OpenEuphoria

Re: ODBC namespace identifier

• Posted by Rad <radhx at rediffmail.com> Dec 08, 2005
• 515 views

Alex Chamberlain wrote:
> 
> Juergen Luethje wrote:
> > 
> > Rad wrote:
> > 
> > > I am using odbc.e with the name space identifier ODBC in the
> > > Begin area of WinMain() window.
> > > 
> > > }}}
<eucode>
> > > include odbc.e as ODBC
> > > </eucode>
{{{

> > > 
> > > 
> > > I have also included a library mss.ew of my own routines after odbc.
> > > 
> > > }}}
<eucode>
> > > include mss.ew
> > > </eucode>
{{{

> > > 
> > > 
> > > Now, I have written a procedure in mss.ew which accesses ODBC:getData()
> > > function, but ODBC name space identifier is not recognised.
> > > 
> > > I get following error:
> > > 
> > > D:\EUPHORIA\IDE\Projects\Syndicate ODBC\mss.ew:155
> > > ODBC has not been declared
> > >     		rec_data = ODBC:getData(sysmsgs_hndl)
> > >     		              ^
> > > 
> > > Only when I move the concerned procedure to the General area of the window
> > > where ODBC is accessed, the name space identifier is recognized and system
> > > works fine.
> > > 
> > > Is it a problem with ODBC or am I doing something wrong?
> > > How can I avoid having my own routine outside mss.ew?
> > 
> > See section "Scope" in the reference manual:
> >      <a
> >      href="http://www.rapideuphoria.com/refman_2.htm#42">http://www.rapideuphoria.com/refman_2.htm#42</a>
> > 
> > | A namespace identifier has local scope. It is known only within the file
> > | that declares it, i.e. the file that contains the include statement.
> > | Different files might define different namespace identifiers to refer to
> > | the same included file. 
> > 
> > When your library 'mss.ew' also contains a line such as
> >      include odbc.e as ODBC
> > 
> > then your program should work as expected.
> 
> I think it needs mentioning that the include will not be included, parsed and
> executed twice - it will simply be visible for use in mss.ew.
> 
> Alex


Thanks Juergen, Alex.

I was under impression that once included at the topmost level, the includes
will be available throughout the next levels.

Regards,
Rad.