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1 | use strict; |
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2 | use warnings; |
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3 | |
4 | use Test::More; |
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5 | use Test::Exception; |
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6 | use lib qw(t/lib); |
7 | use DBICTest; |
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8 | |
9 | my $schema = DBICTest->init_schema(); |
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10 | |
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11 | my $rs; |
12 | $schema->is_executed_querycount( sub { |
13 | my $search = { 'artist.name' => 'Caterwauler McCrae' }; |
14 | my $attr = { prefetch => [ qw/artist liner_notes/ ], |
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15 | order_by => 'me.cdid' }; |
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16 | |
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17 | $rs = $schema->resultset("CD")->search($search, $attr); |
18 | my @cd = $rs->all; |
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19 | |
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20 | is($cd[0]->title, 'Spoonful of bees', 'First record returned ok'); |
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21 | |
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22 | ok(!defined $cd[0]->liner_notes, 'No prefetch for NULL LEFT join'); |
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23 | |
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24 | is($cd[1]->{_relationship_data}{liner_notes}->notes, 'Buy Whiskey!', 'Prefetch for present LEFT JOIN'); |
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25 | |
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26 | is(ref $cd[1]->liner_notes, 'DBICTest::LinerNotes', 'Prefetch returns correct class'); |
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27 | |
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28 | is($cd[2]->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'Prefetch on parent object ok'); |
29 | }, 1, 'prefetch ran only 1 select statement'); |
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30 | |
31 | # test for partial prefetch via columns attr |
32 | my $cd = $schema->resultset('CD')->find(1, |
33 | { |
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34 | columns => [qw/title artist artist.name/], |
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35 | join => { 'artist' => {} } |
36 | } |
37 | ); |
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38 | is( $cd->artist->name, 'Caterwauler McCrae', 'single related column prefetched'); |
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39 | |
40 | # start test for nested prefetch SELECT count |
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41 | my $tag; |
42 | $schema->is_executed_querycount( sub { |
43 | $rs = $schema->resultset('Tag')->search( |
44 | { 'me.tagid' => 1 }, |
45 | { |
46 | prefetch => { cd => 'artist' } |
47 | } |
48 | ); |
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49 | |
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50 | $tag = $rs->first; |
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51 | |
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52 | is( $tag->cd->title, 'Spoonful of bees', 'step 1 ok for nested prefetch' ); |
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53 | |
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54 | is( $tag->cd->artist->name, 'Caterwauler McCrae', 'step 2 ok for nested prefetch'); |
55 | }, 1, 'nested prefetch ran exactly 1 select statement'); |
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56 | |
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57 | |
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58 | $schema->is_executed_querycount( sub { |
59 | is($tag->search_related('cd')->search_related('artist')->first->name, |
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60 | 'Caterwauler McCrae', |
61 | 'chained belongs_to->belongs_to search_related ok'); |
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62 | }, 0, 'chained search_related after belongs_to->belongs_to prefetch ran no queries'); |
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63 | |
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64 | |
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65 | $schema->is_executed_querycount( sub { |
66 | $cd = $schema->resultset('CD')->find(1, { prefetch => 'artist' }); |
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67 | |
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68 | is($cd->{_inflated_column}{artist}->name, 'Caterwauler McCrae', 'artist prefetched correctly on find'); |
69 | }, 1, 'find with prefetch ran exactly 1 select statement (excluding column_info)'); |
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70 | |
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71 | $schema->is_executed_querycount( sub { |
72 | $cd = $schema->resultset('CD')->find(1, { prefetch => { cd_to_producer => 'producer' }, order_by => 'producer.producerid' }); |
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73 | |
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74 | is($cd->producers->first->name, 'Matt S Trout', 'many_to_many accessor ok'); |
75 | }, 1, 'many_to_many accessor with nested prefetch ran exactly 1 query'); |
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76 | |
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77 | $schema->is_executed_querycount( sub { |
78 | my $producers = $cd->search_related('cd_to_producer')->search_related('producer'); |
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79 | |
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80 | is($producers->first->name, 'Matt S Trout', 'chained many_to_many search_related ok'); |
81 | }, 0, 'chained search_related after many_to_many prefetch ran no queries'); |
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82 | |
83 | $rs = $schema->resultset('Tag')->search( |
84 | {}, |
85 | { |
86 | join => { cd => 'artist' }, |
87 | prefetch => { cd => 'artist' } |
88 | } |
89 | ); |
90 | |
91 | cmp_ok( $rs->count, '>=', 0, 'nested prefetch does not duplicate joins' ); |
92 | |
93 | my ($artist) = $schema->resultset("Artist")->search({ 'cds.year' => 2001 }, |
94 | { order_by => 'artistid DESC', join => 'cds' }); |
95 | |
96 | is($artist->name, 'Random Boy Band', "Join search by object ok"); |
97 | |
98 | my @cds = $schema->resultset("CD")->search({ 'liner_notes.notes' => 'Buy Merch!' }, |
99 | { join => 'liner_notes' }); |
100 | |
101 | cmp_ok(scalar @cds, '==', 1, "Single CD retrieved via might_have"); |
102 | |
103 | is($cds[0]->title, "Generic Manufactured Singles", "Correct CD retrieved"); |
104 | |
105 | my @artists = $schema->resultset("Artist")->search({ 'tags.tag' => 'Shiny' }, |
106 | { join => { 'cds' => 'tags' } }); |
107 | |
108 | cmp_ok( @artists, '==', 2, "two-join search ok" ); |
109 | |
110 | $rs = $schema->resultset("CD")->search( |
111 | {}, |
112 | { group_by => [qw/ title me.cdid /] } |
113 | ); |
114 | |
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115 | cmp_ok( $rs->count, '==', 5, "count() ok after group_by on main pk" ); |
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116 | |
117 | cmp_ok( scalar $rs->all, '==', 5, "all() returns same count as count() after group_by on main pk" ); |
118 | |
119 | $rs = $schema->resultset("CD")->search( |
120 | {}, |
121 | { join => [qw/ artist /], group_by => [qw/ artist.name /] } |
122 | ); |
123 | |
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124 | cmp_ok( $rs->count, '==', 3, "count() ok after group_by on related column" ); |
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125 | |
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126 | $rs = $schema->resultset("Artist")->search({}, { |
127 | join => [qw/ cds /], |
128 | group_by => [qw/ me.name /], |
129 | having => \[ 'MAX(cds.cdid) < ?', [ \'int' => 5 ] ], |
130 | }); |
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131 | |
132 | cmp_ok( $rs->all, '==', 2, "results ok after group_by on related column with a having" ); |
133 | |
134 | $rs = $rs->search( undef, { having =>{ 'count(*)'=> \'> 2' }}); |
135 | |
136 | cmp_ok( $rs->all, '==', 1, "count() ok after group_by on related column with a having" ); |
137 | |
138 | $rs = $schema->resultset("Artist")->search( |
139 | { 'cds.title' => 'Spoonful of bees', |
140 | 'cds_2.title' => 'Forkful of bees' }, |
141 | { join => [ 'cds', 'cds' ] }); |
142 | |
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143 | cmp_ok($rs->count, '==', 1, "single artist returned from multi-join"); |
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144 | |
145 | is($rs->next->name, 'Caterwauler McCrae', "Correct artist returned"); |
146 | |
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147 | $cd = $schema->resultset('Artist')->search({ artistid => 1 })->first->create_related('cds', |
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148 | { |
149 | title => 'Unproduced Single', |
150 | year => 2007 |
151 | }); |
152 | |
153 | my $left_join = $schema->resultset('CD')->search( |
154 | { 'me.cdid' => $cd->cdid }, |
155 | { prefetch => { cd_to_producer => 'producer' } } |
156 | ); |
157 | |
158 | cmp_ok($left_join, '==', 1, 'prefetch with no join record present'); |
159 | |
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160 | my $tree_like; |
161 | $schema->is_executed_querycount( sub { |
162 | $tree_like = |
163 | $schema->resultset('TreeLike')->find(5, |
164 | { join => { parent => { parent => 'parent' } }, |
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165 | prefetch => { parent => { parent => 'parent' } } }); |
166 | |
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167 | is($tree_like->name, 'quux', 'Bottom of tree ok'); |
168 | $tree_like = $tree_like->parent; |
169 | is($tree_like->name, 'baz', 'First level up ok'); |
170 | $tree_like = $tree_like->parent; |
171 | is($tree_like->name, 'bar', 'Second level up ok'); |
172 | $tree_like = $tree_like->parent; |
173 | is($tree_like->name, 'foo', 'Third level up ok'); |
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174 | |
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175 | }, 1, 'Only one query run'); |
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176 | |
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177 | $tree_like = $schema->resultset('TreeLike')->search({'me.id' => 2}); |
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178 | $tree_like = $tree_like->search_related('children')->search_related('children')->search_related('children')->first; |
179 | is($tree_like->name, 'quux', 'Tree search_related ok'); |
180 | |
181 | $tree_like = $schema->resultset('TreeLike')->search_related('children', |
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182 | { 'children.id' => 3, 'children_2.id' => 4 }, |
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183 | { prefetch => { children => 'children' } } |
184 | )->first; |
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185 | is( $tree_like->children->first->children->first->name, 'quux', |
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186 | 'Tree search_related with prefetch ok'); |
187 | |
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188 | $tree_like = $schema->resultset('TreeLike')->search( |
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189 | { 'children.id' => 3, 'children_2.id' => 6 }, |
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190 | { join => [qw/children children children/] } |
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191 | )->search_related('children', { 'children_4.id' => 7 }, { prefetch => 'children' } |
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192 | )->first->children->first; |
193 | is( $tree_like->name, 'fong', 'Tree with multiple has_many joins ok'); |
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194 | |
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195 | $rs = $schema->resultset('Artist'); |
196 | $rs->create({ artistid => 4, name => 'Unknown singer-songwriter' }); |
197 | $rs->create({ artistid => 5, name => 'Emo 4ever' }); |
198 | @artists = $rs->search(undef, { prefetch => 'cds', order_by => 'artistid' }); |
199 | is(scalar @artists, 5, 'has_many prefetch with adjacent empty rows ok'); |
200 | |
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201 | lives_ok { @artists = $rs->search(undef, { |
202 | join => ['cds'], |
203 | prefetch => [], |
204 | rows => 20, |
205 | }); |
206 | } 'join and empty prefetch ok'; |
207 | |
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208 | # ------------- |
209 | # |
210 | # Tests for multilevel has_many prefetch |
211 | |
212 | # artist resultsets - with and without prefetch |
213 | my $art_rs = $schema->resultset('Artist'); |
214 | my $art_rs_pr = $art_rs->search( |
215 | {}, |
216 | { |
217 | join => [ { cds => ['tracks'] } ], |
218 | prefetch => [ { cds => ['tracks'] } ], |
219 | cache => 1 # last test needs this |
220 | } |
221 | ); |
222 | |
223 | # This test does the same operation twice - once on a |
224 | # set of items fetched from the db with no prefetch of has_many rels |
225 | # The second prefetches 2 levels of has_many |
226 | # We check things are the same by comparing the name or title |
227 | # we build everything into a hash structure and compare the one |
228 | # from each rs to see what differs |
229 | |
230 | sub make_hash_struc { |
231 | my $rs = shift; |
232 | |
233 | my $struc = {}; |
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234 | # all of these ought to work, but do not for some reason |
235 | # a noop cloning search() pollution? |
236 | #foreach my $art ( $rs->search({}, { order_by => 'me.artistid' })->all ) { |
237 | #foreach my $art ( $rs->search({}, {})->all ) { |
238 | #foreach my $art ( $rs->search()->all ) { |
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239 | foreach my $art ( $rs->all ) { |
240 | foreach my $cd ( $art->cds ) { |
241 | foreach my $track ( $cd->tracks ) { |
242 | $struc->{ $art->name }{ $cd->title }{ $track->title }++; |
243 | } |
244 | } |
245 | } |
246 | return $struc; |
247 | } |
248 | |
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249 | |
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250 | my $prefetch_result; |
251 | $schema->is_executed_querycount( sub { |
252 | $prefetch_result = make_hash_struc($art_rs_pr); |
253 | }, 1, 'nested prefetch across has_many->has_many ran exactly 1 query'); |
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254 | |
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255 | my $nonpre_result = make_hash_struc($art_rs); |
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256 | is_deeply( $prefetch_result, $nonpre_result, |
257 | 'Compare 2 level prefetch result to non-prefetch result' ); |
258 | |
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259 | $schema->is_executed_querycount( sub { |
260 | is_deeply( |
261 | [ sort map { $_->title } $art_rs_pr->search_related('cds')->search_related('tracks')->all ], |
262 | [ 'Apiary', 'Beehind You', 'Boring Name', 'Boring Song', 'Fowlin', 'Howlin', |
263 | 'No More Ideas', 'Sad', 'Sticky Honey', 'Stripy', 'Stung with Success', |
264 | 'Suicidal', 'The Bees Knees', 'Under The Weather', 'Yowlin' ], |
265 | 'chained has_many->has_many search_related ok' |
266 | ); |
267 | }, 0, 'chained search_related after has_many->has_many prefetch ran no queries'); |
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268 | |
269 | done_testing; |