only add rels once when seen repeatedly

[dbsrgits/DBIx-Class.git] / t / lib / DBICTest / Schema / CD.pm

package # hide from PAUSE
    DBICTest::Schema::CD;

use warnings;
use strict;

use base qw/DBICTest::BaseResult/;

# this tests table name as scalar ref
# DO NOT REMOVE THE \
__PACKAGE__->table(\'cd');

__PACKAGE__->add_columns(
  'cdid' => {
    data_type => 'integer',
    is_auto_increment => 1,
  },
  'artist' => {
    data_type => 'integer',
    rename_for_dq => 'artist_id',
  },
  'title' => {
    data_type => 'varchar',
    size      => 100,
  },
  'year' => {
    data_type => 'varchar',
    size      => 100,
  },
  'genreid' => {
    data_type => 'integer',
    is_nullable => 1,
    accessor => undef,
  },
  'single_track' => {
    data_type => 'integer',
    is_nullable => 1,
    is_foreign_key => 1,
  }
);
__PACKAGE__->set_primary_key('cdid');
__PACKAGE__->add_unique_constraint([ qw/artist title/ ]);

__PACKAGE__->belongs_to( artist => 'DBICTest::Schema::Artist', undef, {
    is_deferrable => 1,
    proxy => { artist_name => 'name' },
});
__PACKAGE__->belongs_to( very_long_artist_relationship => 'DBICTest::Schema::Artist', 'artist', {
    is_deferrable => 1,
});

# in case this is a single-cd it promotes a track from another cd
__PACKAGE__->belongs_to( single_track => 'DBICTest::Schema::Track',
  { 'foreign.trackid' => 'self.single_track' },
  { join_type => 'left'},
);

# add a non-left single relationship for the complex prefetch tests
__PACKAGE__->belongs_to( existing_single_track => 'DBICTest::Schema::Track',
  { 'foreign.trackid' => 'self.single_track' },
);

__PACKAGE__->has_many( tracks => 'DBICTest::Schema::Track' );
__PACKAGE__->has_many(
    tags => 'DBICTest::Schema::Tag', undef,
    { order_by => 'tag' },
);
__PACKAGE__->has_many(
    cd_to_producer => 'DBICTest::Schema::CD_to_Producer' => 'cd'
);

# the undef condition in this rel is *deliberate*
# tests oddball legacy syntax
__PACKAGE__->might_have(
    liner_notes => 'DBICTest::Schema::LinerNotes', undef,
    { proxy => [ qw/notes/ ] },
);
__PACKAGE__->might_have(artwork => 'DBICTest::Schema::Artwork', 'cd_id');
__PACKAGE__->has_one(mandatory_artwork => 'DBICTest::Schema::Artwork', 'cd_id');

__PACKAGE__->many_to_many( producers => cd_to_producer => 'producer' );
__PACKAGE__->many_to_many(
    producers_sorted => cd_to_producer => 'producer',
    { order_by => 'producer.name' },
);

__PACKAGE__->belongs_to('genre', 'DBICTest::Schema::Genre',
    'genreid',
    {
        join_type => 'left',
        on_delete => 'SET NULL',
        on_update => 'CASCADE',
    },
);

#This second relationship was added to test the short-circuiting of pointless
#queries provided by undef_on_null_fk. the relevant test in 66relationship.t
__PACKAGE__->belongs_to('genre_inefficient', 'DBICTest::Schema::Genre',
    { 'foreign.genreid' => 'self.genreid' },
    {
        join_type => 'left',
        on_delete => 'SET NULL',
        on_update => 'CASCADE',
        undef_on_null_fk => 0,
    },
);


# This is insane. Don't ever do anything like that
# This is for testing purposes only!

# mst: mo: DBIC is an "object relational mapper"
# mst: mo: not an "object relational hider-because-mo-doesn't-understand-databases
# ribasushi: mo: try it with a subselect nevertheless, I'd love to be proven wrong
# ribasushi: mo: does sqlite actually take this?
# ribasushi: an order in a correlated subquery is insane - how long does it take you on real data?

__PACKAGE__->might_have(
    'last_track',
    'DBICTest::Schema::Track',
    sub {
        my $args = shift;
        return (
            {
                "$args->{foreign_alias}.trackid" => { '=' =>
                    $args->{self_resultsource}->schema->resultset('Track')->search(
                       { 'correlated_tracks.cd' => { -ident => "$args->{self_alias}.cdid" } },
                       {
                          order_by => { -desc => 'position' },
                          rows     => 1,
                          alias    => 'correlated_tracks',
                          columns  => ['trackid']
                       },
                    )->as_query
                }
            }
        );
    },
);

1;