-
Notifications
You must be signed in to change notification settings - Fork 2.5k
/
SqlWalker.php
2330 lines (1869 loc) · 82.2 KB
/
SqlWalker.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\ORM\Query;
use Doctrine\DBAL\LockMode;
use Doctrine\DBAL\Types\Type;
use Doctrine\ORM\Mapping\ClassMetadata;
use Doctrine\ORM\Mapping\ClassMetadataInfo;
use Doctrine\ORM\OptimisticLockException;
use Doctrine\ORM\Query;
use Doctrine\ORM\Utility\PersisterHelper;
/**
* The SqlWalker is a TreeWalker that walks over a DQL AST and constructs
* the corresponding SQL.
*
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Roman Borschel <roman@code-factory.org>
* @author Benjamin Eberlei <kontakt@beberlei.de>
* @author Alexander <iam.asm89@gmail.com>
* @author Fabio B. Silva <fabio.bat.silva@gmail.com>
* @since 2.0
* @todo Rename: SQLWalker
*/
class SqlWalker implements TreeWalker
{
/**
* @var string
*/
const HINT_DISTINCT = 'doctrine.distinct';
/**
* @var ResultSetMapping
*/
private $rsm;
/**
* Counter for generating unique column aliases.
*
* @var integer
*/
private $aliasCounter = 0;
/**
* Counter for generating unique table aliases.
*
* @var integer
*/
private $tableAliasCounter = 0;
/**
* Counter for generating unique scalar result.
*
* @var integer
*/
private $scalarResultCounter = 1;
/**
* Counter for generating unique parameter indexes.
*
* @var integer
*/
private $sqlParamIndex = 0;
/**
* Counter for generating indexes.
*
* @var integer
*/
private $newObjectCounter = 0;
/**
* @var ParserResult
*/
private $parserResult;
/**
* @var \Doctrine\ORM\EntityManager
*/
private $em;
/**
* @var \Doctrine\DBAL\Connection
*/
private $conn;
/**
* @var \Doctrine\ORM\AbstractQuery
*/
private $query;
/**
* @var array
*/
private $tableAliasMap = [];
/**
* Map from result variable names to their SQL column alias names.
*
* @var array
*/
private $scalarResultAliasMap = [];
/**
* Map from Table-Alias + Column-Name to OrderBy-Direction.
*
* @var array
*/
private $orderedColumnsMap = [];
/**
* Map from DQL-Alias + Field-Name to SQL Column Alias.
*
* @var array
*/
private $scalarFields = [];
/**
* Map of all components/classes that appear in the DQL query.
*
* @var array
*/
private $queryComponents;
/**
* A list of classes that appear in non-scalar SelectExpressions.
*
* @var array
*/
private $selectedClasses = [];
/**
* The DQL alias of the root class of the currently traversed query.
*
* @var array
*/
private $rootAliases = [];
/**
* Flag that indicates whether to generate SQL table aliases in the SQL.
* These should only be generated for SELECT queries, not for UPDATE/DELETE.
*
* @var boolean
*/
private $useSqlTableAliases = true;
/**
* The database platform abstraction.
*
* @var \Doctrine\DBAL\Platforms\AbstractPlatform
*/
private $platform;
/**
* The quote strategy.
*
* @var \Doctrine\ORM\Mapping\QuoteStrategy
*/
private $quoteStrategy;
/**
* {@inheritDoc}
*/
public function __construct($query, $parserResult, array $queryComponents)
{
$this->query = $query;
$this->parserResult = $parserResult;
$this->queryComponents = $queryComponents;
$this->rsm = $parserResult->getResultSetMapping();
$this->em = $query->getEntityManager();
$this->conn = $this->em->getConnection();
$this->platform = $this->conn->getDatabasePlatform();
$this->quoteStrategy = $this->em->getConfiguration()->getQuoteStrategy();
}
/**
* Gets the Query instance used by the walker.
*
* @return Query.
*/
public function getQuery()
{
return $this->query;
}
/**
* Gets the Connection used by the walker.
*
* @return \Doctrine\DBAL\Connection
*/
public function getConnection()
{
return $this->conn;
}
/**
* Gets the EntityManager used by the walker.
*
* @return \Doctrine\ORM\EntityManager
*/
public function getEntityManager()
{
return $this->em;
}
/**
* Gets the information about a single query component.
*
* @param string $dqlAlias The DQL alias.
*
* @return array
*/
public function getQueryComponent($dqlAlias)
{
return $this->queryComponents[$dqlAlias];
}
/**
* {@inheritdoc}
*/
public function getQueryComponents()
{
return $this->queryComponents;
}
/**
* {@inheritdoc}
*/
public function setQueryComponent($dqlAlias, array $queryComponent)
{
$requiredKeys = ['metadata', 'parent', 'relation', 'map', 'nestingLevel', 'token'];
if (array_diff($requiredKeys, array_keys($queryComponent))) {
throw QueryException::invalidQueryComponent($dqlAlias);
}
$this->queryComponents[$dqlAlias] = $queryComponent;
}
/**
* {@inheritdoc}
*/
public function getExecutor($AST)
{
switch (true) {
case ($AST instanceof AST\DeleteStatement):
$primaryClass = $this->em->getClassMetadata($AST->deleteClause->abstractSchemaName);
return ($primaryClass->isInheritanceTypeJoined())
? new Exec\MultiTableDeleteExecutor($AST, $this)
: new Exec\SingleTableDeleteUpdateExecutor($AST, $this);
case ($AST instanceof AST\UpdateStatement):
$primaryClass = $this->em->getClassMetadata($AST->updateClause->abstractSchemaName);
return ($primaryClass->isInheritanceTypeJoined())
? new Exec\MultiTableUpdateExecutor($AST, $this)
: new Exec\SingleTableDeleteUpdateExecutor($AST, $this);
default:
return new Exec\SingleSelectExecutor($AST, $this);
}
}
/**
* Generates a unique, short SQL table alias.
*
* @param string $tableName Table name
* @param string $dqlAlias The DQL alias.
*
* @return string Generated table alias.
*/
public function getSQLTableAlias($tableName, $dqlAlias = '')
{
$tableName .= ($dqlAlias) ? '@[' . $dqlAlias . ']' : '';
if ( ! isset($this->tableAliasMap[$tableName])) {
$this->tableAliasMap[$tableName] = (preg_match('/[a-z]/i', $tableName[0]) ? strtolower($tableName[0]) : 't')
. $this->tableAliasCounter++ . '_';
}
return $this->tableAliasMap[$tableName];
}
/**
* Forces the SqlWalker to use a specific alias for a table name, rather than
* generating an alias on its own.
*
* @param string $tableName
* @param string $alias
* @param string $dqlAlias
*
* @return string
*/
public function setSQLTableAlias($tableName, $alias, $dqlAlias = '')
{
$tableName .= ($dqlAlias) ? '@[' . $dqlAlias . ']' : '';
$this->tableAliasMap[$tableName] = $alias;
return $alias;
}
/**
* Gets an SQL column alias for a column name.
*
* @param string $columnName
*
* @return string
*/
public function getSQLColumnAlias($columnName)
{
return $this->quoteStrategy->getColumnAlias($columnName, $this->aliasCounter++, $this->platform);
}
/**
* Generates the SQL JOINs that are necessary for Class Table Inheritance
* for the given class.
*
* @param ClassMetadata $class The class for which to generate the joins.
* @param string $dqlAlias The DQL alias of the class.
*
* @return string The SQL.
*/
private function _generateClassTableInheritanceJoins($class, $dqlAlias)
{
$sql = '';
$baseTableAlias = $this->getSQLTableAlias($class->getTableName(), $dqlAlias);
// INNER JOIN parent class tables
foreach ($class->parentClasses as $parentClassName) {
$parentClass = $this->em->getClassMetadata($parentClassName);
$tableAlias = $this->getSQLTableAlias($parentClass->getTableName(), $dqlAlias);
// If this is a joined association we must use left joins to preserve the correct result.
$sql .= isset($this->queryComponents[$dqlAlias]['relation']) ? ' LEFT ' : ' INNER ';
$sql .= 'JOIN ' . $this->quoteStrategy->getTableName($parentClass, $this->platform) . ' ' . $tableAlias . ' ON ';
$sqlParts = [];
foreach ($this->quoteStrategy->getIdentifierColumnNames($class, $this->platform) as $columnName) {
$sqlParts[] = $baseTableAlias . '.' . $columnName . ' = ' . $tableAlias . '.' . $columnName;
}
// Add filters on the root class
if ($filterSql = $this->generateFilterConditionSQL($parentClass, $tableAlias)) {
$sqlParts[] = $filterSql;
}
$sql .= implode(' AND ', $sqlParts);
}
// Ignore subclassing inclusion if partial objects is disallowed
if ($this->query->getHint(Query::HINT_FORCE_PARTIAL_LOAD)) {
return $sql;
}
// LEFT JOIN child class tables
foreach ($class->subClasses as $subClassName) {
$subClass = $this->em->getClassMetadata($subClassName);
$tableAlias = $this->getSQLTableAlias($subClass->getTableName(), $dqlAlias);
$sql .= ' LEFT JOIN ' . $this->quoteStrategy->getTableName($subClass, $this->platform) . ' ' . $tableAlias . ' ON ';
$sqlParts = [];
foreach ($this->quoteStrategy->getIdentifierColumnNames($subClass, $this->platform) as $columnName) {
$sqlParts[] = $baseTableAlias . '.' . $columnName . ' = ' . $tableAlias . '.' . $columnName;
}
$sql .= implode(' AND ', $sqlParts);
}
return $sql;
}
/**
* @return string
*/
private function _generateOrderedCollectionOrderByItems()
{
$orderedColumns = [];
foreach ($this->selectedClasses as $selectedClass) {
$dqlAlias = $selectedClass['dqlAlias'];
$qComp = $this->queryComponents[$dqlAlias];
if ( ! isset($qComp['relation']['orderBy'])) {
continue;
}
$persister = $this->em->getUnitOfWork()->getEntityPersister($qComp['metadata']->name);
foreach ($qComp['relation']['orderBy'] as $fieldName => $orientation) {
$columnName = $this->quoteStrategy->getColumnName($fieldName, $qComp['metadata'], $this->platform);
$tableName = ($qComp['metadata']->isInheritanceTypeJoined())
? $persister->getOwningTable($fieldName)
: $qComp['metadata']->getTableName();
$orderedColumn = $this->getSQLTableAlias($tableName, $dqlAlias) . '.' . $columnName;
// OrderByClause should replace an ordered relation. see - DDC-2475
if (isset($this->orderedColumnsMap[$orderedColumn])) {
continue;
}
$this->orderedColumnsMap[$orderedColumn] = $orientation;
$orderedColumns[] = $orderedColumn . ' ' . $orientation;
}
}
return implode(', ', $orderedColumns);
}
/**
* Generates a discriminator column SQL condition for the class with the given DQL alias.
*
* @param array $dqlAliases List of root DQL aliases to inspect for discriminator restrictions.
*
* @return string
*/
private function _generateDiscriminatorColumnConditionSQL(array $dqlAliases)
{
$sqlParts = [];
foreach ($dqlAliases as $dqlAlias) {
$class = $this->queryComponents[$dqlAlias]['metadata'];
if ( ! $class->isInheritanceTypeSingleTable()) continue;
$conn = $this->em->getConnection();
$values = [];
if ($class->discriminatorValue !== null) { // discriminators can be 0
$values[] = $conn->quote($class->discriminatorValue);
}
foreach ($class->subClasses as $subclassName) {
$values[] = $conn->quote($this->em->getClassMetadata($subclassName)->discriminatorValue);
}
$sqlTableAlias = ($this->useSqlTableAliases)
? $this->getSQLTableAlias($class->getTableName(), $dqlAlias) . '.'
: '';
$sqlParts[] = $sqlTableAlias . $class->discriminatorColumn['name'] . ' IN (' . implode(', ', $values) . ')';
}
$sql = implode(' AND ', $sqlParts);
return (count($sqlParts) > 1) ? '(' . $sql . ')' : $sql;
}
/**
* Generates the filter SQL for a given entity and table alias.
*
* @param ClassMetadata $targetEntity Metadata of the target entity.
* @param string $targetTableAlias The table alias of the joined/selected table.
*
* @return string The SQL query part to add to a query.
*/
private function generateFilterConditionSQL(ClassMetadata $targetEntity, $targetTableAlias)
{
if (!$this->em->hasFilters()) {
return '';
}
switch($targetEntity->inheritanceType) {
case ClassMetadata::INHERITANCE_TYPE_NONE:
break;
case ClassMetadata::INHERITANCE_TYPE_JOINED:
// The classes in the inheritance will be added to the query one by one,
// but only the root node is getting filtered
if ($targetEntity->name !== $targetEntity->rootEntityName) {
return '';
}
break;
case ClassMetadata::INHERITANCE_TYPE_SINGLE_TABLE:
// With STI the table will only be queried once, make sure that the filters
// are added to the root entity
$targetEntity = $this->em->getClassMetadata($targetEntity->rootEntityName);
break;
default:
//@todo: throw exception?
return '';
}
$filterClauses = [];
foreach ($this->em->getFilters()->getEnabledFilters() as $filter) {
if ('' !== $filterExpr = $filter->addFilterConstraint($targetEntity, $targetTableAlias)) {
$filterClauses[] = '(' . $filterExpr . ')';
}
}
return implode(' AND ', $filterClauses);
}
/**
* {@inheritdoc}
*/
public function walkSelectStatement(AST\SelectStatement $AST)
{
$limit = $this->query->getMaxResults();
$offset = $this->query->getFirstResult();
$lockMode = $this->query->getHint(Query::HINT_LOCK_MODE);
$sql = $this->walkSelectClause($AST->selectClause)
. $this->walkFromClause($AST->fromClause)
. $this->walkWhereClause($AST->whereClause);
if ($AST->groupByClause) {
$sql .= $this->walkGroupByClause($AST->groupByClause);
}
if ($AST->havingClause) {
$sql .= $this->walkHavingClause($AST->havingClause);
}
if ($AST->orderByClause) {
$sql .= $this->walkOrderByClause($AST->orderByClause);
}
if ( ! $AST->orderByClause && ($orderBySql = $this->_generateOrderedCollectionOrderByItems())) {
$sql .= ' ORDER BY ' . $orderBySql;
}
if ($limit !== null || $offset !== null) {
$sql = $this->platform->modifyLimitQuery($sql, $limit, $offset);
}
if ($lockMode === null || $lockMode === false || $lockMode === LockMode::NONE) {
return $sql;
}
if ($lockMode === LockMode::PESSIMISTIC_READ) {
return $sql . ' ' . $this->platform->getReadLockSQL();
}
if ($lockMode === LockMode::PESSIMISTIC_WRITE) {
return $sql . ' ' . $this->platform->getWriteLockSQL();
}
if ($lockMode !== LockMode::OPTIMISTIC) {
throw QueryException::invalidLockMode();
}
foreach ($this->selectedClasses as $selectedClass) {
if ( ! $selectedClass['class']->isVersioned) {
throw OptimisticLockException::lockFailed($selectedClass['class']->name);
}
}
return $sql;
}
/**
* {@inheritdoc}
*/
public function walkUpdateStatement(AST\UpdateStatement $AST)
{
$this->useSqlTableAliases = false;
$this->rsm->isSelect = false;
return $this->walkUpdateClause($AST->updateClause)
. $this->walkWhereClause($AST->whereClause);
}
/**
* {@inheritdoc}
*/
public function walkDeleteStatement(AST\DeleteStatement $AST)
{
$this->useSqlTableAliases = false;
$this->rsm->isSelect = false;
return $this->walkDeleteClause($AST->deleteClause)
. $this->walkWhereClause($AST->whereClause);
}
/**
* Walks down an IdentificationVariable AST node, thereby generating the appropriate SQL.
* This one differs of ->walkIdentificationVariable() because it generates the entity identifiers.
*
* @param string $identVariable
*
* @return string
*/
public function walkEntityIdentificationVariable($identVariable)
{
$class = $this->queryComponents[$identVariable]['metadata'];
$tableAlias = $this->getSQLTableAlias($class->getTableName(), $identVariable);
$sqlParts = [];
foreach ($this->quoteStrategy->getIdentifierColumnNames($class, $this->platform) as $columnName) {
$sqlParts[] = $tableAlias . '.' . $columnName;
}
return implode(', ', $sqlParts);
}
/**
* Walks down an IdentificationVariable (no AST node associated), thereby generating the SQL.
*
* @param string $identificationVariable
* @param string $fieldName
*
* @return string The SQL.
*/
public function walkIdentificationVariable($identificationVariable, $fieldName = null)
{
$class = $this->queryComponents[$identificationVariable]['metadata'];
if (
$fieldName !== null && $class->isInheritanceTypeJoined() &&
isset($class->fieldMappings[$fieldName]['inherited'])
) {
$class = $this->em->getClassMetadata($class->fieldMappings[$fieldName]['inherited']);
}
return $this->getSQLTableAlias($class->getTableName(), $identificationVariable);
}
/**
* {@inheritdoc}
*/
public function walkPathExpression($pathExpr)
{
$sql = '';
switch ($pathExpr->type) {
case AST\PathExpression::TYPE_STATE_FIELD:
$fieldName = $pathExpr->field;
$dqlAlias = $pathExpr->identificationVariable;
$class = $this->queryComponents[$dqlAlias]['metadata'];
if ($this->useSqlTableAliases) {
$sql .= $this->walkIdentificationVariable($dqlAlias, $fieldName) . '.';
}
$sql .= $this->quoteStrategy->getColumnName($fieldName, $class, $this->platform);
break;
case AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION:
// 1- the owning side:
// Just use the foreign key, i.e. u.group_id
$fieldName = $pathExpr->field;
$dqlAlias = $pathExpr->identificationVariable;
$class = $this->queryComponents[$dqlAlias]['metadata'];
if (isset($class->associationMappings[$fieldName]['inherited'])) {
$class = $this->em->getClassMetadata($class->associationMappings[$fieldName]['inherited']);
}
$assoc = $class->associationMappings[$fieldName];
if ( ! $assoc['isOwningSide']) {
throw QueryException::associationPathInverseSideNotSupported();
}
// COMPOSITE KEYS NOT (YET?) SUPPORTED
if (count($assoc['sourceToTargetKeyColumns']) > 1) {
throw QueryException::associationPathCompositeKeyNotSupported();
}
if ($this->useSqlTableAliases) {
$sql .= $this->getSQLTableAlias($class->getTableName(), $dqlAlias) . '.';
}
$sql .= reset($assoc['targetToSourceKeyColumns']);
break;
default:
throw QueryException::invalidPathExpression($pathExpr);
}
return $sql;
}
/**
* {@inheritdoc}
*/
public function walkSelectClause($selectClause)
{
$sql = 'SELECT ' . (($selectClause->isDistinct) ? 'DISTINCT ' : '');
$sqlSelectExpressions = array_filter(array_map([$this, 'walkSelectExpression'], $selectClause->selectExpressions));
if ($this->query->getHint(Query::HINT_INTERNAL_ITERATION) == true && $selectClause->isDistinct) {
$this->query->setHint(self::HINT_DISTINCT, true);
}
$addMetaColumns = ! $this->query->getHint(Query::HINT_FORCE_PARTIAL_LOAD) &&
$this->query->getHydrationMode() == Query::HYDRATE_OBJECT
||
$this->query->getHydrationMode() != Query::HYDRATE_OBJECT &&
$this->query->getHint(Query::HINT_INCLUDE_META_COLUMNS);
foreach ($this->selectedClasses as $selectedClass) {
$class = $selectedClass['class'];
$dqlAlias = $selectedClass['dqlAlias'];
$resultAlias = $selectedClass['resultAlias'];
// Register as entity or joined entity result
if ($this->queryComponents[$dqlAlias]['relation'] === null) {
$this->rsm->addEntityResult($class->name, $dqlAlias, $resultAlias);
} else {
$this->rsm->addJoinedEntityResult(
$class->name,
$dqlAlias,
$this->queryComponents[$dqlAlias]['parent'],
$this->queryComponents[$dqlAlias]['relation']['fieldName']
);
}
if ($class->isInheritanceTypeSingleTable() || $class->isInheritanceTypeJoined()) {
// Add discriminator columns to SQL
$rootClass = $this->em->getClassMetadata($class->rootEntityName);
$tblAlias = $this->getSQLTableAlias($rootClass->getTableName(), $dqlAlias);
$discrColumn = $rootClass->discriminatorColumn;
$columnAlias = $this->getSQLColumnAlias($discrColumn['name']);
$sqlSelectExpressions[] = $tblAlias . '.' . $discrColumn['name'] . ' AS ' . $columnAlias;
$this->rsm->setDiscriminatorColumn($dqlAlias, $columnAlias);
$this->rsm->addMetaResult($dqlAlias, $columnAlias, $discrColumn['fieldName'], false, $discrColumn['type']);
}
// Add foreign key columns to SQL, if necessary
if ( ! $addMetaColumns && ! $class->containsForeignIdentifier) {
continue;
}
// Add foreign key columns of class and also parent classes
foreach ($class->associationMappings as $assoc) {
if ( ! ($assoc['isOwningSide'] && $assoc['type'] & ClassMetadata::TO_ONE)) {
continue;
} else if ( !$addMetaColumns && !isset($assoc['id'])) {
continue;
}
$targetClass = $this->em->getClassMetadata($assoc['targetEntity']);
$isIdentifier = (isset($assoc['id']) && $assoc['id'] === true);
$owningClass = (isset($assoc['inherited'])) ? $this->em->getClassMetadata($assoc['inherited']) : $class;
$sqlTableAlias = $this->getSQLTableAlias($owningClass->getTableName(), $dqlAlias);
foreach ($assoc['joinColumns'] as $joinColumn) {
$columnName = $joinColumn['name'];
$columnAlias = $this->getSQLColumnAlias($columnName);
$columnType = PersisterHelper::getTypeOfColumn($joinColumn['referencedColumnName'], $targetClass, $this->em);
$sqlSelectExpressions[] = $sqlTableAlias . '.' . $columnName . ' AS ' . $columnAlias;
$this->rsm->addMetaResult($dqlAlias, $columnAlias, $columnName, $isIdentifier, $columnType);
}
}
// Add foreign key columns to SQL, if necessary
if ( ! $addMetaColumns) {
continue;
}
// Add foreign key columns of subclasses
foreach ($class->subClasses as $subClassName) {
$subClass = $this->em->getClassMetadata($subClassName);
$sqlTableAlias = $this->getSQLTableAlias($subClass->getTableName(), $dqlAlias);
foreach ($subClass->associationMappings as $assoc) {
// Skip if association is inherited
if (isset($assoc['inherited'])) continue;
if ($assoc['isOwningSide'] && $assoc['type'] & ClassMetadata::TO_ONE) {
$targetClass = $this->em->getClassMetadata($assoc['targetEntity']);
foreach ($assoc['joinColumns'] as $joinColumn) {
$columnName = $joinColumn['name'];
$columnAlias = $this->getSQLColumnAlias($columnName);
$columnType = PersisterHelper::getTypeOfColumn($joinColumn['referencedColumnName'], $targetClass, $this->em);
$sqlSelectExpressions[] = $sqlTableAlias . '.' . $columnName . ' AS ' . $columnAlias;
$this->rsm->addMetaResult($dqlAlias, $columnAlias, $columnName, $subClass->isIdentifier($columnName), $columnType);
}
}
}
}
}
$sql .= implode(', ', $sqlSelectExpressions);
return $sql;
}
/**
* {@inheritdoc}
*/
public function walkFromClause($fromClause)
{
$identificationVarDecls = $fromClause->identificationVariableDeclarations;
$sqlParts = [];
foreach ($identificationVarDecls as $identificationVariableDecl) {
$sqlParts[] = $this->walkIdentificationVariableDeclaration($identificationVariableDecl);
}
return ' FROM ' . implode(', ', $sqlParts);
}
/**
* Walks down a IdentificationVariableDeclaration AST node, thereby generating the appropriate SQL.
*
* @param AST\IdentificationVariableDeclaration $identificationVariableDecl
*
* @return string
*/
public function walkIdentificationVariableDeclaration($identificationVariableDecl)
{
$sql = $this->walkRangeVariableDeclaration($identificationVariableDecl->rangeVariableDeclaration);
if ($identificationVariableDecl->indexBy) {
$this->walkIndexBy($identificationVariableDecl->indexBy);
}
foreach ($identificationVariableDecl->joins as $join) {
$sql .= $this->walkJoin($join);
}
return $sql;
}
/**
* Walks down a IndexBy AST node.
*
* @param AST\IndexBy $indexBy
*
* @return void
*/
public function walkIndexBy($indexBy)
{
$pathExpression = $indexBy->simpleStateFieldPathExpression;
$alias = $pathExpression->identificationVariable;
$field = $pathExpression->field;
if (isset($this->scalarFields[$alias][$field])) {
$this->rsm->addIndexByScalar($this->scalarFields[$alias][$field]);
return;
}
$this->rsm->addIndexBy($alias, $field);
}
/**
* Walks down a RangeVariableDeclaration AST node, thereby generating the appropriate SQL.
*
* @param AST\RangeVariableDeclaration $rangeVariableDeclaration
*
* @return string
*/
public function walkRangeVariableDeclaration($rangeVariableDeclaration)
{
$class = $this->em->getClassMetadata($rangeVariableDeclaration->abstractSchemaName);
$dqlAlias = $rangeVariableDeclaration->aliasIdentificationVariable;
if ($rangeVariableDeclaration->isRoot) {
$this->rootAliases[] = $dqlAlias;
}
$sql = $this->platform->appendLockHint(
$this->quoteStrategy->getTableName($class, $this->platform) . ' ' .
$this->getSQLTableAlias($class->getTableName(), $dqlAlias),
$this->query->getHint(Query::HINT_LOCK_MODE)
);
if ($class->isInheritanceTypeJoined()) {
$sql .= $this->_generateClassTableInheritanceJoins($class, $dqlAlias);
}
return $sql;
}
/**
* Walks down a JoinAssociationDeclaration AST node, thereby generating the appropriate SQL.
*
* @param AST\JoinAssociationDeclaration $joinAssociationDeclaration
* @param int $joinType
* @param AST\ConditionalExpression $condExpr
*
* @return string
*
* @throws QueryException
*/
public function walkJoinAssociationDeclaration($joinAssociationDeclaration, $joinType = AST\Join::JOIN_TYPE_INNER, $condExpr = null)
{
$sql = '';
$associationPathExpression = $joinAssociationDeclaration->joinAssociationPathExpression;
$joinedDqlAlias = $joinAssociationDeclaration->aliasIdentificationVariable;
$indexBy = $joinAssociationDeclaration->indexBy;
$relation = $this->queryComponents[$joinedDqlAlias]['relation'];
$targetClass = $this->em->getClassMetadata($relation['targetEntity']);
$sourceClass = $this->em->getClassMetadata($relation['sourceEntity']);
$targetTableName = $this->quoteStrategy->getTableName($targetClass, $this->platform);
$targetTableAlias = $this->getSQLTableAlias($targetClass->getTableName(), $joinedDqlAlias);
$sourceTableAlias = $this->getSQLTableAlias($sourceClass->getTableName(), $associationPathExpression->identificationVariable);
// Ensure we got the owning side, since it has all mapping info
$assoc = ( ! $relation['isOwningSide']) ? $targetClass->associationMappings[$relation['mappedBy']] : $relation;
if ($this->query->getHint(Query::HINT_INTERNAL_ITERATION) == true && (!$this->query->getHint(self::HINT_DISTINCT) || isset($this->selectedClasses[$joinedDqlAlias]))) {
if ($relation['type'] == ClassMetadata::ONE_TO_MANY || $relation['type'] == ClassMetadata::MANY_TO_MANY) {
throw QueryException::iterateWithFetchJoinNotAllowed($assoc);
}
}
$targetTableJoin = null;
// This condition is not checking ClassMetadata::MANY_TO_ONE, because by definition it cannot
// be the owning side and previously we ensured that $assoc is always the owning side of the associations.
// The owning side is necessary at this point because only it contains the JoinColumn information.
switch (true) {
case ($assoc['type'] & ClassMetadata::TO_ONE):
$conditions = [];
foreach ($assoc['joinColumns'] as $joinColumn) {
$quotedSourceColumn = $this->quoteStrategy->getJoinColumnName($joinColumn, $targetClass, $this->platform);
$quotedTargetColumn = $this->quoteStrategy->getReferencedJoinColumnName($joinColumn, $targetClass, $this->platform);
if ($relation['isOwningSide']) {
$conditions[] = $sourceTableAlias . '.' . $quotedSourceColumn . ' = ' . $targetTableAlias . '.' . $quotedTargetColumn;
continue;
}
$conditions[] = $sourceTableAlias . '.' . $quotedTargetColumn . ' = ' . $targetTableAlias . '.' . $quotedSourceColumn;
}
// Apply remaining inheritance restrictions
$discrSql = $this->_generateDiscriminatorColumnConditionSQL([$joinedDqlAlias]);
if ($discrSql) {
$conditions[] = $discrSql;
}
// Apply the filters
$filterExpr = $this->generateFilterConditionSQL($targetClass, $targetTableAlias);
if ($filterExpr) {
$conditions[] = $filterExpr;
}
$targetTableJoin = [
'table' => $targetTableName . ' ' . $targetTableAlias,
'condition' => implode(' AND ', $conditions),
];
break;
case ($assoc['type'] == ClassMetadata::MANY_TO_MANY):
// Join relation table
$joinTable = $assoc['joinTable'];
$joinTableAlias = $this->getSQLTableAlias($joinTable['name'], $joinedDqlAlias);
$joinTableName = $this->quoteStrategy->getJoinTableName($assoc, $sourceClass, $this->platform);
$conditions = [];
$relationColumns = ($relation['isOwningSide'])
? $assoc['joinTable']['joinColumns']
: $assoc['joinTable']['inverseJoinColumns'];
foreach ($relationColumns as $joinColumn) {
$quotedSourceColumn = $this->quoteStrategy->getJoinColumnName($joinColumn, $targetClass, $this->platform);
$quotedTargetColumn = $this->quoteStrategy->getReferencedJoinColumnName($joinColumn, $targetClass, $this->platform);
$conditions[] = $sourceTableAlias . '.' . $quotedTargetColumn . ' = ' . $joinTableAlias . '.' . $quotedSourceColumn;
}
$sql .= $joinTableName . ' ' . $joinTableAlias . ' ON ' . implode(' AND ', $conditions);
// Join target table
$sql .= ($joinType == AST\Join::JOIN_TYPE_LEFT || $joinType == AST\Join::JOIN_TYPE_LEFTOUTER) ? ' LEFT JOIN ' : ' INNER JOIN ';
$conditions = [];
$relationColumns = ($relation['isOwningSide'])
? $assoc['joinTable']['inverseJoinColumns']