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1 | # Test to ensure we get a consistent result set wether or not we use the |
2 | # prefetch option in combination rows (LIMIT). |
3 | use strict; |
4 | use warnings; |
5 | |
6 | use Test::More; |
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7 | use Test::Exception; |
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8 | use lib qw(t/lib); |
9 | use DBICTest; |
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10 | use DBIC::SqlMakerTest; |
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11 | |
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12 | my $schema = DBICTest->init_schema(); |
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13 | |
14 | |
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15 | my $no_prefetch = $schema->resultset('Artist')->search( |
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16 | [ # search deliberately contrived |
17 | { 'artwork.cd_id' => undef }, |
18 | { 'tracks.title' => { '!=' => 'blah-blah-1234568' }} |
19 | ], |
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20 | { rows => 3, join => { cds => [qw/artwork tracks/] }, |
21 | } |
22 | ); |
23 | |
24 | my $use_prefetch = $no_prefetch->search( |
25 | {}, |
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26 | { |
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27 | select => ['me.artistid', 'me.name'], |
28 | as => ['artistid', 'name'], |
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29 | prefetch => 'cds', |
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30 | order_by => { -desc => 'name' }, |
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31 | } |
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32 | ); |
33 | |
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34 | is($no_prefetch->count, $use_prefetch->count, '$no_prefetch->count == $use_prefetch->count'); |
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35 | is( |
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36 | scalar ($no_prefetch->all), |
37 | scalar ($use_prefetch->all), |
38 | "Amount of returned rows is right" |
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39 | ); |
40 | |
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41 | my $artist_many_cds = $schema->resultset('Artist')->search ( {}, { |
42 | join => 'cds', |
43 | group_by => 'me.artistid', |
44 | having => \ 'count(cds.cdid) > 1', |
45 | })->first; |
46 | |
47 | |
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48 | $no_prefetch = $schema->resultset('Artist')->search( |
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49 | { artistid => $artist_many_cds->id }, |
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50 | { rows => 1 } |
51 | ); |
52 | |
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53 | $use_prefetch = $no_prefetch->search ({}, { prefetch => 'cds' }); |
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54 | |
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55 | my $normal_artist = $no_prefetch->single; |
56 | my $prefetch_artist = $use_prefetch->find({ name => $artist_many_cds->name }); |
57 | my $prefetch2_artist = $use_prefetch->first; |
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58 | |
59 | is( |
60 | $prefetch_artist->cds->count, |
61 | $normal_artist->cds->count, |
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62 | "Count of child rel with prefetch + rows => 1 is right (find)" |
63 | ); |
64 | is( |
65 | $prefetch2_artist->cds->count, |
66 | $normal_artist->cds->count, |
67 | "Count of child rel with prefetch + rows => 1 is right (first)" |
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68 | ); |
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69 | |
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70 | is ( |
71 | scalar ($prefetch_artist->cds->all), |
72 | scalar ($normal_artist->cds->all), |
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73 | "Amount of child rel rows with prefetch + rows => 1 is right (find)" |
74 | ); |
75 | is ( |
76 | scalar ($prefetch2_artist->cds->all), |
77 | scalar ($normal_artist->cds->all), |
78 | "Amount of child rel rows with prefetch + rows => 1 is right (first)" |
79 | ); |
80 | |
81 | throws_ok ( |
82 | sub { $use_prefetch->single }, |
83 | qr/resultsets prefetching has_many/, |
84 | 'single() with multiprefetch is illegal', |
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85 | ); |
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86 | |
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87 | my $artist = $use_prefetch->search({'cds.title' => $artist_many_cds->cds->first->title })->next; |
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88 | is($artist->cds->count, 1, "count on search limiting prefetched has_many"); |
89 | |
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90 | # try with double limit |
91 | my $artist2 = $use_prefetch->search({'cds.title' => { '!=' => $artist_many_cds->cds->first->title } })->slice (0,0)->next; |
92 | is($artist2->cds->count, 2, "count on search limiting prefetched has_many"); |
93 | |
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94 | # make sure 1:1 joins do not force a subquery (no point to exercise the optimizer, if at all available) |
95 | # get cd's that have any tracks and their artists |
96 | my $single_prefetch_rs = $schema->resultset ('CD')->search ( |
97 | { 'me.year' => 2010, 'artist.name' => 'foo' }, |
98 | { prefetch => ['tracks', 'artist'], rows => 15 }, |
99 | ); |
100 | is_same_sql_bind ( |
101 | $single_prefetch_rs->as_query, |
102 | '( |
103 | SELECT |
104 | me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track, |
105 | tracks.trackid, tracks.cd, tracks.position, tracks.title, tracks.last_updated_on, tracks.last_updated_at, tracks.small_dt, |
106 | artist.artistid, artist.name, artist.rank, artist.charfield |
107 | FROM ( |
108 | SELECT |
109 | me.cdid, me.artist, me.title, me.year, me.genreid, me.single_track |
110 | FROM cd me |
111 | JOIN artist artist ON artist.artistid = me.artist |
112 | WHERE ( ( artist.name = ? AND me.year = ? ) ) |
113 | LIMIT 15 |
114 | ) me |
115 | LEFT JOIN track tracks |
116 | ON tracks.cd = me.cdid |
117 | JOIN artist artist |
118 | ON artist.artistid = me.artist |
119 | WHERE ( ( artist.name = ? AND me.year = ? ) ) |
120 | ORDER BY tracks.cd |
121 | )', |
122 | [ |
123 | [ 'artist.name' => 'foo' ], |
124 | [ 'me.year' => 2010 ], |
125 | [ 'artist.name' => 'foo' ], |
126 | [ 'me.year' => 2010 ], |
127 | ], |
128 | 'No grouping of non-multiplying resultsets', |
129 | ); |
130 | |
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131 | done_testing; |