Just to let people now,
It works fine with previous version of Moose (0.98)
but definitively not with >0.98.... :(
Any clue?
Thanks
On 06/14/2010 11:41 AM, Emmanuel Quevillon wrote:
> On 06/14/2010 11:27 AM, Jesse Luehrs wrote:
>> On Mon, Jun 14, 2010 at 11:20:15AM +0200, Emmanuel Quevillon wrote:
>>> Hi Moose people,
>>>
>>> I must confess I'm not really ease with Moose behavior, but I get a
>>> strange error from it when I start my perl script.
>>>
>>> Here it is :
>>>
>>> Couldn't load class (BiblioList::Abstract) because: Couldn't load
>>> class (BiblioList::Root) because: BiblioList::Root already has a
>>> metaclass, but it does not inherit Moose::Meta::Class
>>> (Class::MOP::Class=HASH(0x2e79840)). at
>>> /usr/local/lib/perl/5.10.1/Moose.pm line 166
>>
>> You should include the code that's causing this error; it's not really
>> possible to figure out what's wrong just from the message. Some
>> possibilities include a circular dependency between use/extends/etc
>> statements, or some part of the code accessing the BiblioList::Root
>> class before it actually gets loaded.
>>
>> -doy
> Hi Jesse,
>
> Ok, here is the hierarchy:
>
> ==> in script update_publications.pl :
>
> use BiblioList::Abstract::Updater;
>
> ...
>
> ==> Pkg BiblioList::Abstract::Updater :
>
> use BiblioList::Abstract::Processor;
> use BiblioList::Abstract::Comparator;
> ...
>
> ==> Pkg BiblioList::Abstract::Processor :
>
> ...
> extends 'BiblioList::Abstract';
> ...
>
> ==> Pkg BiblioList::Abstract :
>
> package BiblioList::Abstract;
>
> use Moose;
>
> extends 'BiblioList::Root';
>
> no Moose;
> 1;
>
>
> ==> Pkg BiblioList::Root :
>
>
> package BiblioList::Root;
>
> use strict;
> use warnings;
>
> use BiblioList::Config;
> use BiblioList::Exception;
> use BiblioList::Exception::System;
> use BiblioList::Exception::FileNotFound;
> use BiblioList::Exception::DBerror;
> use BiblioList::Exception::ParseError;
> use BiblioList::Exception::BadParameter;
>
> use Moose;
>
> has '_verbose' => (
> is => 'rw',
> isa => 'Bool',
> default => 0,
> );
>
> has '_debug' => (
> is => 'rw',
> isa => 'Bool',
> default => 0,
> );
>
> has 'config' => (
> is => 'rw',
> isa => 'BiblioList::Config',
> predicate => 'has_config',
> default => sub { BiblioList::Config->new();},
> );
>
> no Moose;
>
> ...
>
> 1;
>
>
>
> By the way, all my modules BiblioList::* have a called to
> extends 'BiblioList::Root';
>
> This is the way all these package are called successively :
>
> And here is the bottom trace thrown :
>
> ....
>
>
> Moose::extends('BiblioList::Abstract') called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Processor.pm
> line 7
> require BiblioList/Abstract/Processor.pm called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Updater.pm
> line 3
> BiblioList::Abstract::Updater::BEGIN() called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract.pm
> line 0
> eval {...} called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract.pm
> line 0
> require BiblioList/Abstract/Updater.pm called at
> update_publications.pl line 9
> main::BEGIN() called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract.pm
> line 0
> eval {...} called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract.pm
> line 0
> Compilation failed in require at
> /usr/local/lib/perl/5.10.1/Class/MOP.pm line 114.
> at /usr/local/lib/perl/5.10.1/Class/MOP.pm line 120
> Class::MOP::__ANON__('Couldn\'t load class
> (BiblioList::Root) because: BiblioList::...') called at
> /usr/share/perl5/Try/Tiny.pm line 98
> Try::Tiny::try('CODE(0x1555e00)',
> 'Try::Tiny::Catch=REF(0x1de9978)') called at
> /usr/local/lib/perl/5.10.1/Class/MOP.pm line 125
>
> Class::MOP::load_first_existing_class('BiblioList::Abstract') called
> at /usr/local/lib/perl/5.10.1/Class/MOP.pm line 137
> Class::MOP::load_class('BiblioList::Abstract', undef) called
> at /usr/local/lib/perl/5.10.1/Moose/Meta/Class.pm line 288
> Moose::Meta::Class::superclasses(undef,
> 'BiblioList::Abstract') called at
> /usr/local/lib/perl/5.10.1/Moose.pm line 53
> Moose::extends('Moose::Meta::Class=HASH(0x1cf2150)',
> 'BiblioList::Abstract') called at
> /usr/local/lib/perl/5.10.1/Moose/Exporter.pm line 293
> Moose::extends('BiblioList::Abstract') called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Processor.pm
> line 7
> require BiblioList/Abstract/Processor.pm called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Updater.pm
> line 3
> BiblioList::Abstract::Updater::BEGIN() called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Processor.pm
> line 0
> eval {...} called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Processor.pm
> line 0
> require BiblioList/Abstract/Updater.pm called at
> update_publications.pl line 9
> main::BEGIN() called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Processor.pm
> line 0
> eval {...} called at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Processor.pm
> line 0
> Compilation failed in require at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Updater.pm
> line 3.
> BEGIN failed--compilation aborted at
> /home/tuco/src/perl/projects/Catalyst/BiblioList/legiobiblio/lib/BiblioList/Abstract/Updater.pm
> line 3.
> Compilation failed in require at update_publications.pl line 9.
> BEGIN failed--compilation aborted at update_publications.pl line 9.
> t...@gin script$
>
>
>
> But as you mentioned is it surely a circular dependency that causes
> the problem.
>
> Thanks anyway
>
--
-------------------------
Emmanuel Quevillon
Biological Software and Databases Group
Institut Pasteur
+33 1 44 38 95 98
tuco at_ pasteur dot fr
-------------------------
