X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass.pm;h=75bedf68812f1867d71803adb06cd082a6cc99d5;hb=249963d4c07b676fdd1c186361bebfe4e0186882;hp=64bec50966b603a003d1c7397c8d4c56f04f7ec1;hpb=637ca936ff3aeee87af89aaaf75e2035c29576f8;p=dbsrgits%2FDBIx-Class.git diff --git a/lib/DBIx/Class.pm b/lib/DBIx/Class.pm index 64bec50..75bedf6 100644 --- a/lib/DBIx/Class.pm +++ b/lib/DBIx/Class.pm @@ -4,30 +4,43 @@ use strict; use warnings; use vars qw($VERSION); -use base qw/DBIx::Class::Componentised Class::Data::Accessor/; +use base qw/DBIx::Class::Componentised Class::Accessor::Grouped/; +use DBIx::Class::StartupCheck; + + +sub mk_classdata { + shift->mk_classaccessor(@_); +} + +sub mk_classaccessor { + my $self = shift; + $self->mk_group_accessors('inherited', $_[0]); + $self->set_inherited(@_) if @_ > 1; +} -sub mk_classdata { shift->mk_classaccessor(@_); } sub component_base_class { 'DBIx::Class' } # Always remember to do all digits for the version even if they're 0 # i.e. first release of 0.XX *must* be 0.XX000. This avoids fBSD ports # brain damage and presumably various other packaging systems too -$VERSION = '0.06000'; +$VERSION = '0.08099_02'; + +$VERSION = eval $VERSION; # numify for warning-free dev releases sub MODIFY_CODE_ATTRIBUTES { - my ($class,$code,@attrs) = @_; - $class->mk_classdata('__attr_cache' => {}) - unless $class->can('__attr_cache'); - $class->__attr_cache->{$code} = [@attrs]; - return (); + my ($class,$code,@attrs) = @_; + $class->mk_classdata('__attr_cache' => {}) + unless $class->can('__attr_cache'); + $class->__attr_cache->{$code} = [@attrs]; + return (); } 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 }; + my $self = shift; + my $cache = $self->can('__attr_cache') ? $self->__attr_cache : {}; + my $rest = eval { $self->next::method }; + return $@ ? $cache : { %$cache, %$rest }; } 1; @@ -36,48 +49,62 @@ sub _attr_cache { DBIx::Class - Extensible and flexible object <-> relational mapper. +=head1 GETTING HELP/SUPPORT + +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 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(); 1; -Create a table class to represent artists, who have many CDs, in DB/Main/Artist.pm: +Create a table class to represent artists, who have many CDs, in +MyDB/Schema/Artist.pm: - package DB::Main::Artist; + package MyDB::Schema::Artist; use base qw/DBIx::Class/; - __PACKAGE__->load_components(qw/PK::Auto Core/); + __PACKAGE__->load_components(qw/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::CD'); 1; -A table class to represent a CD, which belongs to an artist, in DB/Main/CD.pm: +A table class to represent a CD, which belongs to an artist, in +MyDB/Schema/CD.pm: - package DB::Main::CD; + package MyDB::Schema::CD; use base qw/DBIx::Class/; - __PACKAGE__->load_components(qw/PK::Auto Core/); + __PACKAGE__->load_components(qw/Core/); __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. @@ -87,7 +114,7 @@ Then you can use these classes in your application's code: # Create a result set to search for artists. # This does not query the DB. my $johns_rs = $schema->resultset('Artist')->search( - # Build your WHERE using an L structure: + # Build your WHERE using an SQL::Abstract structure: { name => { like => 'John%' } } ); @@ -103,7 +130,7 @@ Then you can use these classes in your application's code: { 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 }, @@ -111,8 +138,10 @@ Then you can use these classes in your application's code: ); 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(). my $new_cd = $schema->resultset('CD')->new({ title => 'Spoon' }); $new_cd->artist($cd->artist); $new_cd->insert; # Auto-increment primary key filled in after INSERT @@ -120,17 +149,18 @@ Then you can use these classes in your application's code: $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 -(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 @@ -141,113 +171,138 @@ support for SQLite, MySQL, PostgreSQL, Oracle, SQL Server and DB2 and is known to be used in production on at least the first four, and is fork- and thread-safe out of the box (although your DBD may not be). -This project is still under rapid development, so features added in the -latest major release may not work 100% yet -- check the Changes if you run -into trouble, and beware of anything explicitly marked EXPERIMENTAL. Failing -test cases are *always* welcome and point releases are put out rapidly as -bugs are found and fixed. +This project is still under rapid development, so large new features may be +marked EXPERIMENTAL - such APIs are still usable but may have edge bugs. +Failing test cases are *always* welcome and point releases are put out rapidly +as bugs are found and fixed. -Even so, we do our best to maintain full backwards compatibility for published -APIs, since DBIx::Class is used in production in a number of organisations. -The test suite is quite substantial, and several developer releases are -generally made to CPAN before the -current branch is merged back to trunk for -a major release. +We do our best to maintain full backwards compatibility for published +APIs, since DBIx::Class is used in production in many organisations, +and even backwards incompatible changes to non-published APIs will be fixed +if they're reported and doing so doesn't cost the codebase anything. -The community can be found via: +The test suite is quite substantial, and several developer releases +are generally made to CPAN before the branch for the next release is +merged back to trunk for a major release. - Mailing list: http://lists.rawmode.org/mailman/listinfo/dbix-class/ - - SVN: http://dev.catalyst.perl.org/repos/bast/trunk/DBIx-Class/ +=head1 WHERE TO GO NEXT - Wiki: http://dbix-class.shadowcatsystems.co.uk/ +L lists each task you might want help on, and +the modules where you will find documentation. - IRC: irc.perl.org#dbix-class +=head1 AUTHOR -=head1 WHERE TO GO NEXT +mst: Matt S. Trout -=over 4 +(I mostly consider myself "project founder" these days but the AUTHOR heading +is traditional :) -=item L - user's manual +=head1 CONTRIBUTORS -=item L - DBIC Core Classes +abraxxa: Alexander Hartmaier -=item L - L Compat layer +aherzog: Adam Herzog -=item L - schema and connection container +andyg: Andy Grundman -=item L - tables and table-like things +ank: Andres Kievsky -=item L - encapsulates a query and its results +ash: Ash Berlin -=item L - row-level methods +bert: Norbert Csongradi -=item L - primary key methods +blblack: Brandon L. Black -=item L - relationships between tables +bluefeet: Aran Deltac -=back +captainL: Luke Saunders -=head1 AUTHOR +castaway: Jess Robinson -mst: Matt S. Trout +claco: Christopher H. Laco -=head1 CONTRIBUTORS +clkao: CL Kao -abraxxa: Alexander Hartmaier +da5id: David Jack Olrik -andyg: Andy Grundman +debolaz: Anders Nor Berle -ank: Andres Kievsky +dkubb: Dan Kubb -blblack: Brandon Black +dnm: Justin Wheeler -LTJake: Brian Cassidy +draven: Marcus Ramberg -claco: Christopher H. Laco +dwc: Daniel Westermann-Clark -clkao: CL Kao +dyfrgi: Michael Leuchtenburg -typester: Daisuke Murase +gphat: Cory G Watson -dkubb: Dan Kubb +jesper: Jesper Krogh -Numa: Dan Sully +jguenther: Justin Guenther -dwc: Daniel Westermann-Clark +jnapiorkowski: John Napiorkowski -ningu: David Kamholz +jon: Jon Schutz -jesper: Jesper Krogh +jshirley: J. Shirley -castaway: Jess Robinson +konobi: Scott McWhirter -quicksilver: Jules Bean +LTJake: Brian Cassidy -jguenther: Justin Guenther +mattlaw: Matt Lawrence -draven: Marcus Ramberg +ned: Neil de Carteret nigel: Nigel Metheringham +ningu: David Kamholz + +Numa: Dan Sully + +oyse: Øystein Torget + paulm: Paul Makepeace +penguin: K J Cheetham + +perigrin: Chris Prather + phaylon: Robert Sedlacek -sc_: Just Another Perl Hacker +quicksilver: Jules Bean -konobi: Scott McWhirter +rdj: Ryan D Johnson + +sc_: Just Another Perl Hacker scotty: Scotty Allen +semifor: Marc Mims + sszabo: Stephan Szabo +teejay : Aaron Trevena + Todd Lipcon +Tom Hukins + +typester: Daisuke Murase + +victori: Victor Igumnov + wdh: Will Hawes +willert: Sebastian Willert + +zamolxes: Bogdan Lucaciu + =head1 LICENSE You may distribute this code under the same terms as Perl itself. =cut -