use strict;
use warnings;
+use MRO::Compat;
+use mro 'c3';
+
+use DBIx::Class::Optional::Dependencies;
+
use vars qw($VERSION);
use base qw/DBIx::Class::Componentised Class::Accessor::Grouped/;
use DBIx::Class::StartupCheck;
-
-sub mk_classdata {
+sub mk_classdata {
shift->mk_classaccessor(@_);
}
sub mk_classaccessor {
my $self = shift;
- $self->mk_group_accessors('inherited', $_[0]);
+ $self->mk_group_accessors('inherited', $_[0]);
$self->set_inherited(@_) if @_ > 1;
}
# Always remember to do all digits for the version even if they're 0
# i.e. first release of 0.XX *must* be 0.XX000. This avoids fBSD ports
# brain damage and presumably various other packaging systems too
+$VERSION = '0.08123_01';
-$VERSION = '0.08010';
+$VERSION = eval $VERSION if $VERSION =~ /_/; # numify for warning-free dev releases
sub MODIFY_CODE_ATTRIBUTES {
my ($class,$code,@attrs) = @_;
sub _attr_cache {
my $self = shift;
my $cache = $self->can('__attr_cache') ? $self->__attr_cache : {};
- my $rest = eval { $self->next::method };
- return $@ ? $cache : { %$cache, %$rest };
+
+ return {
+ %$cache,
+ %{ $self->maybe::next::method || {} },
+ };
}
1;
DBIx::Class - Extensible and flexible object <-> relational mapper.
+=head1 GETTING HELP/SUPPORT
+
+The community can be found via:
+
+=over
+
+=item * IRC: irc.perl.org#dbix-class
+
+=for html
+<a href="http://mibbit.com/chat/#dbix-class@irc.perl.org">(click for instant chatroom login)</a>
+
+=item * Mailing list: L<http://lists.scsys.co.uk/mailman/listinfo/dbix-class>
+
+=item * RT Bug Tracker: L<https://rt.cpan.org/Dist/Display.html?Queue=DBIx-Class>
+
+=item * gitweb: L<http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=dbsrgits/DBIx-Class.git>
+
+=item * git: L<git://git.shadowcat.co.uk/dbsrgits/DBIx-Class.git>
+
+=back
+
=head1 SYNOPSIS
-Create a schema class called DB/Main.pm:
+Create a schema class called MyDB/Schema.pm:
- package DB::Main;
+ package MyDB::Schema;
use base qw/DBIx::Class::Schema/;
- __PACKAGE__->load_classes();
+ __PACKAGE__->load_namespaces();
1;
-Create a table class to represent artists, who have many CDs, in DB/Main/Artist.pm:
+Create a result class to represent artists, who have many CDs, in
+MyDB/Schema/Result/Artist.pm:
- package DB::Main::Artist;
- use base qw/DBIx::Class/;
+See L<DBIx::Class::ResultSource> for docs on defining result classes.
+
+ package MyDB::Schema::Result::Artist;
+ use base qw/DBIx::Class::Core/;
- __PACKAGE__->load_components(qw/PK::Auto Core/);
__PACKAGE__->table('artist');
__PACKAGE__->add_columns(qw/ artistid name /);
__PACKAGE__->set_primary_key('artistid');
- __PACKAGE__->has_many(cds => 'DB::Main::CD');
+ __PACKAGE__->has_many(cds => 'MyDB::Schema::Result::CD');
1;
-A table class to represent a CD, which belongs to an artist, in DB/Main/CD.pm:
+A result class to represent a CD, which belongs to an artist, in
+MyDB/Schema/Result/CD.pm:
- package DB::Main::CD;
- use base qw/DBIx::Class/;
+ package MyDB::Schema::Result::CD;
+ use base qw/DBIx::Class::Core/;
- __PACKAGE__->load_components(qw/PK::Auto Core/);
+ __PACKAGE__->load_components(qw/InflateColumn::DateTime/);
__PACKAGE__->table('cd');
- __PACKAGE__->add_columns(qw/ cdid artist title year /);
+ __PACKAGE__->add_columns(qw/ cdid artistid title year /);
__PACKAGE__->set_primary_key('cdid');
- __PACKAGE__->belongs_to(artist => 'DB::Main::Artist');
+ __PACKAGE__->belongs_to(artist => 'MyDB::Schema::Artist', 'artistid');
1;
Then you can use these classes in your application's code:
# Connect to your database.
- use DB::Main;
- my $schema = DB::Main->connect($dbi_dsn, $user, $pass, \%dbi_params);
+ use MyDB::Schema;
+ my $schema = MyDB::Schema->connect($dbi_dsn, $user, $pass, \%dbi_params);
# Query for all artists and put them in an array,
# or retrieve them as a result set object.
+ # $schema->resultset returns a DBIx::Class::ResultSet
my @all_artists = $schema->resultset('Artist')->all;
my $all_artists_rs = $schema->resultset('Artist');
+ # Output all artists names
+ # $artist here is a DBIx::Class::Row, which has accessors
+ # for all its columns. Rows are also subclasses of your Result class.
+ foreach $artist (@all_artists) {
+ print $artist->name, "\n";
+ }
+
# Create a result set to search for artists.
# This does not query the DB.
my $johns_rs = $schema->resultset('Artist')->search(
# Execute a joined query to get the cds.
my @all_john_cds = $johns_rs->search_related('cds')->all;
- # Fetch only the next row.
+ # Fetch the next available row.
my $first_john = $johns_rs->next;
# Specify ORDER BY on the query.
{ order_by => 'title' }
);
- # Create a result set that will fetch the artist relationship
+ # Create a result set that will fetch the artist data
# at the same time as it fetches CDs, using only one query.
my $millennium_cds_rs = $schema->resultset('CD')->search(
{ year => 2000 },
);
my $cd = $millennium_cds_rs->next; # SELECT ... FROM cds JOIN artists ...
- my $cd_artist_name = $cd->artist->name; # Already has the data so no query
+ my $cd_artist_name = $cd->artist->name; # Already has the data so no 2nd query
# new() makes a DBIx::Class::Row object but doesnt insert it into the DB.
# create() is the same as new() then insert().
$schema->txn_do(sub { $new_cd->update }); # Runs the update in a transaction
- $millennium_cds_rs->update({ year => 2002 }); # Single-query bulk update
+ # change the year of all the millennium CDs at once
+ $millennium_cds_rs->update({ year => 2002 });
=head1 DESCRIPTION
This is an SQL to OO mapper with an object API inspired by L<Class::DBI>
-(and a compatibility layer as a springboard for porting) and a resultset API
+(with a compatibility layer as a springboard for porting) and a resultset API
that allows abstract encapsulation of database operations. It aims to make
representing queries in your code as perl-ish as possible while still
providing access to as many of the capabilities of the database as possible,
including retrieving related records from multiple tables in a single query,
-JOIN, LEFT JOIN, COUNT, DISTINCT, GROUP BY and HAVING support.
+JOIN, LEFT JOIN, COUNT, DISTINCT, GROUP BY, ORDER BY and HAVING support.
DBIx::Class can handle multi-column primary and foreign keys, complex
queries and database-level paging, and does its best to only query the
are generally made to CPAN before the branch for the next release is
merged back to trunk for a major release.
-The community can be found via:
-
- Mailing list: http://lists.scsys.co.uk/mailman/listinfo/dbix-class/
-
- SVN: http://dev.catalyst.perl.org/repos/bast/DBIx-Class/
-
- SVNWeb: http://dev.catalyst.perl.org/svnweb/bast/browse/DBIx-Class/
-
- IRC: irc.perl.org#dbix-class
-
=head1 WHERE TO GO NEXT
L<DBIx::Class::Manual::DocMap> lists each task you might want help on, and
=head1 CONTRIBUTORS
-abraxxa: Alexander Hartmaier <alex_hartmaier@hotmail.com>
+abraxxa: Alexander Hartmaier <abraxxa@cpan.org>
aherzog: Adam Herzog <adam@herzogdesigns.com>
+Alexander Keusch <cpan@keusch.at>
+
+amoore: Andrew Moore <amoore@cpan.org>
+
andyg: Andy Grundman <andy@hybridized.org>
ank: Andres Kievsky
+arcanez: Justin Hunter <justin.d.hunter@gmail.com>
+
ash: Ash Berlin <ash@cpan.org>
bert: Norbert Csongradi <bert@cpan.org>
bluefeet: Aran Deltac <bluefeet@cpan.org>
-captainL: Luke Saunders <luke.saunders@gmail.com>
+boghead: Bryan Beeley <cpan@beeley.org>
+
+bricas: Brian Cassidy <bricas@cpan.org>
+
+brunov: Bruno Vecchi <vecchi.b@gmail.com>
+
+caelum: Rafael Kitover <rkitover@cpan.org>
castaway: Jess Robinson
da5id: David Jack Olrik <djo@cpan.org>
+debolaz: Anders Nor Berle <berle@cpan.org>
+
+dew: Dan Thomas <dan@godders.org>
+
dkubb: Dan Kubb <dan.kubb-cpan@onautopilot.com>
dnm: Justin Wheeler <jwheeler@datademons.com>
-draven: Marcus Ramberg <mramberg@cpan.org>
+dpetrov: Dimitar Petrov <mitakaa@gmail.com>
dwc: Daniel Westermann-Clark <danieltwc@cpan.org>
dyfrgi: Michael Leuchtenburg <michael@slashhome.org>
+frew: Arthur Axel "fREW" Schmidt <frioux@gmail.com>
+
+goraxe: Gordon Irving <goraxe@cpan.org>
+
gphat: Cory G Watson <gphat@cpan.org>
+groditi: Guillermo Roditi <groditi@cpan.org>
+
+Haarg: Graham Knop <haarg@haarg.org>
+
+hobbs: Andrew Rodland <arodland@cpan.org>
+
+ilmari: Dagfinn Ilmari MannsE<aring>ker <ilmari@ilmari.org>
+
+jasonmay: Jason May <jason.a.may@gmail.com>
+
jesper: Jesper Krogh
+jgoulah: John Goulah <jgoulah@cpan.org>
+
jguenther: Justin Guenther <jguenther@cpan.org>
+jhannah: Jay Hannah <jay@jays.net>
+
jnapiorkowski: John Napiorkowski <jjn1056@yahoo.com>
jon: Jon Schutz <jjschutz@cpan.org>
konobi: Scott McWhirter
-LTJake: Brian Cassidy <bricas@cpan.org>
+lukes: Luke Saunders <luke.saunders@gmail.com>
+
+marcus: Marcus Ramberg <mramberg@cpan.org>
mattlaw: Matt Lawrence
+michaelr: Michael Reddick <michael.reddick@gmail.com>
+
ned: Neil de Carteret
nigel: Nigel Metheringham <nigelm@cpan.org>
ningu: David Kamholz <dkamholz@cpan.org>
+Nniuq: Ron "Quinn" Straight" <quinnfazigu@gmail.org>
+
+norbi: Norbert Buchmuller <norbi@nix.hu>
+
+nuba: Nuba Princigalli <nuba@cpan.org>
+
Numa: Dan Sully <daniel@cpan.org>
+ovid: Curtis "Ovid" Poe <ovid@cpan.org>
+
oyse: Øystein Torget <oystein.torget@dnv.com>
paulm: Paul Makepeace
perigrin: Chris Prather <chris@prather.org>
+peter: Peter Collingbourne <peter@pcc.me.uk>
+
phaylon: Robert Sedlacek <phaylon@dunkelheit.at>
+plu: Johannes Plunien <plu@cpan.org>
+
+Possum: Daniel LeWarne <possum@cpan.org>
+
quicksilver: Jules Bean
+rafl: Florian Ragwitz <rafl@debian.org>
+
+rainboxx: Matthias Dietrich <perl@rb.ly>
+
+rbo: Robert Bohne <rbo@cpan.org>
+
+rbuels: Robert Buels <rmb32@cornell.edu>
+
+rdj: Ryan D Johnson <ryan@innerfence.com>
+
+ribasushi: Peter Rabbitson <ribasushi@cpan.org>
+
+rjbs: Ricardo Signes <rjbs@cpan.org>
+
+robkinyon: Rob Kinyon <rkinyon@cpan.org>
+
+Roman: Roman Filippov <romanf@cpan.org>
+
sc_: Just Another Perl Hacker
scotty: Scotty Allen <scotty@scottyallen.com>
semifor: Marc Mims <marc@questright.com>
+solomon: Jared Johnson <jaredj@nmgi.com>
+
+spb: Stephen Bennett <stephen@freenode.net>
+
sszabo: Stephan Szabo <sszabo@bigpanda.com>
+teejay : Aaron Trevena <teejay@cpan.org>
+
Todd Lipcon
Tom Hukins
+tonvoon: Ton Voon <tonvoon@cpan.org>
+
+triode: Pete Gamache <gamache@cpan.org>
+
typester: Daisuke Murase <typester@cpan.org>
victori: Victor Igumnov <victori@cpan.org>
willert: Sebastian Willert <willert@cpan.org>
+wreis: Wallace Reis <wreis@cpan.org>
+
zamolxes: Bogdan Lucaciu <bogdan@wiz.ro>
+=head1 COPYRIGHT
+
+Copyright (c) 2005 - 2010 the DBIx::Class L</AUTHOR> and L</CONTRIBUTORS>
+as listed above.
+
=head1 LICENSE
-You may distribute this code under the same terms as Perl itself.
+This library is free software and may be distributed under the same terms
+as perl itself.
=cut