HasManyRelation::initInstances() - Code Metrics - Inspection of "more tests" - spiral/components - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — feature/pre-split (0a985a)

by Anton

created 2017-01-16 15:14 UTC

HasManyRelation::initInstances() B

↳ Parent: HasManyRelation

Complexity

Conditions	5
Paths	2

Size

Total Lines	23
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	5
eloc	12
nc	2
nop	0
dl	0
loc	23
rs	8.5906
c	0
b	0
f	0

<?php
/**
 * components
 *
 * @author    Wolfy-J
 */
namespace Spiral\ORM\Entities\Relations;

use Spiral\Database\Exceptions\QueryException;
use Spiral\ORM\CommandInterface;
use Spiral\ORM\Commands\NullCommand;
use Spiral\ORM\Commands\TransactionalCommand;
use Spiral\ORM\ContextualCommandInterface;
use Spiral\ORM\Entities\Relations\Traits\MatchTrait;
use Spiral\ORM\Exceptions\RelationException;
use Spiral\ORM\Exceptions\SelectorException;
use Spiral\ORM\ORMInterface;
use Spiral\ORM\Record;
use Spiral\ORM\RecordInterface;
use Spiral\ORM\RelationInterface;

/**
 * Attention, this relation delete operation works inside loaded scope!
 *
 * When empty array assigned to relation it will schedule all related instances to be deleted.
 *
 * If you wish to load with relation WITHOUT loading previous records use [] initialization.
 */
class HasManyRelation extends AbstractRelation implements \IteratorAggregate
{
    use MatchTrait;

    /**
     * @var bool
     */
    private $autoload = true;

    /**
     * Loaded list of records.
     *
     * @var RecordInterface[]
     */
    private $instances = [];

    /**
     * Records deleted from list. Potentially pre-schedule command?
     *
     * @var RecordInterface[]
     */
    private $deletedInstances = [];

    /**
     * {@inheritdoc}
     */
    public function withContext(
        RecordInterface $parent,
        bool $loaded = false,
        array $data = null
    ): RelationInterface {
        $hasMany = parent::withContext($parent, $loaded, $data);

        /**
         * @var self $hasMany
         */
        if ($hasMany->loaded) {
            //Init all nested models immidiatelly
            $hasMany->initInstances();
        }

        return $hasMany->initInstances();
    }

    /**
     * Partial selections will not be autoloaded.
     *
     * Example:
     *
     * $post = $this->findPost(); //no comments
     * $post->comments->partial(true);
     * assert($post->comments->count() == 0); //never loaded
     *
     * $post->comments->add($comment);
     *
     * @param bool $partial
     *
     * @return HasManyRelation
     */
    public function partial(bool $partial = true): self
    {
        $this->autoload = !$partial;

        return $this;
    }

    /**
     * @return bool
     */
    public function isPartial(): bool
    {
        return !$this->autoload;
    }

    /**
     * {@inheritdoc}
     *
     * @param bool $force When true all existed records will be loaded and removed.
     *
     * @throws RelationException
     */
    public function setRelated($value, bool $force = false)
    {
        $this->autoload = $force;
        $this->loadData();

        if (is_null($value)) {
            $value = [];
        }

        if (!is_array($value)) {
            throw new RelationException("HasMany relation can only be set with array of entities");
        }

        //Cleaning existed instances
        $this->deletedInstances = array_unique(array_merge(
            $this->deletedInstances,
            $this->instances
        ));

        $this->instances = [];
        foreach ($value as $item) {
            if (!is_null($item)) {
                $this->assertValid($item);
                $this->instances[] = $item;
            }
        }
    }

    /**
     * Has many relation represent itself (see getIterator method).
     *
     * @return $this
     */
    public function getRelated()
    {
        return $this;
    }

    /**
     * Iterate over instance set.
     *
     * @return \ArrayIterator
     */
    public function getIterator()
    {
        return new \ArrayIterator($this->loadData(true)->instances);
    }

    /**
     * Iterate over deleted instances.
     *
     * @return \ArrayIterator
     */
    public function getDeleted()
    {
        return new \ArrayIterator($this->deletedInstances);
    }

    /**
     * Add new record into entity set. Attention, usage of this method WILL make relation partial.
     *
     * @param RecordInterface $record
     *
     * @throws RelationException
     */
    public function add(RecordInterface $record)
    {
        $this->assertValid($record);

        $this->autoload = false;
        $this->instances[] = $record;
    }

    /**
     * Method will autoload data.
     *
     * @param array|RecordInterface|mixed $query Fields, entity or PK.
     *
     * @return bool
     */
    public function has($query): bool
    {
        return !empty($this->matchOne($query));
    }

    /**
     * Delete one record, strict compaction, make sure exactly same instance is given.
     *
     * @param RecordInterface $record
     */
    public function delete(RecordInterface $record)
    {
        $this->deleteMultiple([$record]);
    }

    /**
     * Delete multiple records, strict compaction, make sure exactly same instance is given. Method
     * would not autoload instance and will mark it as partial.
     *
     * @param array|\Traversable $records
     */
    public function deleteMultiple($records)
    {
        //Partial
        $this->autoload = false;

        foreach ($records as $record) {
            $this->assertValid($record);

            foreach ($this->instances as $index => $instance) {
                if ($instance === $record) {
                    //Remove from save
                    unset($this->instances[$index]);
                    $this->deletedInstances[] = $instance;
                    break;
                }
            }
        }

        $this->instances = array_values($this->instances);
    }

    /**
     * Fine one entity for a given query or return null. Method will autoload data.
     *
     * Example: ->matchOne(['value' => 'something', ...]);
     *
     * @param array|RecordInterface|mixed $query Fields, entity or PK.
     *
     * @return RecordInterface|null
     */
    public function matchOne($query)
    {
        foreach ($this->loadData(true)->instances as $instance) {
            if ($this->match($instance, $query)) {
                return $instance;
            }
        }

        return null;
    }

    /**
     * Return only instances matched given query, performed in memory! Only simple conditions are
     * allowed. Not "find" due trademark violation. Method will autoload data.
     *
     * Example: ->matchMultiple(['value' => 'something', ...]);
     *
     * @param array|RecordInterface|mixed $query Fields, entity or PK.
     *
     * @return \ArrayIterator
     */
    public function matchMultiple($query)
    {
        $result = [];
        foreach ($this->loadData()->instances as $instance) {
            if ($this->match($instance, $query)) {
                $result[] = $instance;
            }
        }

        return new \ArrayIterator($result);
    }

    /**
     * {@inheritdoc}
     */
    public function queueCommands(ContextualCommandInterface $command): CommandInterface
    {
        //No autoloading here

        if (empty($this->instances) && empty($this->deletedInstances)) {
            return new NullCommand();
        }

        $transaction = new TransactionalCommand();

        //Delete old instances first
        foreach ($this->deletedInstances as $deleted) {
            //To de-associate use BELONGS_TO relation
            $transaction->addCommand($deleted->queueDelete());
        }

        //Store all instances
        foreach ($this->instances as $instance) {
            $transaction->addCommand($this->queueRelated($command, $instance));
        }

        //Flushing instances
        $this->deletedInstances = [];

        return $transaction;
    }

    /**
     * {@inheritdoc}
     *
     * @return self
     *
     * @throws SelectorException
     * @throws QueryException (needs wrapping)
     */
    protected function loadData(bool $autoload = true): self
    {
        if ($this->loaded) {
            return $this;
        }

        $this->loaded = true;

        if (empty($this->data) || !is_array($this->data)) {
            if ($this->autoload && $autoload) {
                //Only for non partial selections
                $this->data = $this->loadRelated();
            } else {
                $this->data = [];
            }
        }

        return $this->initInstances();
    }

    /**
     * Init pre-loaded data.
     *
     * @return HasManyRelation
     */
    private function initInstances(): self
    {
        if (is_array($this->data) && !empty($this->data)) {
            foreach ($this->data as $item) {
                if ($this->has($item)) {
                    //Skip duplicates
                    continue;
                }

                $this->instances[] = $this->orm->make(
                    $this->class,
                    $item,
                    ORMInterface::STATE_LOADED,
                    true
                );
            }
        }

        //Memory free
        $this->data = null;


        return $this;
    }

    /**
     * @param ContextualCommandInterface $command
     * @param RecordInterface            $instance
     *
     * @return CommandInterface
     */
    private function queueRelated(
        ContextualCommandInterface $command,
        RecordInterface $instance
    ): CommandInterface {
        //Inner storing inner instance
        $inner = $instance->queueStore(true);

        /*
         * Instance FK not synced.
         */
        if (
            $this->value($instance, Record::OUTER_KEY)
            != $this->value($this->parent, Record::INNER_KEY)
            || empty($this->value($this->parent, Record::INNER_KEY))
        ) {
            if ($this->primaryColumnOf($this->parent) == $this->key(Record::INNER_KEY)) {
                /**
                 * Particular case when parent entity exists but now saved yet AND outer key is PK.
                 * Basically inversed case of BELONGS_TO.
                 */
                $command->onExecute(function (ContextualCommandInterface $command) use ($inner) {
                    $inner->addContext($this->schema[Record::OUTER_KEY], $command->primaryKey());
                });
            } else {
                //Syncing FKs
                $inner->addContext(
                    $this->key(Record::OUTER_KEY),
                    $this->parent->getField($this->schema[Record::INNER_KEY])
                );
            }
        }

        return $inner;
    }

    /**
     * Fetch data from database. Lazy load.
     *
     * @return array
     */
    protected function loadRelated(): array
    {
        $innerKey = $this->key(Record::INNER_KEY);
        if (!empty($this->parent->getField($innerKey))) {
            return $this->orm
                ->selector($this->class)
                ->where($this->key(Record::OUTER_KEY), $this->parent->getField($innerKey))

                ->fetchData();
        }

        return [];
    }
}

1			<?php
2			/**
3			* components
4			*
5			* @author Wolfy-J
6			*/
7			namespace Spiral\ORM\Entities\Relations;
8
9			use Spiral\Database\Exceptions\QueryException;
10			use Spiral\ORM\CommandInterface;
11			use Spiral\ORM\Commands\NullCommand;
12			use Spiral\ORM\Commands\TransactionalCommand;
13			use Spiral\ORM\ContextualCommandInterface;
14			use Spiral\ORM\Entities\Relations\Traits\MatchTrait;
15			use Spiral\ORM\Exceptions\RelationException;
16			use Spiral\ORM\Exceptions\SelectorException;
17			use Spiral\ORM\ORMInterface;
18			use Spiral\ORM\Record;
19			use Spiral\ORM\RecordInterface;
20			use Spiral\ORM\RelationInterface;
21
22			/**
23			* Attention, this relation delete operation works inside loaded scope!
24			*
25			* When empty array assigned to relation it will schedule all related instances to be deleted.
26			*
27			* If you wish to load with relation WITHOUT loading previous records use [] initialization.
28			*/
29			class HasManyRelation extends AbstractRelation implements \IteratorAggregate
30			{
31			use MatchTrait;
32
33			/**
34			* @var bool
35			*/
36			private $autoload = true;
37
38			/**
39			* Loaded list of records.
40			*
41			* @var RecordInterface[]
42			*/
43			private $instances = [];
44
45			/**
46			* Records deleted from list. Potentially pre-schedule command?
47			*
48			* @var RecordInterface[]
49			*/
50			private $deletedInstances = [];
51
52			/**
53			* {@inheritdoc}
54			*/
55			public function withContext(
56			RecordInterface $parent,
57			bool $loaded = false,
58			array $data = null
59			): RelationInterface {
60			$hasMany = parent::withContext($parent, $loaded, $data);
61
62			/**
63			* @var self $hasMany
64			*/
65			if ($hasMany->loaded) {
66			//Init all nested models immidiatelly
67			$hasMany->initInstances();
68			}
69
70			return $hasMany->initInstances();
71			}
72
73			/**
74			* Partial selections will not be autoloaded.
75			*
76			* Example:
77			*
78			* $post = $this->findPost(); //no comments
79			* $post->comments->partial(true);
80			* assert($post->comments->count() == 0); //never loaded
81			*
82			* $post->comments->add($comment);
83			*
84			* @param bool $partial
85			*
86			* @return HasManyRelation
87			*/
88			public function partial(bool $partial = true): self
89			{
90			$this->autoload = !$partial;
91
92			return $this;
93			}
94
95			/**
96			* @return bool
97			*/
98			public function isPartial(): bool
99			{
100			return !$this->autoload;
101			}
102
103			/**
104			* {@inheritdoc}
105			*
106			* @param bool $force When true all existed records will be loaded and removed.
107			*
108			* @throws RelationException
109			*/
110			public function setRelated($value, bool $force = false)
111			{
112			$this->autoload = $force;
113			$this->loadData();
114
115			if (is_null($value)) {
116			$value = [];
117			}
118
119			if (!is_array($value)) {
120			throw new RelationException("HasMany relation can only be set with array of entities");
121			}
122
123			//Cleaning existed instances
124			$this->deletedInstances = array_unique(array_merge(
125			$this->deletedInstances,
126			$this->instances
127			));
128
129			$this->instances = [];
130			foreach ($value as $item) {
131			if (!is_null($item)) {
132			$this->assertValid($item);
133			$this->instances[] = $item;
134			}
135			}
136			}
137
138			/**
139			* Has many relation represent itself (see getIterator method).
140			*
141			* @return $this
142			*/
143			public function getRelated()
144			{
145			return $this;
146			}
147
148			/**
149			* Iterate over instance set.
150			*
151			* @return \ArrayIterator
152			*/
153			public function getIterator()
154			{
155			return new \ArrayIterator($this->loadData(true)->instances);
156			}
157
158			/**
159			* Iterate over deleted instances.
160			*
161			* @return \ArrayIterator
162			*/
163			public function getDeleted()
164			{
165			return new \ArrayIterator($this->deletedInstances);
166			}
167
168			/**
169			* Add new record into entity set. Attention, usage of this method WILL make relation partial.
170			*
171			* @param RecordInterface $record
172			*
173			* @throws RelationException
174			*/
175			public function add(RecordInterface $record)
176			{
177			$this->assertValid($record);
178
179			$this->autoload = false;
180			$this->instances[] = $record;
181			}
182
183			/**
184			* Method will autoload data.
185			*
186			* @param array\|RecordInterface\|mixed $query Fields, entity or PK.
187			*
188			* @return bool
189			*/
190			public function has($query): bool
191			{
192			return !empty($this->matchOne($query));
193			}
194
195			/**
196			* Delete one record, strict compaction, make sure exactly same instance is given.
197			*
198			* @param RecordInterface $record
199			*/
200			public function delete(RecordInterface $record)
201			{
202			$this->deleteMultiple([$record]);
203			}
204
205			/**
206			* Delete multiple records, strict compaction, make sure exactly same instance is given. Method
207			* would not autoload instance and will mark it as partial.
208			*
209			* @param array\|\Traversable $records
210			*/
211			public function deleteMultiple($records)
212			{
213			//Partial
214			$this->autoload = false;
215
216			foreach ($records as $record) {
217			$this->assertValid($record);
218
219			foreach ($this->instances as $index => $instance) {
220			if ($instance === $record) {
221			//Remove from save
222			unset($this->instances[$index]);
223			$this->deletedInstances[] = $instance;
224			break;
225			}
226			}
227			}
228
229			$this->instances = array_values($this->instances);
230			}
231
232			/**
233			* Fine one entity for a given query or return null. Method will autoload data.
234			*
235			* Example: ->matchOne(['value' => 'something', ...]);
236			*
237			* @param array\|RecordInterface\|mixed $query Fields, entity or PK.
238			*
239			* @return RecordInterface\|null
240			*/
241			public function matchOne($query)
242			{
243			foreach ($this->loadData(true)->instances as $instance) {
244			if ($this->match($instance, $query)) {
245			return $instance;
246			}
247			}
248
249			return null;
250			}
251
252			/**
253			* Return only instances matched given query, performed in memory! Only simple conditions are
254			* allowed. Not "find" due trademark violation. Method will autoload data.
255			*
256			* Example: ->matchMultiple(['value' => 'something', ...]);
257			*
258			* @param array\|RecordInterface\|mixed $query Fields, entity or PK.
259			*
260			* @return \ArrayIterator
261			*/
262			public function matchMultiple($query)
263			{
264			$result = [];
265			foreach ($this->loadData()->instances as $instance) {
266			if ($this->match($instance, $query)) {
267			$result[] = $instance;
268			}
269			}
270
271			return new \ArrayIterator($result);
272			}
273
274			/**
275			* {@inheritdoc}
276			*/
277			public function queueCommands(ContextualCommandInterface $command): CommandInterface
278			{
279			//No autoloading here
280
281			if (empty($this->instances) && empty($this->deletedInstances)) {
282			return new NullCommand();
283			}
284
285			$transaction = new TransactionalCommand();
286
287			//Delete old instances first
288			foreach ($this->deletedInstances as $deleted) {
289			//To de-associate use BELONGS_TO relation
290			$transaction->addCommand($deleted->queueDelete());
291			}
292
293			//Store all instances
294			foreach ($this->instances as $instance) {
295			$transaction->addCommand($this->queueRelated($command, $instance));
296			}
297
298			//Flushing instances
299			$this->deletedInstances = [];
300
301			return $transaction;
302			}
303
304			/**
305			* {@inheritdoc}
306			*
307			* @return self
308			*
309			* @throws SelectorException
310			* @throws QueryException (needs wrapping)
311			*/
312			protected function loadData(bool $autoload = true): self
313			{
314			if ($this->loaded) {
315			return $this;
316			}
317
318			$this->loaded = true;
319
320			if (empty($this->data) \|\| !is_array($this->data)) {
321			if ($this->autoload && $autoload) {
322			//Only for non partial selections
323			$this->data = $this->loadRelated();
324			} else {
325			$this->data = [];
326			}
327			}
328
329			return $this->initInstances();
330			}
331
332			/**
333			* Init pre-loaded data.
334			*
335			* @return HasManyRelation
336			*/
337			private function initInstances(): self
338			{
339			if (is_array($this->data) && !empty($this->data)) {
340			foreach ($this->data as $item) {
341			if ($this->has($item)) {
342			//Skip duplicates
343			continue;
344			}
345
346			$this->instances[] = $this->orm->make(
347			$this->class,
348			$item,
349			ORMInterface::STATE_LOADED,
350			true
351			);
352			}
353			}
354
355			//Memory free
356			$this->data = null;
			0 ignored issues – show Documentation Bug introduced 2017-01-15 22:00 UTC by Report Bug Copy Issue Report It seems like `null` of type `null` is incompatible with the declared type `array` of property `$data`. Our type inference engine has found an assignment to a property that is incompatible with the declared type of that property. Either this assignment is in error or the assigned type should be added to the documentation/type hint for that property.. Loading history...
357
358			return $this;
359			}
360
361			/**
362			* @param ContextualCommandInterface $command
363			* @param RecordInterface $instance
364			*
365			* @return CommandInterface
366			*/
367			private function queueRelated(
368			ContextualCommandInterface $command,
369			RecordInterface $instance
370			): CommandInterface {
371			//Inner storing inner instance
372			$inner = $instance->queueStore(true);
373
374			/*
375			* Instance FK not synced.
376			*/
377			if (
378			$this->value($instance, Record::OUTER_KEY)
379			!= $this->value($this->parent, Record::INNER_KEY)
380			\|\| empty($this->value($this->parent, Record::INNER_KEY))
381			) {
382			if ($this->primaryColumnOf($this->parent) == $this->key(Record::INNER_KEY)) {
383			/**
384			* Particular case when parent entity exists but now saved yet AND outer key is PK.
385			* Basically inversed case of BELONGS_TO.
386			*/
387			$command->onExecute(function (ContextualCommandInterface $command) use ($inner) {
388			$inner->addContext($this->schema[Record::OUTER_KEY], $command->primaryKey());
389			});
390			} else {
391			//Syncing FKs
392			$inner->addContext(
393			$this->key(Record::OUTER_KEY),
394			$this->parent->getField($this->schema[Record::INNER_KEY])
395			);
396			}
397			}
398
399			return $inner;
400			}
401
402			/**
403			* Fetch data from database. Lazy load.
404			*
405			* @return array
406			*/
407			protected function loadRelated(): array
408			{
409			$innerKey = $this->key(Record::INNER_KEY);
410			if (!empty($this->parent->getField($innerKey))) {
411			return $this->orm
412			->selector($this->class)
413			->where($this->key(Record::OUTER_KEY), $this->parent->getField($innerKey))
			0 ignored issues – show Unused Code introduced 2017-01-15 22:00 UTC by Report Bug Copy Issue Report The call to `RecordSelector::where()` has too many arguments starting with `$this->parent->getField($innerKey)`. This check compares calls to functions or methods with their respective definitions. If the call has more arguments than are defined, it raises an issue. If a function is defined several times with a different number of parameters, the check may pick up the wrong definition and report false positives. One codebase where this has been known to happen is Wordpress. In this case you can add the `@ignore` PhpDoc annotation to the duplicate definition and it will be ignored. Loading history...
414			->fetchData();
415			}
416
417			return [];
418			}
419			}

spiral / components

Branch — feature/pre-split (0a985a)

HasManyRelation::initInstances() B

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