Cashman (TeamB)
Date: Wed, 04 Oct 2000 00:00

8 lines
895 bytes

Try a catch (Exception &VCLException) instead of catch(...)

------
Mark Cashman, TeamB C++ Builder
http://www.temporaldoorway.com/programming/index.htm
C++ Builder, JBuilder programming information
Home of The C++ Builder Programmer's Webring - Join us!
------

Re: problem exception handling on midas server

#784

Author: Jeroen Eikmans
Date: Thu, 05 Oct 2000 00:00

19 lines
1292 bytes

The exception is still not catched. I think that the exception thrown by the
app server is not transported by the MIDAS architecture to the client,
because there comes no exception on the client side.

Should I use call back functionality ??


"Mark Cashman (TeamB)" <mcashman@temporaldoorway.com> wrote in message
news:39DB4B6B.EA805DFD@temporaldoorway.com...
> Try a catch (Exception &VCLException) instead of catch(...)
>
> ------
> Mark Cashman, TeamB C++ Builder
> http://www.temporaldoorway.com/programming/index.htm
> C++ Builder, JBuilder programming information
> Home of The C++ Builder Programmer's Webring - Join us!
> ------
>
>

Re: problem exception handling on midas server

#787

Author: Steve Pietrykoski
Date: Thu, 05 Oct 2000 00:00

26 lines
1728 bytes

I have in my projects successfully thrown errors on the server and
caught them on the client.  In your code you are relying on the return
value from the server function.  For me, I stepped through the VCL code
and found that the return value is ignored.  I always return S_OK and I
don't catch the exception on the server.

Jeroen Eikmans wrote:
> 
> The exception is still not catched. I think that the exception thrown by the
> app server is not transported by the MIDAS architecture to the client,
> because there comes no exception on the client side.
> 
> Should I use call back functionality ??
> 
> "Mark Cashman (TeamB)" <mcashman@temporaldoorway.com> wrote in message
> news:39DB4B6B.EA805DFD@temporaldoorway.com...
> > Try a catch (Exception &VCLException) instead of catch(...)
> >
> > ------
> > Mark Cashman, TeamB C++ Builder
> > http://www.temporaldoorway.com/programming/index.htm
> > C++ Builder, JBuilder programming information
> > Home of The C++ Builder Programmer's Webring - Join us!
> > ------
> >
> >

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