1
|
|
|
<?php |
2
|
|
|
|
3
|
|
|
/** |
4
|
|
|
* @author Jared King <[email protected]> |
5
|
|
|
* |
6
|
|
|
* @see http://jaredtking.com |
7
|
|
|
* |
8
|
|
|
* @copyright 2015 Jared King |
9
|
|
|
* @license MIT |
10
|
|
|
*/ |
11
|
|
|
|
12
|
|
|
namespace Pulsar; |
13
|
|
|
|
14
|
|
|
use Pulsar\Relation\Relationship; |
15
|
|
|
|
16
|
|
|
/** |
17
|
|
|
* Represents a query against a model type. |
18
|
|
|
*/ |
19
|
|
|
class Query |
20
|
|
|
{ |
21
|
|
|
const DEFAULT_LIMIT = 100; |
22
|
|
|
const MAX_LIMIT = 1000; |
23
|
|
|
|
24
|
|
|
/** |
25
|
|
|
* @var Model|string |
26
|
|
|
*/ |
27
|
|
|
private $model; |
28
|
|
|
|
29
|
|
|
/** |
30
|
|
|
* @var array |
31
|
|
|
*/ |
32
|
|
|
private $joins; |
33
|
|
|
|
34
|
|
|
/** |
35
|
|
|
* @var array |
36
|
|
|
*/ |
37
|
|
|
private $eagerLoaded; |
38
|
|
|
|
39
|
|
|
/** |
40
|
|
|
* @var array |
41
|
|
|
*/ |
42
|
|
|
private $where; |
43
|
|
|
|
44
|
|
|
/** |
45
|
|
|
* @var int |
46
|
|
|
*/ |
47
|
|
|
private $limit; |
48
|
|
|
|
49
|
|
|
/** |
50
|
|
|
* @var int |
51
|
|
|
*/ |
52
|
|
|
private $start; |
53
|
|
|
|
54
|
|
|
/** |
55
|
|
|
* @var array |
56
|
|
|
*/ |
57
|
|
|
private $sort; |
58
|
|
|
|
59
|
|
|
/** |
60
|
|
|
* @param Model|string $model |
61
|
|
|
*/ |
62
|
|
|
public function __construct($model = '') |
63
|
|
|
{ |
64
|
|
|
$this->model = $model; |
65
|
|
|
$this->joins = []; |
66
|
|
|
$this->eagerLoaded = []; |
67
|
|
|
$this->where = []; |
68
|
|
|
$this->start = 0; |
69
|
|
|
$this->limit = self::DEFAULT_LIMIT; |
70
|
|
|
$this->sort = []; |
71
|
|
|
} |
72
|
|
|
|
73
|
|
|
/** |
74
|
|
|
* Gets the model class associated with this query. |
75
|
|
|
* |
76
|
|
|
* @return Model|string |
77
|
|
|
*/ |
78
|
|
|
public function getModel() |
79
|
|
|
{ |
80
|
|
|
return $this->model; |
81
|
|
|
} |
82
|
|
|
|
83
|
|
|
/** |
84
|
|
|
* Sets the limit for this query. |
85
|
|
|
* |
86
|
|
|
* @return $this |
87
|
|
|
*/ |
88
|
|
|
public function limit(int $limit) |
89
|
|
|
{ |
90
|
|
|
$this->limit = min($limit, self::MAX_LIMIT); |
91
|
|
|
|
92
|
|
|
return $this; |
93
|
|
|
} |
94
|
|
|
|
95
|
|
|
/** |
96
|
|
|
* Gets the limit for this query. |
97
|
|
|
*/ |
98
|
|
|
public function getLimit(): int |
99
|
|
|
{ |
100
|
|
|
return $this->limit; |
101
|
|
|
} |
102
|
|
|
|
103
|
|
|
/** |
104
|
|
|
* Sets the start offset. |
105
|
|
|
* |
106
|
|
|
* @return $this |
107
|
|
|
*/ |
108
|
|
|
public function start(int $start) |
109
|
|
|
{ |
110
|
|
|
$this->start = max($start, 0); |
111
|
|
|
|
112
|
|
|
return $this; |
113
|
|
|
} |
114
|
|
|
|
115
|
|
|
/** |
116
|
|
|
* Gets the start offset. |
117
|
|
|
*/ |
118
|
|
|
public function getStart(): int |
119
|
|
|
{ |
120
|
|
|
return $this->start; |
121
|
|
|
} |
122
|
|
|
|
123
|
|
|
/** |
124
|
|
|
* Sets the sort pattern for the query. |
125
|
|
|
* |
126
|
|
|
* @param array|string $sort |
127
|
|
|
* |
128
|
|
|
* @return $this |
129
|
|
|
*/ |
130
|
|
|
public function sort($sort) |
131
|
|
|
{ |
132
|
|
|
$columns = explode(',', $sort); |
133
|
|
|
|
134
|
|
|
$sortParams = []; |
135
|
|
|
foreach ($columns as $column) { |
136
|
|
|
$c = explode(' ', trim($column)); |
137
|
|
|
|
138
|
|
|
if (2 != count($c)) { |
139
|
|
|
continue; |
140
|
|
|
} |
141
|
|
|
|
142
|
|
|
// validate direction |
143
|
|
|
$direction = strtolower($c[1]); |
144
|
|
|
if (!in_array($direction, ['asc', 'desc'])) { |
145
|
|
|
continue; |
146
|
|
|
} |
147
|
|
|
|
148
|
|
|
$sortParams[] = [$c[0], $direction]; |
149
|
|
|
} |
150
|
|
|
|
151
|
|
|
$this->sort = $sortParams; |
152
|
|
|
|
153
|
|
|
return $this; |
154
|
|
|
} |
155
|
|
|
|
156
|
|
|
/** |
157
|
|
|
* Gets the sort parameters. |
158
|
|
|
*/ |
159
|
|
|
public function getSort(): array |
160
|
|
|
{ |
161
|
|
|
return $this->sort; |
162
|
|
|
} |
163
|
|
|
|
164
|
|
|
/** |
165
|
|
|
* Sets the where parameters. |
166
|
|
|
* Accepts the following forms: |
167
|
|
|
* i) where(['name' => 'Bob']) |
168
|
|
|
* ii) where('name', 'Bob') |
169
|
|
|
* iii) where('balance', 100, '>') |
170
|
|
|
* iv) where('balance > 100'). |
171
|
|
|
* |
172
|
|
|
* @param array|string $where |
173
|
|
|
* @param mixed $value optional value |
174
|
|
|
* @param string|null $condition optional condition |
175
|
|
|
* |
176
|
|
|
* @return $this |
177
|
|
|
*/ |
178
|
|
|
public function where($where, $value = null, $condition = null) |
179
|
|
|
{ |
180
|
|
|
// handles i. |
181
|
|
|
if (is_array($where)) { |
182
|
|
|
$this->where = array_merge($this->where, $where); |
183
|
|
|
} else { |
184
|
|
|
// handles iii. |
185
|
|
|
$args = func_num_args(); |
186
|
|
|
if ($args > 2) { |
187
|
|
|
$this->where[] = [$where, $value, $condition]; |
188
|
|
|
// handles ii. |
189
|
|
|
} elseif (2 == $args) { |
190
|
|
|
$this->where[$where] = $value; |
191
|
|
|
// handles iv. |
192
|
|
|
} else { |
193
|
|
|
$this->where[] = $where; |
194
|
|
|
} |
195
|
|
|
} |
196
|
|
|
|
197
|
|
|
return $this; |
198
|
|
|
} |
199
|
|
|
|
200
|
|
|
/** |
201
|
|
|
* Gets the where parameters. |
202
|
|
|
*/ |
203
|
|
|
public function getWhere(): array |
204
|
|
|
{ |
205
|
|
|
return $this->where; |
206
|
|
|
} |
207
|
|
|
|
208
|
|
|
/** |
209
|
|
|
* Adds a join to the query. Matches a property on this model |
210
|
|
|
* to the ID of the model we are joining. |
211
|
|
|
* |
212
|
|
|
* @param string $model model being joined |
213
|
|
|
* @param string $column name of local property |
214
|
|
|
* |
215
|
|
|
* @return $this |
216
|
|
|
*/ |
217
|
|
|
public function join($model, string $column, string $foreignKey) |
218
|
|
|
{ |
219
|
|
|
$this->joins[] = [$model, $column, $foreignKey]; |
220
|
|
|
|
221
|
|
|
return $this; |
222
|
|
|
} |
223
|
|
|
|
224
|
|
|
/** |
225
|
|
|
* Gets the joins. |
226
|
|
|
*/ |
227
|
|
|
public function getJoins(): array |
228
|
|
|
{ |
229
|
|
|
return $this->joins; |
230
|
|
|
} |
231
|
|
|
|
232
|
|
|
/** |
233
|
|
|
* Marks a relationship property on the model that should be eager loaded. |
234
|
|
|
* |
235
|
|
|
* @param string $k local property containing the relationship |
236
|
|
|
* |
237
|
|
|
* @return $this |
238
|
|
|
*/ |
239
|
|
|
public function with(string $k) |
240
|
|
|
{ |
241
|
|
|
if (!in_array($k, $this->eagerLoaded)) { |
242
|
|
|
$this->eagerLoaded[] = $k; |
243
|
|
|
} |
244
|
|
|
|
245
|
|
|
return $this; |
246
|
|
|
} |
247
|
|
|
|
248
|
|
|
/** |
249
|
|
|
* Gets the relationship properties that are going to be eager-loaded. |
250
|
|
|
*/ |
251
|
|
|
public function getWith(): array |
252
|
|
|
{ |
253
|
|
|
return $this->eagerLoaded; |
254
|
|
|
} |
255
|
|
|
|
256
|
|
|
/** |
257
|
|
|
* Executes the query against the model's driver. |
258
|
|
|
* |
259
|
|
|
* @return array results |
260
|
|
|
*/ |
261
|
|
|
public function execute(): array |
262
|
|
|
{ |
263
|
|
|
$modelClass = $this->model; |
264
|
|
|
$driver = $modelClass::getDriver(); |
265
|
|
|
|
266
|
|
|
$eagerLoadedProperties = []; |
267
|
|
|
// instantiate a model so that initialize() is called and properties are filled in |
268
|
|
|
// otherwise this empty model is not used |
269
|
|
|
$model = new $modelClass(); |
|
|
|
|
270
|
|
|
$ids = []; |
271
|
|
|
foreach ($this->eagerLoaded as $k) { |
272
|
|
|
$eagerLoadedProperties[$k] = $modelClass::definition()->get($k); |
273
|
|
|
$ids[$k] = []; |
274
|
|
|
} |
275
|
|
|
|
276
|
|
|
// fetch the models matching the query |
277
|
|
|
/** @var Model[] $models */ |
278
|
|
|
$models = []; |
279
|
|
|
foreach ($driver->queryModels($this) as $j => $row) { |
280
|
|
|
// type-cast the values because they came from the database |
281
|
|
|
foreach ($row as $k => &$v) { |
282
|
|
|
if ($property = $modelClass::definition()->get($k)) { |
283
|
|
|
$v = Type::cast($property, $v); |
284
|
|
|
} |
285
|
|
|
} |
286
|
|
|
|
287
|
|
|
// create the model and cache the loaded values |
288
|
|
|
$models[] = new $modelClass($row); |
289
|
|
|
|
290
|
|
|
// capture any local ids for eager loading relationships |
291
|
|
|
foreach ($this->eagerLoaded as $k) { |
292
|
|
|
$localKey = $eagerLoadedProperties[$k]['local_key']; |
293
|
|
|
if (isset($row[$localKey])) { |
294
|
|
|
$ids[$k][$j] = $row[$localKey]; |
295
|
|
|
} |
296
|
|
|
} |
297
|
|
|
} |
298
|
|
|
|
299
|
|
|
// hydrate the eager loaded relationships |
300
|
|
|
foreach ($this->eagerLoaded as $k) { |
301
|
|
|
$property = $eagerLoadedProperties[$k]; |
302
|
|
|
$relationModelClass = $property->getForeignModelClass(); |
303
|
|
|
$type = $property->getRelationshipType(); |
304
|
|
|
|
305
|
|
|
if (Relationship::BELONGS_TO == $type) { |
306
|
|
|
$relationships = $this->fetchRelationships($relationModelClass, $ids[$k], $property->getForeignKey(), false); |
307
|
|
|
|
308
|
|
|
foreach ($ids[$k] as $j => $id) { |
309
|
|
|
if (isset($relationships[$id])) { |
310
|
|
|
$models[$j]->setRelation($k, $relationships[$id]); |
311
|
|
|
// older style properties do not support this type of hydration |
312
|
|
|
if (!$property->isPersisted()) { |
313
|
|
|
$models[$j]->hydrateValue($k, $relationships[$id]); |
314
|
|
|
} |
315
|
|
|
} |
316
|
|
|
} |
317
|
|
|
} elseif (Relationship::HAS_ONE == $type) { |
318
|
|
|
$relationships = $this->fetchRelationships($relationModelClass, $ids[$k], $property->getForeignKey(), false); |
319
|
|
|
|
320
|
|
View Code Duplication |
foreach ($ids[$k] as $j => $id) { |
|
|
|
|
321
|
|
|
if (isset($relationships[$id])) { |
322
|
|
|
$models[$j]->setRelation($k, $relationships[$id]); |
323
|
|
|
// older style properties do not support this type of hydration |
324
|
|
|
if (!$property->isPersisted()) { |
325
|
|
|
$models[$j]->hydrateValue($k, $relationships[$id]); |
326
|
|
|
} |
327
|
|
|
} else { |
328
|
|
|
// when using has one eager loading we must |
329
|
|
|
// explicitly mark the relationship as null |
330
|
|
|
// for models not found during eager loading |
331
|
|
|
// or else it will trigger another DB call |
332
|
|
|
$models[$j]->clearRelation($k); |
333
|
|
|
|
334
|
|
|
// older style properties do not support this type of hydration |
335
|
|
|
if (!$property->isPersisted()) { |
336
|
|
|
$models[$j]->hydrateValue($k, null); |
337
|
|
|
} |
338
|
|
|
} |
339
|
|
|
} |
340
|
|
|
} elseif (Relationship::HAS_MANY == $type) { |
341
|
|
|
$relationships = $this->fetchRelationships($relationModelClass, $ids[$k], $property->getForeignKey(), true); |
342
|
|
|
|
343
|
|
View Code Duplication |
foreach ($ids[$k] as $j => $id) { |
|
|
|
|
344
|
|
|
if (isset($relationships[$id])) { |
345
|
|
|
$models[$j]->setRelationCollection($k, $relationships[$id]); |
346
|
|
|
// older style properties do not support this type of hydration |
347
|
|
|
if (!$property->isPersisted()) { |
348
|
|
|
$models[$j]->hydrateValue($k, $relationships[$id]); |
349
|
|
|
} |
350
|
|
|
} else { |
351
|
|
|
$models[$j]->setRelationCollection($k, []); |
352
|
|
|
// older style properties do not support this type of hydration |
353
|
|
|
if (!$property->isPersisted()) { |
354
|
|
|
$models[$j]->hydrateValue($k, []); |
355
|
|
|
} |
356
|
|
|
} |
357
|
|
|
} |
358
|
|
|
} |
359
|
|
|
} |
360
|
|
|
|
361
|
|
|
return $models; |
362
|
|
|
} |
363
|
|
|
|
364
|
|
|
/** |
365
|
|
|
* Creates an iterator for a search. |
366
|
|
|
* |
367
|
|
|
* @return Iterator |
368
|
|
|
*/ |
369
|
|
|
public function all() |
370
|
|
|
{ |
371
|
|
|
return new Iterator($this); |
372
|
|
|
} |
373
|
|
|
|
374
|
|
|
/** |
375
|
|
|
* Executes the query against the model's driver and returns the first result. |
376
|
|
|
* |
377
|
|
|
* @return array|Model|null when $limit = 1, returns a single model or null, otherwise returns an array |
378
|
|
|
*/ |
379
|
|
|
public function first(int $limit = 1) |
380
|
|
|
{ |
381
|
|
|
$models = $this->limit($limit)->execute(); |
382
|
|
|
|
383
|
|
|
if (1 == $limit) { |
384
|
|
|
return (1 == count($models)) ? $models[0] : null; |
385
|
|
|
} |
386
|
|
|
|
387
|
|
|
return $models; |
388
|
|
|
} |
389
|
|
|
|
390
|
|
|
/** |
391
|
|
|
* Gets the number of models matching the query. |
392
|
|
|
*/ |
393
|
|
|
public function count(): int |
394
|
|
|
{ |
395
|
|
|
$model = $this->model; |
396
|
|
|
$driver = $model::getDriver(); |
397
|
|
|
|
398
|
|
|
return $driver->count($this); |
399
|
|
|
} |
400
|
|
|
|
401
|
|
|
/** |
402
|
|
|
* Gets the sum of a property matching the query. |
403
|
|
|
* |
404
|
|
|
* @return number |
405
|
|
|
*/ |
406
|
|
|
public function sum(string $property) |
407
|
|
|
{ |
408
|
|
|
$model = $this->model; |
409
|
|
|
$driver = $model::getDriver(); |
410
|
|
|
|
411
|
|
|
return $driver->sum($this, $property); |
412
|
|
|
} |
413
|
|
|
|
414
|
|
|
/** |
415
|
|
|
* Gets the average of a property matching the query. |
416
|
|
|
* |
417
|
|
|
* @return number |
418
|
|
|
*/ |
419
|
|
|
public function average(string $property) |
420
|
|
|
{ |
421
|
|
|
$model = $this->model; |
422
|
|
|
$driver = $model::getDriver(); |
423
|
|
|
|
424
|
|
|
return $driver->average($this, $property); |
425
|
|
|
} |
426
|
|
|
|
427
|
|
|
/** |
428
|
|
|
* Gets the max of a property matching the query. |
429
|
|
|
* |
430
|
|
|
* @return number |
431
|
|
|
*/ |
432
|
|
|
public function max(string $property) |
433
|
|
|
{ |
434
|
|
|
$model = $this->model; |
435
|
|
|
$driver = $model::getDriver(); |
436
|
|
|
|
437
|
|
|
return $driver->max($this, $property); |
438
|
|
|
} |
439
|
|
|
|
440
|
|
|
/** |
441
|
|
|
* Gets the min of a property matching the query. |
442
|
|
|
* |
443
|
|
|
* @return number |
444
|
|
|
*/ |
445
|
|
|
public function min(string $property) |
446
|
|
|
{ |
447
|
|
|
$model = $this->model; |
448
|
|
|
$driver = $model::getDriver(); |
449
|
|
|
|
450
|
|
|
return $driver->min($this, $property); |
451
|
|
|
} |
452
|
|
|
|
453
|
|
|
/** |
454
|
|
|
* Updates all of the models matched by this query. |
455
|
|
|
* |
456
|
|
|
* @todo should be optimized to be done in a single call to the data layer |
457
|
|
|
* |
458
|
|
|
* @param array $params key-value update parameters |
459
|
|
|
* |
460
|
|
|
* @return int # of models updated |
461
|
|
|
*/ |
462
|
|
|
public function set(array $params): int |
463
|
|
|
{ |
464
|
|
|
$n = 0; |
465
|
|
|
foreach ($this->all() as $model) { |
466
|
|
|
$model->set($params); |
467
|
|
|
++$n; |
468
|
|
|
} |
469
|
|
|
|
470
|
|
|
return $n; |
471
|
|
|
} |
472
|
|
|
|
473
|
|
|
/** |
474
|
|
|
* Deletes all of the models matched by this query. |
475
|
|
|
* |
476
|
|
|
* @todo should be optimized to be done in a single call to the data layer |
477
|
|
|
* |
478
|
|
|
* @return int # of models deleted |
479
|
|
|
*/ |
480
|
|
|
public function delete(): int |
481
|
|
|
{ |
482
|
|
|
$n = 0; |
483
|
|
|
foreach ($this->all() as $model) { |
484
|
|
|
$model->delete(); |
485
|
|
|
++$n; |
486
|
|
|
} |
487
|
|
|
|
488
|
|
|
return $n; |
489
|
|
|
} |
490
|
|
|
|
491
|
|
|
/** |
492
|
|
|
* Hydrates the eager-loaded relationships for a given set of IDs. |
493
|
|
|
* |
494
|
|
|
* @param string $modelClass |
495
|
|
|
* @param bool $multiple when true will condense |
496
|
|
|
* |
497
|
|
|
* @return Model[] |
498
|
|
|
*/ |
499
|
|
|
private function fetchRelationships($modelClass, array $ids, string $foreignKey, bool $multiple): array |
500
|
|
|
{ |
501
|
|
|
$uniqueIds = array_unique($ids); |
502
|
|
|
if (0 === count($uniqueIds)) { |
503
|
|
|
return []; |
504
|
|
|
} |
505
|
|
|
|
506
|
|
|
$in = $foreignKey.' IN ('.implode(',', $uniqueIds).')'; |
507
|
|
|
$models = $modelClass::where($in) |
508
|
|
|
->first(self::MAX_LIMIT); |
509
|
|
|
|
510
|
|
|
$result = []; |
511
|
|
|
foreach ($models as $model) { |
512
|
|
|
if ($multiple) { |
513
|
|
|
if (!isset($result[$model->$foreignKey])) { |
514
|
|
|
$result[$model->$foreignKey] = []; |
515
|
|
|
} |
516
|
|
|
$result[$model->$foreignKey][] = $model; |
517
|
|
|
} else { |
518
|
|
|
$result[$model->$foreignKey] = $model; |
519
|
|
|
} |
520
|
|
|
} |
521
|
|
|
|
522
|
|
|
return $result; |
523
|
|
|
} |
524
|
|
|
} |
525
|
|
|
|
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVar
assignment in line 1 and the$higher
assignment in line 2 are dead. The first because$myVar
is never used and the second because$higher
is always overwritten for every possible time line.