[Mapserver-users] Can't locate object method "TIEHASH"

[Eric Bridger]

On Fri, 2004-05-28 at 10:00, Sean Gillies wrote:
> On May 28, 2004, at 6:38 AM, Eric Bridger wrote:
> 
> > On Fri, 2004-05-28 at 05:54, Agneta Schick wrote:
> >> Hello mapserver-users,
> >>
> >> I've searched the mail archive and found 2 messages on this topic,
> >> both were, however, unanswered.
> >>
> >> So I'll try again...
> >>
> >> Platform:
> >> 	MapServer 4.0.1
> >> 	solaris 9
> >> 	Perl 5.8.3
> >>
> >> I want to test an application querying shape files.
> >> My perl mapscript code
> >> ...
> >>   $layer->queryByPoint($tmp_map,$pnt,$mapscript::MS_SINGLE,1000);
> >>   my $res = $layer->getResult(0);
> >>   $layer->open();
> >>   my $shape=new mapscript::shapeObj($layer->{type});
> >>   my $shape_index = $layer->getShape($shape,-1,$res->{shapeindex});
> >>   my $table =
> >> mapscript::msDBFOpen("/space/b3sn13/webdb/htdocs/ermos/data/ 
> >> usgs.dbf","r+");
> >> ....
> >> is terminated with
> >> Can't locate object method "TIEHASH" via package "_DBFHandle".
> >>
> >> Is this a mapscript problem or is something missing in the  
> >> installation?
> >>
> >> (I tried the same perl script on solaris 8, mapserver 3.6.5, perl 5.6
> >> and got the same error).
> >
> > This sounds familiar to me but I can't remember the details.
> >
> > The solution is to not use mapscript's DBF functions. I've never gotten
> > them to work.  Use some other dbase module. I use XBase.pm
> > http://search.cpan.org/~janpaz/DBD-XBase-0.241/lib/XBase.pm to do all
> > dbf access of shapefiles.
> >
> > Eric
> >
> 
> Will one of you enter this as a new MapScript-SWIG bug?  If it turns  
> out that
> none of us are using the msDBF* functions through mapscript, then I  
> should see
> about removing them from the module.
> 
> I too prefer to use XBase much of the time.
> 
> For querying, use shapeObj::getValue() to get at the attributes of  
> features.
> The following code
> 
>      for ($i=0; $i<$layer->{numitems}; $i++) {
>          $att_name = $layer->getItem($i);
>          $att_value = $shape->getValue($i);
>          ...
> 
> gets attribute names and items.  It's a bit awkward that you can't get  
> both from
> the same object.  If you feel strongly about that, file a new feature  
> enhancement
> in Bugzilla.

I can create the bug report. I'll try and create a simple Perl script to
reproduce it.