[Bioperl-l] problem with bioperl on UNIX

[Hilmar Lapp]

Can you file this as a bug report? At the least, it is poor error  
handling in WebQuery.pm, which cannot be your fault nor NCBI's, and  
-verbose won't fix that.

	-hilmar

On Thursday, February 6, 2003, at 10:44  AM, Prachi Shah wrote:

> Thanks Simon and Matthew for your tips. dos2unix did
> not make a difference. I am using perl 5.6.0 with
> bioperl 1.2, so its the latest. No proxy on the
> machine and the strange thing is.....when I use LWP
> useragent directly to connect to NCBI Entrez, it
> works. But with Bio::DB::Query::GenBank it still gives
> me the error:
>
> Use of uninitialized value in concatenation (.) at
> tryBioPerl.pl line 18.
> COUNT
> Can't use an undefined value as an ARRAY reference at
> /home/pss11/Perl/bioperl-1.2/lib/site_perl/5.6.0/Bio/DB/Query/ 
> WebQuery.pm
> line 204.
>
> Any more ideas are very welcome...
> Thanks,
> Prachi.
>
> # In case you need the code....see at the end.
>
> --- "simon andrews (BI)" <simon.andrews at bbsrc.ac.uk>
> wrote:
>>
>>> -----Original Message-----
>>> From: Prachi Shah
>>> Subject: [Bioperl-l] problem with bioperl on UNIX
>>>
>>> It works perfectly fine on the Win perl setup,
>>> but when I use it on the UNIX system it gives me
>> the
>>> following error:
>>>
>>
>> I just ran your code directly on our system, and it
>> worked fine; not so much as a warning.  This was
>> using BioPerl 1.2 under Linux, Perl 5.6.0.
>>
>> It looks as though your query setup is going wrong.
>> Your first error:
>>
>>> Use of uninitialized value in concatenation (.) at
>>> tryBioPerl.pl line 18.
>>
>> ..comes from $count being undef, which means that
>> the $query->count didn't return anything.  The call
>> to Bio::DB::Query must have worked though otherwise
>> you'd have got a warning saying "can't call count on
>> an undefined value", so your problem is that your
>> query worked, but no hits were returned.  There are
>> a couple of potential reasons for this;
>>
>> 1) Genbank wasn't working properly when you tried
>> it.  Try it again and see if it works now!
>>
>> 2) Your network setup on your unix box isn't
>> allowing you to connect to the genbank site
>> properly.  This is usually because your connection
>> must pass through a proxy server to access the
>> internet, and you haven't given Perl the details of
>> this proxy.  The easiest way to do this is to set
>> the 'http_proxy' environment variable in your shell
>> (or within your script using the %ENV hash).
>>
>> $ENV{'http_proxy'}='http://my.proxy.address:port';
>>
>> You might also want to try upgrading your BioPerl to
>> the latest version in case you are hitting a problem
>> with an older version.
>>
>> Hope this helps
>>
>> Simon.
>
>
>
> ###### code starts here ####
>
> #! /usr/bin/perl -w
>
> use lib qw(
> /home/pss11/Perl/bioperl-1.2/lib/site_perl/5.6.0
> /home/pss11/Perl/IO-String-1.02/lib/site_perl/5.6.0
> /home/pss11/Perl/libwww-perl-5.69/lib/site_perl/5.6.0
> /home/pss11/Perl/URI-1.23/lib/site_perl/5.6.0);
>
> use IO::String;
> use strict;
> use Bio::DB::GenBank;
> use Bio::DB::Query::GenBank;
>
> my $query_string = 'Gallus gallus[organism]';
> my $query = Bio::DB::Query::GenBank->new(
> -db=>'protein',  -query=>$query_string);
> my $count = $query->count;
> print "COUNT $count\n";
>
> my @ids   = $query->ids;
>
> open(OUT,">/home/pss11/AutoBlast-GI-UNIX/queryout");
>
> while(@ids)
> {
>         my $prt = shift @ids;
>         print OUT "$prt \n";
> }
> close(OUT);
>
>
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-- 
-------------------------------------------------------------
Hilmar Lapp                            email: lapp at gnf.org
GNF, San Diego, Ca. 92121              phone: +1-858-812-1757
-------------------------------------------------------------