For what its worth, this is what sqlt comes up with

package DBI;

# 
# Created by SQL::Translator::Producer::ClassDBI
# Created on Fri May 21 14:05:57 2004
# 

use strict;
use base 'Class::DBI::mysql';

DBI->set_db('Main', 'dbi:mysql:_', '', '');

# -------------------------------------------------------------------
package baseitems;
use base 'DBI';
use Class::DBI::Pager;

baseitems->set_up_table('baseitems');


#
# Primary key accessor
#
sub baseitems {
    shift->id
}

sub itemss {
    return shift->items_id
}

baseitems->has_many(
    'items_id', 'items' => 'id'
);

# -------------------------------------------------------------------
package items;
use base 'DBI';
use Class::DBI::Pager;

items->set_up_table('items');


#
# Primary key accessor
#
sub items {
    shift->id
}

items->has_a(
    id => 'baseitems'
);

sub items {
    return shift->id
}

sub codess {
    return shift->codes_id
}

items->has_many(
    'codes_id', 'codes' => 'id'
);

items->has_many(
    'codes_subid', 'codes' => 'subid'
);

# -------------------------------------------------------------------
package codes;
use base 'DBI';
use Class::DBI::Pager;

codes->set_up_table('codes');


codes->has_a(
    id => 'items'
);

sub codes {
    return shift->id
}

codes->has_a(
    subid => 'items'
);

sub codes {
    return shift->subid
}

1;
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