> Hi.....
>
> I have exported few files into my DB server running on LINUX os.
> I connected to it remotely from windows and through one sample application
> like webserver i am trying to read the contents of it when ever there is a
> request for the specified file.Using the below example code.
> Is this correct?I am not finding that it is reading it from the database.
> How can i make sure of this.I am unable to open the requested file from
win
> application through database.
> please suggest me .........
> voi d GetFiles(PGconn *conn, unsigned int lobjId, int start)
> {
>
> ---------
>
> ------------
>
> int lobj_fd;
>
> lobj_fd = lo_open(conn, lobjId, INV_READ);
>
> if (lobj_fd < 0)
>
> {
>
> MessageBox(0,"error","Cannot Object Id ",MB_OK);
>
> }
>
> lo_lseek(conn, lobj_fd, start, SEEK_END);
>
> len = lo_tell(conn,lobj_fd);
>
> lo_lseek(conn, lobj_fd, start, SEEK_SET);
>
> buf =(char*) malloc(len + 1);
>
> nread = 0;
>
> while (len - nread > 0)
>
> {
>
> nbytes = lo_read(conn, lobj_fd, buf, len - nread);
>
> buf[nbytes] = ' ';
>
> nread += nbytes;
>
> }
>
> MessageBox(0,"Inside get","test",MB_OK);
>
> free(buf);
>
> lo_close(conn, lobj_fd);
>
> }
>
>
>
> Thank you.....
> Sandhya
>
> > ----- Original Message -----
> > From: "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
> > To: "sandhya" <sandhyar(at)amiindia(dot)co(dot)in>
> > Cc: "postgre" <pgsql-admin(at)postgresql(dot)org>
> > Sent: Monday, December 26, 2005 9:08 PM
> > Subject: Re: [ADMIN] reg:lseek&read ..pls
> >
> >
> > > "sandhya" <sandhyar(at)amiindia(dot)co(dot)in> writes:
> > > > But before that i need to know the size of the object from which i
am
> =
> > > > trying to get the contents.
> > > > How can i do this?
> > >
> > > Same way you'd do it for a Unix file: seek to the end, note the end
> > > offset, seek back to the start and read.
> > >
> > > ... lo_open ...
> > > lo_size = lo_lseek(conn, fd, 0, SEEK_END); // where's the end?
> > > lo_lseek(conn, fd, 0, SEEK_SET); // go back to start
> > >
> > > regards, tom lane
> > >
> > > ---------------------------(end of
broadcast)---------------------------
> > > TIP 2: Don't 'kill -9' the postmaster
> > >
> >
> >
> >
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 2: Don't 'kill -9' the postmaster
> >
>
>
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 6: explain analyze is your friend
>