HI, probably you know this trick... (send this node to the Reaper)
I am an Junir OOPerl programmer. Problem is How implement an easy and fast Object persistence trought cgi scripts?
mmmh this my solution is a little bit unsecure :-)

Solution:
use Data::Dumper!

Here an example:

On the fisrt script I generate a big object called $probeset
(something like: $probeset = Probeset -> new)
At the end of the first Script I have stored a lot of informations into this object...
sending all this DATA with a POST could be a crazy thing so...

First script: Dump Object
use Probeset;  # that is my module
use Data::Dumper;

my $store = Data::Dumper -> Dump ([$probeset], [qw(probeset)]);
open (DUMP, "> $file);
print DUMP $store;
close DUMP;

[download]

And now the file DUMP contain an hash of this format:
$probeset = bless( {
                     '_genechip' => 'Human Genome U133A Array',
                     '_probeset_id' => '1007_s_at',
                     '_affy_date' => '2004-12-07',
                     '_chipcode' => 'HG_U133A',
[ ...}
                     '_trans_id' => '????',
                     '_exons_num' => '????',
                     '_organism' => 'Homo sapiens'
                   }, 'Probeset' );

[download]

Second Script take the DUMPED object and Eval IT
use Probeset;
open  (DUMP, "< $tempdump") or die "Can't open dumping file!";
my $obj='';
my $line;
while ($line = <DUMP>) {
    $obj .= $line;
}

my $probeset;
eval $obj;

[download]

And you made the Trick!
Now the second script have in memory the same object that we have generated into the first script with the same Data.
The Only problem that I have notice in this snippet is this:
Object Dumping generate a File, so speed is probably dependent of your hard disk speed!

Regards Davide Rambaldi

In reply to (DON'T) use Data::Dumper to implement Object persistence by tucano

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