FreeTDS Development Group

[Hans Kramer <Hans.Kramer AT xs4all.nl>]

Hi Bill, James

Of course, before diving in writing dbtextsize(), I should have looked
whether I get dbwritetext() working under FreeTDS with my code.
I have to connect to a Sybase 12.5.3 database; have to read/write text
columns; got to run on an AMD linux box :-)

I reduced the code to the following, which works with the sybase db-lib:
main()
{
    LOGINREC     *login;
    DBPROCESS    *dbproc;

    static BYTE data[512] = "Hello FreeTDS";

    if (dbinit() == FAIL)
        exit(-1);

    login = dblogin();
    DBSETLUSER(login, "user");
    DBSETLPWD(login, "password");
    dbproc = dbopen(login, "CANCUN");

    dbcmd(dbproc, "use FIDIA_Y2_95_02");
    dbsqlexec(dbproc);
    dbresults(dbproc);

    dbcmd(dbproc, "select * from text_test where id = 1");
    dbsqlexec(dbproc);
    dbresults(dbproc);
    dbnextrow(dbproc);

    if (dbwritetext(dbproc, "text_test.data", dbtxptr(dbproc, 2),
DBTXPLEN,
                    dbtxtimestamp(dbproc, 1), TRUE, (DBINT) strlen((char
*) data), data) == FAIL)
        puts("boing");

    dbexit();
}

Do I miss something here???? 
I figured that tds_process_simple_query() in dbwritetext() returned
FAIL, but further I haven't been able to dig.

Hans.




On Fri, 2006-01-20 at 15:13 +0000, Thompson, Bill D (London) wrote:
> James, Hans,
> 
> there is also (in Sybase) a dbtextsize() function 
> which is related to dbreadtext() which we HAVE implemented.
> 
> http://sybooks.sybase.com/onlinebooks/group-cn/cng1250e/dblib/@ebt-link;
> pt=40316?target=%25N%15_28803_START_RESTART_N%25
> 
> again, not too difficult to implement, if you look at the code we've
> written for dbreadtext.
> 
> Bill
> 
> -----Original Message-----
> From: freetds-bounces AT lists.ibiblio.org
> [mailto:freetds-bounces AT lists.ibiblio.org] On Behalf Of Lowden, James K
> Sent: 20 January 2006 14:49
> To: FreeTDS Development Group
> Subject: Re: [freetds] db-lib dbtextsize implementation
> 
> 
> > From: Hans Kramer
> > Sent: Friday, January 20, 2006 6:51 AM
> > 
> > How hard is it to implement dbtextsize?
> > 
> > I am familiar with C and db-lib ...  but not with TDS. Can anybody
> > give me some pointers.
> > 
> 
> Not too hard.  Cf. src/dblib/dblib.c::dbsetopt().  I think it would be
> similar to DBDATEFORMAT; format the correct string for the server and
> add it to the command buffer.  It will be sent the next time the buffer
> is flushed to the server.  
> 
> --jkl
> 
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