IDS Forum

RE: C Shared Library function in IDS 10

Posted By: Wyza, Jonathon
Date: Monday, 14 December 2009, at 2:06 p.m.

In Response To: Re: C Shared Library function in IDS 10 (Art Kagel)

Thanks for the quick response but still no go. Here is the top and
bottom of the C function: (note that CRITERIA_LENGTH is 32);

char *cx_soundex(char in_buffer[CRITERIA_LENGTH])
{

register int s_indx; /* Index into `sndx_string'. */

register int b_indx; /* Index into `buffer'. */

char *buffer;

static char sndx_string[CRITERIA_LENGTH];

...logic...

return sndx_string;
}

TIA

Jonathon

-----Original Message-----
From: ids-bounces@iiug.org [mailto:ids-bounces@iiug.org] On Behalf Of
Art Kagel
Sent: Monday, December 14, 2009 1:19 PM
To: ids@iiug.org
Subject: Re: C Shared Library function in IDS 10 [18373]

You have defined the UDR that calls the function with an argument of
type
VARCHAR(32). This does not correspond to the C language type char
...[32].
You should have used:

create function cx_soundex( str CHAR(32) ) returning CHAR(4)
EXTERNAL NAME "/pathtolib/BClibsoundex.so( cx_soundex )"
LANGUAGE C;

Art

Art S. Kagel
Oninit (www.oninit.com)
IIUG Board of Directors (art@iiug.org)

See you at the 2010 IIUG Informix Conference
April 25-28, 2010
Overland Park (Kansas City), KS
www.iiug.org/conf

Disclaimer: Please keep in mind that my own opinions are my own opinions
and
do not reflect on my employer, Oninit, the IIUG, nor any other
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with which I am associated either explicitly or implicitly. Neither do
those opinions reflect those of other individuals affiliated with any
entity
with which I am affiliated nor those of the entities themselves.

On Mon, Dec 14, 2009 at 12:43 PM, Wyza, Jonathon
<wyzaj@bethelcollege.edu>wrote:

> In a piece of software that I use a custom version of soundex exists.
> I've split this function into its own shared library and tested it to
> show that calling the function works as such from a regular C program:

>
> #include <stdio.h>
>
> char *cx_soundex(char in_buffer[32]);
>
> main (argc, argv)
>
> int argc;
>
> char *argv[];
>
> {
>
> printf(cx_soundex(argv[1]));
>
> }
>
> Now I created a custom function in IDS using:
>
> create function cx_soundex(str VARCHAR(32))
>
> returning VARCHAR(4)
>
> EXTERNAL NAME "/pathtolib/BClibsoundex.so(cx_soundex)"
>
> LANGUAGE C;
>
> And then attempt to use it using:
>
> select cx_soundex("wyza")
>
> from table_name
>
> where where_statements
>
> However I get a blank returned for the expression. I've done some
> debugging and it is because the function doesn't appear to be getting
> passed the value "wyza" to it. I've also tried cx_soundex(str="wyza")
> which I've seen in the documentation. The IDS log shows that the
shared
> library is loaded and no error is thrown. The library's debug
> statements shows that no value is being passed to the function but the

> function is being called.
>
> Has anyone had experience creating and using custom C functions in
IDS?
> I tried doing the function in SPL but it is too complicated.
>
> Jonathon Wyza
>
> Programmer/Analyst
>
> Administrative Computing
>
> Bethel College
>
> (574)-257-3381
>
> AIM: Iamwyza
>
> jonathon.wyza@bethelcollege.edu
<mailto:jonathon.wyza@bethelcollege.edu>
>
> ==========================
>
> SLES 10 SP2 & IDS 10.0 HC9
>
> "One machine can do the work of fifty ordinary men. No machine can do
> the work of one extraordinary man. " - Elbert Hubbard
>
>
>
>
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Messages In This Thread

• C Shared Library function in IDS 10
  Wyza, Jonathon -- Monday, 14 December 2009, at 12:43 p.m.
  • Re: C Shared Library function in IDS 10
    Art Kagel -- Monday, 14 December 2009, at 1:18 p.m.
    • RE: C Shared Library function in IDS 10
      Wyza, Jonathon -- Monday, 14 December 2009, at 2:06 p.m.
      • Re: C Shared Library function in IDS 10
        Art Kagel -- Monday, 14 December 2009, at 4:14 p.m.
        • Re: C Shared Library function in IDS 10
          John Miller iii -- Monday, 14 December 2009, at 7:39 p.m.
          • RE: C Shared Library function in IDS 10
            Wyza, Jonathon -- Tuesday, 15 December 2009, at 3:15 p.m.
            • Re: C Shared Library function in IDS 10
              Art Kagel -- Tuesday, 15 December 2009, at 3:34 p.m.
              • RE: C Shared Library function in IDS 10
                Wyza, Jonathon -- Tuesday, 15 December 2009, at 4:10 p.m.
                • RE: C Shared Library function in IDS 10
                  Brian Amstutz -- Tuesday, 15 December 2009, at 5:13 p.m.
                • RE: C Shared Library function in IDS 10
                  John Miller iii -- Tuesday, 15 December 2009, at 5:34 p.m.
                  • RE: C Shared Library function in IDS 10
                    Wyza, Jonathon -- Monday, 21 December 2009, at 9:25 a.m.

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