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Storing complex data structures using Storable

by blackadder (Hermit)
on Jan 27, 2010 at 18:52 UTC ( [id://819999] : perlquestion . print w/replies, xml ) Need Help??

blackadder has asked for the wisdom of the Perl Monks concerning the following question:

Dear Monks

Any reason please as why I cannot save a complex data structure ($datacenters) to the disk?

This is the snippet of script that extracts data from vmware virtual centre and uses storable to store to disk
#! c:/perl/bin/perl.exe # use strict; use Data::Dumper; use Storable qw(store retrieve freeze thaw dclone); use VMware::VILib; use VMware::VIRuntime; my $datacenter_views = Vim::find_entity_views( view_type=> 'Datace +nter'); foreach my $DataCenter (@$datacenter_views) { store(\$DataCenter, 'c:/DCDump') or die "Can't store %a in DCD +ump!\n"; } my $colref = retrieve('c:/DCDump'); die "Unable to retrieve from DCDump!\n" unless defined $colref; print Dumper $colref;
However, the error I get is this:
Can't store CODE items at blib\lib\ (autosplit into blib\li +b\auto\Storable\ line 264, <DATA> line 1, at C:\Scripts\sto line 48
Any help please? Thanks in advance


Replies are listed 'Best First'.
Re: Storing complex data structures using Storable
by kennethk (Abbot) on Jan 27, 2010 at 19:14 UTC
    The error says precisely why you cannot store the data structure - it contains a code reference (perlref). The Storable documentation explains how to store coderefs, but with the caveat that this has significant possible security implications.
Re: Storing complex data structures using Storable
by MidLifeXis (Monsignor) on Jan 27, 2010 at 19:22 UTC

    Try the suggestion at Storable's section on code references [Note: was down when I posted this. I hope I have the right reference. --MLX ].

    It is said that "only perl can parse Perl." I don't even come close until my 3rd cup of coffee. --MidLifeXis

Re: Storing complex data structures using Storable
by BioLion (Curate) on Jan 28, 2010 at 15:18 UTC

    I had a similar problem a while back and pople had some really helpful suggestions : Storable Objects. HTH.

    Just a something something...