You did not show us the XML so I took a guess:

use strict;
use XML::Rules;

my %good_division_number = map( ($_ => 1), qw(30 31 32 35 38));

my $parser = XML::Rules->new(
    stripspaces => 7,
    rules => {
        _default => '',
        Division => sub {
            if ( $good_division_number{ $_[1]->{DivisionNumber} }) {
                return '+Bedrooms' => $_[1]->{DivisionQuantity};
            } else {
                return;
            }
        },
        Divisions => 'pass',
        DivisionHouseRoom => sub {
            print "$_[1]->{HouseCode}\t$_[1]->{Bedrooms}\n";
            return;
        },
        root => 'pass',
    }
);

open my $fh, ">", "Result.csv" or die $!;
my $old = select($fh);
$parser->parse(\*DATA);
close $fh;
select $old;
print "DONE\n";

__DATA__
<root>
 <DivisionHouseRoom HouseCode="1">
  <Divisions>
   <Division DivisionNumber="15" DivisionQuantity="5" />
   <Division DivisionNumber="30" DivisionQuantity="2" />
  </Divisions>
 </DivisionHouseRoom>
 <DivisionHouseRoom HouseCode="2">
  <Divisions>
   <Division DivisionNumber="30" DivisionQuantity="5" />
   <Division DivisionNumber="35" DivisionQuantity="7" />
  </Divisions>
 </DivisionHouseRoom>
</root>

[download]

Jenda
Enoch was right!
Enjoy the last years of Rome.

In reply to Re: Parsing huge XML file by Jenda
in thread Parsing huge XML file by Gangabass

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