[dbsrgits/DBIx-Class.git] / t / run / 16joins.tl

use strict;
use warnings;  

use Test::More;
use lib qw(t/lib);
use DBICTest;

my $schema = DBICTest::init_schema();

use IO::File;

BEGIN {
    eval "use DBD::SQLite";
    plan $@
        ? ( skip_all => 'needs DBD::SQLite for testing' )
        : ( tests => 44 );
}

# figure out if we've got a version of sqlite that is older than 3.2.6, in
# which case COUNT(DISTINCT()) doesn't work
my $is_broken_sqlite = 0;
my ($sqlite_major_ver,$sqlite_minor_ver,$sqlite_patch_ver) =
    split /\./, $schema->storage->dbh->get_info(18);
if( $schema->storage->dbh->get_info(17) eq 'SQLite' &&
    ( ($sqlite_major_ver < 3) ||
      ($sqlite_major_ver == 3 && $sqlite_minor_ver < 2) ||
      ($sqlite_major_ver == 3 && $sqlite_minor_ver == 2 && $sqlite_patch_ver < 6) ) ) {
    $is_broken_sqlite = 1;
}

# test the abstract join => SQL generator
my $sa = new DBIC::SQL::Abstract;

my @j = (
    { child => 'person' },
    [ { father => 'person' }, { 'father.person_id' => 'child.father_id' }, ],
    [ { mother => 'person' }, { 'mother.person_id' => 'child.mother_id' } ],
);
my $match = 'person child JOIN person father ON ( father.person_id = '
          . 'child.father_id ) JOIN person mother ON ( mother.person_id '
          . '= child.mother_id )'
          ;
is( $sa->_recurse_from(@j), $match, 'join 1 ok' );

my @j2 = (
    { mother => 'person' },
    [   [   { child => 'person' },
            [   { father             => 'person' },
                { 'father.person_id' => 'child.father_id' }
            ]
        ],
        { 'mother.person_id' => 'child.mother_id' }
    ],
);
$match = 'person mother JOIN (person child JOIN person father ON ('
       . ' father.person_id = child.father_id )) ON ( mother.person_id = '
       . 'child.mother_id )'
       ;
is( $sa->_recurse_from(@j2), $match, 'join 2 ok' );

my @j3 = (
    { child => 'person' },
    [ { father => 'person', -join_type => 'inner' }, { 'father.person_id' => 'child.father_id' }, ],
    [ { mother => 'person', -join_type => 'inner'  }, { 'mother.person_id' => 'child.mother_id' } ],
);
$match = 'person child INNER JOIN person father ON ( father.person_id = '
          . 'child.father_id ) INNER JOIN person mother ON ( mother.person_id '
          . '= child.mother_id )'
          ;

is( $sa->_recurse_from(@j3), $match, 'join 3 (inner join) ok');

my $rs = $schema->resultset("CD")->search(
           { 'year' => 2001, 'artist.name' => 'Caterwauler McCrae' },
           { from => [ { 'me' => 'cd' },
                         [
                           { artist => 'artist' },
                           { 'me.artist' => 'artist.artistid' }
                         ] ] }
         );

cmp_ok( $rs + 0, '==', 1, "Single record in resultset");

is($rs->first->title, 'Forkful of bees', 'Correct record returned');

$rs = $schema->resultset("CD")->search(
           { 'year' => 2001, 'artist.name' => 'Caterwauler McCrae' },
           { join => 'artist' });

cmp_ok( $rs + 0, '==', 1, "Single record in resultset");

is($rs->first->title, 'Forkful of bees', 'Correct record returned');

$rs = $schema->resultset("CD")->search(
           { 'artist.name' => 'We Are Goth',
             'liner_notes.notes' => 'Kill Yourself!' },
           { join => [ qw/artist liner_notes/ ] });

cmp_ok( $rs + 0, '==', 1, "Single record in resultset");

is($rs->first->title, 'Come Be Depressed With Us', 'Correct record returned');

# when using join attribute, make sure slice()ing all objects has same count as all()
$rs = $schema->resultset("CD")->search(
    { 'artist' => 1 },
    { join => [qw/artist/], order_by => 'artist.name' }
);
cmp_ok( scalar $rs->all, '==', scalar $rs->slice(0, $rs->count - 1), 'slice() with join has same count as all()' );

eval { $rs->search(undef, { rows => 0, offset => 3 })->all; };

ok($@, "rows => 0 errors: $@");

$rs = $schema->resultset("Artist")->search(
        { 'liner_notes.notes' => 'Kill Yourself!' },
        { join => { 'cds' => 'liner_notes' } });

cmp_ok( $rs->count, '==', 1, "Single record in resultset");

is($rs->first->name, 'We Are Goth', 'Correct record returned');

$rs = $schema->resultset("CD")->search(
           { 'artist.name' => 'Caterwauler McCrae' },
           { prefetch => [ qw/artist liner_notes/ ],
             order_by => 'me.cdid' });

cmp_ok($rs + 0, '==', 3, 'Correct number of records returned');

my $queries = 0;
$schema->storage->debugcb(sub { $queries++ });

$queries = 0;
$schema->storage->debug(1);

my @cd = $rs->all;

is($cd[0]->title, 'Spoonful of bees', 'First record returned ok');

ok(!defined $cd[0]->liner_notes, 'No prefetch for NULL LEFT join');

is($cd[1]->{_relationship_data}{liner_notes}->notes, 'Buy Whiskey!', 'Prefetch for present LEFT JOIN');

is(ref $cd[1]->liner_notes, 'DBICTest::LinerNotes', 'Prefetch returns correct class');

is($cd[2]->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'Prefetch on parent object ok');

is($queries, 1, 'prefetch ran only 1 select statement');

$schema->storage->debug(0);

# test for partial prefetch via columns attr
my $cd = $schema->resultset('CD')->find(1,
    {
      columns => [qw/title artist.name/], 
      join => { 'artist' => {} }
    }
);
ok(eval { $cd->artist->name eq 'Caterwauler McCrae' }, 'single related column prefetched');

# start test for nested prefetch SELECT count
$queries = 0;
$schema->storage->debug(1);

$rs = $schema->resultset('Tag')->search(
  {},
  {
    prefetch => { cd => 'artist' }
  }
);

my $tag = $rs->first;

is( $tag->cd->title, 'Spoonful of bees', 'step 1 ok for nested prefetch' );

is( $tag->cd->artist->name, 'Caterwauler McCrae', 'step 2 ok for nested prefetch');

# count the SELECTs
#$selects++ if /SELECT(?!.*WHERE 1=0.*)/;
is($queries, 1, 'nested prefetch ran exactly 1 select statement (excluding column_info)');

$queries = 0;

$cd = $schema->resultset('CD')->find(1, { prefetch => 'artist' });

is($cd->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'artist prefetched correctly on find');

is($queries, 1, 'find with prefetch ran exactly 1 select statement (excluding column_info)');

$schema->storage->debug(0);

$rs = $schema->resultset('Tag')->search(
  {},
  {
    join => { cd => 'artist' },
    prefetch => { cd => 'artist' }
  }
);

cmp_ok( $rs->count, '>=', 0, 'nested prefetch does not duplicate joins' );

my ($artist) = $schema->resultset("Artist")->search({ 'cds.year' => 2001 },
                 { order_by => 'artistid DESC', join => 'cds' });

is($artist->name, 'Random Boy Band', "Join search by object ok");

my @cds = $schema->resultset("CD")->search({ 'liner_notes.notes' => 'Buy Merch!' },
                               { join => 'liner_notes' });

cmp_ok(scalar @cds, '==', 1, "Single CD retrieved via might_have");

is($cds[0]->title, "Generic Manufactured Singles", "Correct CD retrieved");

my @artists = $schema->resultset("Artist")->search({ 'tags.tag' => 'Shiny' },
                                       { join => { 'cds' => 'tags' } });

cmp_ok( @artists, '==', 2, "two-join search ok" );

$rs = $schema->resultset("CD")->search(
  {},
  { group_by => [qw/ title me.cdid /] }
);

SKIP: {
    skip "SQLite < 3.2.6 doesn't understand COUNT(DISTINCT())", 1
        if $is_broken_sqlite;
    cmp_ok( $rs->count, '==', 5, "count() ok after group_by on main pk" );
}

cmp_ok( scalar $rs->all, '==', 5, "all() returns same count as count() after group_by on main pk" );

$rs = $schema->resultset("CD")->search(
  {},
  { join => [qw/ artist /], group_by => [qw/ artist.name /] }
);

SKIP: {
    skip "SQLite < 3.2.6 doesn't understand COUNT(DISTINCT())", 1
        if $is_broken_sqlite;
    cmp_ok( $rs->count, '==', 3, "count() ok after group_by on related column" );
}

$rs = $schema->resultset("Artist")->search(
  {},
      { join => [qw/ cds /], group_by => [qw/ me.name /], having =>{ 'MAX(cds.cdid)'=> \'< 5' } }
);

cmp_ok( $rs->all, '==', 2, "results ok after group_by on related column with a having" );

$rs = $rs->search( undef, {  having =>{ 'count(*)'=> \'> 2' }});

cmp_ok( $rs->all, '==', 1, "count() ok after group_by on related column with a having" );

$rs = $schema->resultset("Artist")->search(
        { 'cds.title' => 'Spoonful of bees',
          'cds_2.title' => 'Forkful of bees' },
        { join => [ 'cds', 'cds' ] });

SKIP: {
    skip "SQLite < 3.2.6 doesn't understand COUNT(DISTINCT())", 1
        if $is_broken_sqlite;
    cmp_ok($rs->count, '==', 1, "single artist returned from multi-join");
}

is($rs->next->name, 'Caterwauler McCrae', "Correct artist returned");

$queries = 0;
$schema->storage->debug(1);

my $tree_like =
     $schema->resultset('TreeLike')->find(4,
       { join     => { parent => { parent => 'parent' } },
         prefetch => { parent => { parent => 'parent' } } });

is($tree_like->name, 'quux', 'Bottom of tree ok');
$tree_like = $tree_like->parent;
is($tree_like->name, 'baz', 'First level up ok');
$tree_like = $tree_like->parent;
is($tree_like->name, 'bar', 'Second level up ok');
$tree_like = $tree_like->parent;
is($tree_like->name, 'foo', 'Third level up ok');

$schema->storage->debug(0);

cmp_ok($queries, '==', 1, 'Only one query run');

# has_many resulting in an additional select if no records available despite prefetch
my $track = $schema->resultset("Artist")->create( {
  artistid  => 4,
  name      => 'Artist without CDs',
} );

$queries = 0;
$schema->storage->debug(1);

my $artist_without_cds = $schema->resultset("Artist")->find(4, {
    join        => [qw/ cds /],
    prefetch    => [qw/ cds /],
});
my @no_cds = $artist_without_cds->cds;

is($queries, 1, 'prefetch ran only 1 sql statement');

$schema->storage->debug(0);
Commit	Line	Data
70350518	1	use strict;
	2	use warnings;
	3
	4	use Test::More;
	5	use lib qw(t/lib);
	6	use DBICTest;
	7
	8	my $schema = DBICTest::init_schema();
0567538f	9
	10	use IO::File;
	11
	12	BEGIN {
	13	eval "use DBD::SQLite";
	14	plan $@
	15	? ( skip_all => 'needs DBD::SQLite for testing' )
0823196c	16	: ( tests => 44 );
0567538f	17	}
0567538f	18
58ff4acf	19	# figure out if we've got a version of sqlite that is older than 3.2.6, in
	20	# which case COUNT(DISTINCT()) doesn't work
	21	my $is_broken_sqlite = 0;
	22	my ($sqlite_major_ver,$sqlite_minor_ver,$sqlite_patch_ver) =
	23	split /\./, $schema->storage->dbh->get_info(18);
	24	if( $schema->storage->dbh->get_info(17) eq 'SQLite' &&
	25	( ($sqlite_major_ver < 3) \|\|
	26	($sqlite_major_ver == 3 && $sqlite_minor_ver < 2) \|\|
	27	($sqlite_major_ver == 3 && $sqlite_minor_ver == 2 && $sqlite_patch_ver < 6) ) ) {
	28	$is_broken_sqlite = 1;
	29	}
485f6e10	30
0567538f	31	# test the abstract join => SQL generator
	32	my $sa = new DBIC::SQL::Abstract;
	33
	34	my @j = (
	35	{ child => 'person' },
	36	[ { father => 'person' }, { 'father.person_id' => 'child.father_id' }, ],
	37	[ { mother => 'person' }, { 'mother.person_id' => 'child.mother_id' } ],
	38	);
	39	my $match = 'person child JOIN person father ON ( father.person_id = '
	40	. 'child.father_id ) JOIN person mother ON ( mother.person_id '
	41	. '= child.mother_id )'
	42	;
	43	is( $sa->_recurse_from(@j), $match, 'join 1 ok' );
	44
	45	my @j2 = (
	46	{ mother => 'person' },
	47	[ [ { child => 'person' },
	48	[ { father => 'person' },
	49	{ 'father.person_id' => 'child.father_id' }
	50	]
	51	],
	52	{ 'mother.person_id' => 'child.mother_id' }
	53	],
	54	);
	55	$match = 'person mother JOIN (person child JOIN person father ON ('
	56	. ' father.person_id = child.father_id )) ON ( mother.person_id = '
	57	. 'child.mother_id )'
	58	;
	59	is( $sa->_recurse_from(@j2), $match, 'join 2 ok' );
	60
	61	my @j3 = (
	62	{ child => 'person' },
	63	[ { father => 'person', -join_type => 'inner' }, { 'father.person_id' => 'child.father_id' }, ],
	64	[ { mother => 'person', -join_type => 'inner' }, { 'mother.person_id' => 'child.mother_id' } ],
	65	);
	66	$match = 'person child INNER JOIN person father ON ( father.person_id = '
	67	. 'child.father_id ) INNER JOIN person mother ON ( mother.person_id '
	68	. '= child.mother_id )'
	69	;
	70
	71	is( $sa->_recurse_from(@j3), $match, 'join 3 (inner join) ok');
	72
f9db5527	73	my $rs = $schema->resultset("CD")->search(
0567538f	74	{ 'year' => 2001, 'artist.name' => 'Caterwauler McCrae' },
	75	{ from => [ { 'me' => 'cd' },
	76	[
	77	{ artist => 'artist' },
	78	{ 'me.artist' => 'artist.artistid' }
	79	] ] }
	80	);
	81
ebaefbc2	82	cmp_ok( $rs + 0, '==', 1, "Single record in resultset");
0567538f	83
	84	is($rs->first->title, 'Forkful of bees', 'Correct record returned');
	85
f9db5527	86	$rs = $schema->resultset("CD")->search(
0567538f	87	{ 'year' => 2001, 'artist.name' => 'Caterwauler McCrae' },
	88	{ join => 'artist' });
	89
ebaefbc2	90	cmp_ok( $rs + 0, '==', 1, "Single record in resultset");
0567538f	91
	92	is($rs->first->title, 'Forkful of bees', 'Correct record returned');
	93
f9db5527	94	$rs = $schema->resultset("CD")->search(
0567538f	95	{ 'artist.name' => 'We Are Goth',
	96	'liner_notes.notes' => 'Kill Yourself!' },
	97	{ join => [ qw/artist liner_notes/ ] });
	98
ebaefbc2	99	cmp_ok( $rs + 0, '==', 1, "Single record in resultset");
0567538f	100
	101	is($rs->first->title, 'Come Be Depressed With Us', 'Correct record returned');
	102
8fe164b9	103	# when using join attribute, make sure slice()ing all objects has same count as all()
f9db5527	104	$rs = $schema->resultset("CD")->search(
8fe164b9	105	{ 'artist' => 1 },
	106	{ join => [qw/artist/], order_by => 'artist.name' }
	107	);
	108	cmp_ok( scalar $rs->all, '==', scalar $rs->slice(0, $rs->count - 1), 'slice() with join has same count as all()' );
	109
0823196c	110	eval { $rs->search(undef, { rows => 0, offset => 3 })->all; };
	111
	112	ok($@, "rows => 0 errors: $@");
	113
f9db5527	114	$rs = $schema->resultset("Artist")->search(
0567538f	115	{ 'liner_notes.notes' => 'Kill Yourself!' },
	116	{ join => { 'cds' => 'liner_notes' } });
	117
	118	cmp_ok( $rs->count, '==', 1, "Single record in resultset");
	119
	120	is($rs->first->name, 'We Are Goth', 'Correct record returned');
	121
f9db5527	122	$rs = $schema->resultset("CD")->search(
0567538f	123	{ 'artist.name' => 'Caterwauler McCrae' },
	124	{ prefetch => [ qw/artist liner_notes/ ],
	125	order_by => 'me.cdid' });
	126
ebaefbc2	127	cmp_ok($rs + 0, '==', 3, 'Correct number of records returned');
0567538f	128
d52170d4	129	my $queries = 0;
	130	$schema->storage->debugcb(sub { $queries++ });
	131
	132	$queries = 0;
	133	$schema->storage->debug(1);
0567538f	134
	135	my @cd = $rs->all;
	136
	137	is($cd[0]->title, 'Spoonful of bees', 'First record returned ok');
	138
7cd300ea	139	ok(!defined $cd[0]->liner_notes, 'No prefetch for NULL LEFT join');
0567538f	140
	141	is($cd[1]->{_relationship_data}{liner_notes}->notes, 'Buy Whiskey!', 'Prefetch for present LEFT JOIN');
	142
dd417d06	143	is(ref $cd[1]->liner_notes, 'DBICTest::LinerNotes', 'Prefetch returns correct class');
dd417d06	144
0567538f	145	is($cd[2]->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'Prefetch on parent object ok');
0567538f	146
d52170d4	147	is($queries, 1, 'prefetch ran only 1 select statement');
	148
	149	$schema->storage->debug(0);
0567538f	150
9b465d00	151	# test for partial prefetch via columns attr
d20bb28e	152	my $cd = $schema->resultset('CD')->find(1,
d20bb28e	153	{
9b465d00	154	columns => [qw/title artist.name/],
0e35aa05	155	join => { 'artist' => {} }
d20bb28e	156	}
	157	);
	158	ok(eval { $cd->artist->name eq 'Caterwauler McCrae' }, 'single related column prefetched');
	159
b3e8ac9b	160	# start test for nested prefetch SELECT count
d52170d4	161	$queries = 0;
d52170d4	162	$schema->storage->debug(1);
b3e8ac9b	163
	164	$rs = $schema->resultset('Tag')->search(
	165	{},
	166	{
	167	prefetch => { cd => 'artist' }
	168	}
	169	);
	170
	171	my $tag = $rs->first;
	172
	173	is( $tag->cd->title, 'Spoonful of bees', 'step 1 ok for nested prefetch' );
	174
	175	is( $tag->cd->artist->name, 'Caterwauler McCrae', 'step 2 ok for nested prefetch');
	176
	177	# count the SELECTs
d52170d4	178	#$selects++ if /SELECT(?!.WHERE 1=0.)/;
d52170d4	179	is($queries, 1, 'nested prefetch ran exactly 1 select statement (excluding column_info)');
b3e8ac9b	180
d52170d4	181	$queries = 0;
c5b7d799	182
d20bb28e	183	$cd = $schema->resultset('CD')->find(1, { prefetch => 'artist' });
c5b7d799	184
	185	is($cd->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'artist prefetched correctly on find');
	186
d52170d4	187	is($queries, 1, 'find with prefetch ran exactly 1 select statement (excluding column_info)');
	188
	189	$schema->storage->debug(0);
c5b7d799	190
b3e8ac9b	191	$rs = $schema->resultset('Tag')->search(
	192	{},
	193	{
	194	join => { cd => 'artist' },
	195	prefetch => { cd => 'artist' }
	196	}
	197	);
	198
	199	cmp_ok( $rs->count, '>=', 0, 'nested prefetch does not duplicate joins' );
	200
f9db5527	201	my ($artist) = $schema->resultset("Artist")->search({ 'cds.year' => 2001 },
0567538f	202	{ order_by => 'artistid DESC', join => 'cds' });
	203
	204	is($artist->name, 'Random Boy Band', "Join search by object ok");
	205
f9db5527	206	my @cds = $schema->resultset("CD")->search({ 'liner_notes.notes' => 'Buy Merch!' },
0567538f	207	{ join => 'liner_notes' });
	208
	209	cmp_ok(scalar @cds, '==', 1, "Single CD retrieved via might_have");
	210
	211	is($cds[0]->title, "Generic Manufactured Singles", "Correct CD retrieved");
	212
f9db5527	213	my @artists = $schema->resultset("Artist")->search({ 'tags.tag' => 'Shiny' },
0567538f	214	{ join => { 'cds' => 'tags' } });
	215
	216	cmp_ok( @artists, '==', 2, "two-join search ok" );
	217
15c382be	218	$rs = $schema->resultset("CD")->search(
	219	{},
	220	{ group_by => [qw/ title me.cdid /] }
	221	);
	222
485f6e10	223	SKIP: {
	224	skip "SQLite < 3.2.6 doesn't understand COUNT(DISTINCT())", 1
	225	if $is_broken_sqlite;
	226	cmp_ok( $rs->count, '==', 5, "count() ok after group_by on main pk" );
	227	}
15c382be	228
	229	cmp_ok( scalar $rs->all, '==', 5, "all() returns same count as count() after group_by on main pk" );
	230
	231	$rs = $schema->resultset("CD")->search(
	232	{},
	233	{ join => [qw/ artist /], group_by => [qw/ artist.name /] }
	234	);
	235
485f6e10	236	SKIP: {
	237	skip "SQLite < 3.2.6 doesn't understand COUNT(DISTINCT())", 1
	238	if $is_broken_sqlite;
	239	cmp_ok( $rs->count, '==', 3, "count() ok after group_by on related column" );
	240	}
15c382be	241
8839560b	242	$rs = $schema->resultset("Artist")->search(
6991aba3	243	{},
01c73d7b	244	{ join => [qw/ cds /], group_by => [qw/ me.name /], having =>{ 'MAX(cds.cdid)'=> \'< 5' } }
6991aba3	245	);
6991aba3	246
8839560b	247	cmp_ok( $rs->all, '==', 2, "results ok after group_by on related column with a having" );
6991aba3	248
01c73d7b	249	$rs = $rs->search( undef, { having =>{ 'count(*)'=> \'> 2' }});
6991aba3	250
8839560b	251	cmp_ok( $rs->all, '==', 1, "count() ok after group_by on related column with a having" );
489709af	252
	253	$rs = $schema->resultset("Artist")->search(
	254	{ 'cds.title' => 'Spoonful of bees',
	255	'cds_2.title' => 'Forkful of bees' },
	256	{ join => [ 'cds', 'cds' ] });
	257
485f6e10	258	SKIP: {
	259	skip "SQLite < 3.2.6 doesn't understand COUNT(DISTINCT())", 1
	260	if $is_broken_sqlite;
	261	cmp_ok($rs->count, '==', 1, "single artist returned from multi-join");
	262	}
	263
489709af	264	is($rs->next->name, 'Caterwauler McCrae', "Correct artist returned");
489709af	265
d52170d4	266	$queries = 0;
887ce227	267	$schema->storage->debug(1);
	268
	269	my $tree_like =
	270	$schema->resultset('TreeLike')->find(4,
	271	{ join => { parent => { parent => 'parent' } },
	272	prefetch => { parent => { parent => 'parent' } } });
	273
	274	is($tree_like->name, 'quux', 'Bottom of tree ok');
	275	$tree_like = $tree_like->parent;
	276	is($tree_like->name, 'baz', 'First level up ok');
	277	$tree_like = $tree_like->parent;
	278	is($tree_like->name, 'bar', 'Second level up ok');
	279	$tree_like = $tree_like->parent;
	280	is($tree_like->name, 'foo', 'Third level up ok');
	281
	282	$schema->storage->debug(0);
	283
	284	cmp_ok($queries, '==', 1, 'Only one query run');
	285
0823196c	286	# has_many resulting in an additional select if no records available despite prefetch
	287	my $track = $schema->resultset("Artist")->create( {
	288	artistid => 4,
	289	name => 'Artist without CDs',
	290	} );
	291
	292	$queries = 0;
	293	$schema->storage->debug(1);
	294
	295	my $artist_without_cds = $schema->resultset("Artist")->find(4, {
	296	join => [qw/ cds /],
	297	prefetch => [qw/ cds /],
	298	});
	299	my @no_cds = $artist_without_cds->cds;
	300
	301	is($queries, 1, 'prefetch ran only 1 sql statement');
	302
	303	$schema->storage->debug(0);
	304