HasManyRelation::loadData() - Code Metrics - Inspection of "Merge remote-tracking branch 'origin/feature/pre-s..." - spiral/components - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — feature/pre-split (c69968)

by Anton

created 2017-01-20 12:54 UTC

HasManyRelation::loadData() B

↳ Parent: HasManyRelation

Complexity

Conditions	6
Paths	4

Size

Total Lines	19
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	6
eloc	10
nc	4
nop	1
dl	0
loc	19
rs	8.8571
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\RecordIterator;
use Spiral\ORM\Entities\RecordSelector;
use Spiral\ORM\Entities\Relations\Traits\LookupTrait;
use Spiral\ORM\Entities\Relations\Traits\MatchTrait;
use Spiral\ORM\Entities\Relations\Traits\PartialTrait;
use Spiral\ORM\Exceptions\RelationException;
use Spiral\ORM\Exceptions\SelectorException;
use Spiral\ORM\Helpers\WhereDecorator;
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, \Countable
{
    use MatchTrait, PartialTrait, LookupTrait;

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

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

    /**
     * {@inheritdoc}
     */
    public function hasRelated(): bool
    {
        if (!$this->isLoaded()) {
            //Lazy loading our relation data
            $this->loadData();
        }

        return !empty($this->instances);
    }

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

        /** @var self $hasMany */
        return $hasMany->initInstances();
    }

    /**
     * {@inheritdoc}
     *
     * @throws RelationException
     */
    public function setRelated($value)
    {
        $this->loadData(true);

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

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

        //todo: optimize this section!?

        //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);
    }

    /**
     * @return int
     */
    public function count()
    {
        return count($this->loadData(true)->instances);
    }

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

    /**
     * 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));
    }

    /**
     * Add new record into entity set. Attention, usage of this method WILL load relation data
     * unless partial.
     *
     * @param RecordInterface $record
     *
     * @return self
     *
     * @throws RelationException
     */
    public function add(RecordInterface $record): self
    {
        $this->assertValid($record);
        $this->loadData(true)->instances[] = $record;

        return $this;
    }

    /**
     * Delete one record, strict compaction, make sure exactly same instance is given.
     *
     * @param RecordInterface $record
     *
     * @return self
     *
     * @throws RelationException
     */
    public function delete(RecordInterface $record): self
    {
        $this->loadData(true);
        $this->assertValid($record);

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

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

        return $this;
    }

    /**
     * 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 $parentCommand): 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($parentCommand, $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 (excluded already selected)
                $this->data = $this->loadRelated();
            } else {
                $this->data = [];
            }
        }

        return $this->initInstances();
    }

    /**
     * Fetch data from database. Lazy load.
     *
     * @return array
     */
    protected function loadRelated(): array
    {
        $innerKey = $this->parent->getField($this->key(Record::INNER_KEY));
        if (!empty($innerKey)) {
            return $this->createSelector($innerKey)->fetchData();
        }

        return [];
    }

    /**
     * Create outer selector for a given inner key value.
     *
     * @param mixed $innerKey
     *
     * @return RecordSelector
     */
    protected function createSelector($innerKey): RecordSelector
    {
        $selector = $this->orm->selector($this->class)->where(
            $this->key(Record::OUTER_KEY),
            $innerKey

        );

        if (!empty($this->schema[Record::WHERE])) {
            //Configuring where conditions with alias resolution
            $decorator = new WhereDecorator($selector, 'where', $selector->getAlias());
            $decorator->where($this->schema[Record::WHERE]);

            return $selector;
        }

        return $selector;
    }

    /**
     * Init pre-loaded data.
     *
     * @return HasManyRelation
     */
    private function initInstances(): self
    {
        if (is_array($this->data) && !empty($this->data)) {
            //Iterates and instantiate records
            $iterator = new RecordIterator($this->data, $this->class, $this->orm);

            foreach ($iterator as $item) {
                if ($this->has($item)) {
                    //Skip duplicates
                    continue;
                }

                $this->instances[] = $item;
            }
        }

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

        return $this;
    }

    /**
     * @param ContextualCommandInterface $parentCommand
     * @param RecordInterface            $instance
     *
     * @return CommandInterface
     */
    private function queueRelated(
        ContextualCommandInterface $parentCommand,
        RecordInterface $instance
    ): CommandInterface {
        //Related entity store command
        $innerCommand = $instance->queueStore(true);

        if (!$this->isSynced($this->parent, $instance)) {
            //Delayed linking
            $parentCommand->onExecute(function ($outerCommand) use ($innerCommand) {
                $innerCommand->addContext(
                    $this->key(Record::OUTER_KEY),
                    $this->lookupKey(Record::INNER_KEY, $this->parent, $outerCommand)
                );
            });
        }

        return $innerCommand;
    }
}

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\RecordIterator;
15			use Spiral\ORM\Entities\RecordSelector;
16			use Spiral\ORM\Entities\Relations\Traits\LookupTrait;
17			use Spiral\ORM\Entities\Relations\Traits\MatchTrait;
18			use Spiral\ORM\Entities\Relations\Traits\PartialTrait;
19			use Spiral\ORM\Exceptions\RelationException;
20			use Spiral\ORM\Exceptions\SelectorException;
21			use Spiral\ORM\Helpers\WhereDecorator;
22			use Spiral\ORM\Record;
23			use Spiral\ORM\RecordInterface;
24			use Spiral\ORM\RelationInterface;
25
26			/**
27			* Attention, this relation delete operation works inside loaded scope!
28			*
29			* When empty array assigned to relation it will schedule all related instances to be deleted.
30			*
31			* If you wish to load with relation WITHOUT loading previous records use [] initialization.
32			*/
33			class HasManyRelation extends AbstractRelation implements \IteratorAggregate, \Countable
34			{
35			use MatchTrait, PartialTrait, LookupTrait;
36
37			/**
38			* Loaded list of records. SplObjectStorage?
39			*
40			* @var RecordInterface[]
41			*/
42			private $instances = [];
43
44			/**
45			* Records deleted from list. Potentially pre-schedule command?
46			*
47			* @var RecordInterface[]
48			*/
49			private $deletedInstances = [];
50
51			/**
52			* {@inheritdoc}
53			*/
54			public function hasRelated(): bool
55			{
56			if (!$this->isLoaded()) {
57			//Lazy loading our relation data
58			$this->loadData();
59			}
60
61			return !empty($this->instances);
62			}
63
64			/**
65			* {@inheritdoc}
66			*/
67			public function withContext(
68			RecordInterface $parent,
69			bool $loaded = false,
70			array $data = null
71			): RelationInterface {
72			$hasMany = parent::withContext($parent, $loaded, $data);
73
74			/** @var self $hasMany */
75			return $hasMany->initInstances();
76			}
77
78			/**
79			* {@inheritdoc}
80			*
81			* @throws RelationException
82			*/
83			public function setRelated($value)
84			{
85			$this->loadData(true);
86
87			if (is_null($value)) {
88			$value = [];
89			}
90
91			if (!is_array($value)) {
92			throw new RelationException("HasMany relation can only be set with array of entities");
93			}
94
95			//todo: optimize this section!?
96
97			//Cleaning existed instances
98			$this->deletedInstances = array_unique(array_merge(
99			$this->deletedInstances,
100			$this->instances
101			));
102
103			$this->instances = [];
104			foreach ($value as $item) {
105			if (!is_null($item)) {
106			$this->assertValid($item);
107			$this->instances[] = $item;
108			}
109			}
110			}
111
112			/**
113			* Has many relation represent itself (see getIterator method).
114			*
115			* @return $this
116			*/
117			public function getRelated()
118			{
119			return $this;
120			}
121
122			/**
123			* Iterate over instance set.
124			*
125			* @return \ArrayIterator
126			*/
127			public function getIterator()
128			{
129			return new \ArrayIterator($this->loadData(true)->instances);
130			}
131
132			/**
133			* @return int
134			*/
135			public function count()
136			{
137			return count($this->loadData(true)->instances);
138			}
139
140			/**
141			* Iterate over deleted instances.
142			*
143			* @return \ArrayIterator
144			*/
145			public function getDeleted()
146			{
147			return new \ArrayIterator($this->deletedInstances);
148			}
149
150			/**
151			* Method will autoload data.
152			*
153			* @param array\|RecordInterface\|mixed $query Fields, entity or PK.
154			*
155			* @return bool
156			*/
157			public function has($query): bool
158			{
159			return !empty($this->matchOne($query));
160			}
161
162			/**
163			* Add new record into entity set. Attention, usage of this method WILL load relation data
164			* unless partial.
165			*
166			* @param RecordInterface $record
167			*
168			* @return self
169			*
170			* @throws RelationException
171			*/
172			public function add(RecordInterface $record): self
173			{
174			$this->assertValid($record);
175			$this->loadData(true)->instances[] = $record;
176
177			return $this;
178			}
179
180			/**
181			* Delete one record, strict compaction, make sure exactly same instance is given.
182			*
183			* @param RecordInterface $record
184			*
185			* @return self
186			*
187			* @throws RelationException
188			*/
189			public function delete(RecordInterface $record): self
190			{
191			$this->loadData(true);
192			$this->assertValid($record);
193
194			foreach ($this->instances as $index => $instance) {
195			if ($this->match($instance, $record)) {
196			//Remove from save
197			unset($this->instances[$index]);
198			$this->deletedInstances[] = $instance;
199			break;
200			}
201			}
202
203			$this->instances = array_values($this->instances);
204
205			return $this;
206			}
207
208			/**
209			* Fine one entity for a given query or return null. Method will autoload data.
210			*
211			* Example: ->matchOne(['value' => 'something', ...]);
212			*
213			* @param array\|RecordInterface\|mixed $query Fields, entity or PK.
214			*
215			* @return RecordInterface\|null
216			*/
217			public function matchOne($query)
218			{
219			foreach ($this->loadData(true)->instances as $instance) {
220			if ($this->match($instance, $query)) {
221			return $instance;
222			}
223			}
224
225			return null;
226			}
227
228			/**
229			* Return only instances matched given query, performed in memory! Only simple conditions are
230			* allowed. Not "find" due trademark violation. Method will autoload data.
231			*
232			* Example: ->matchMultiple(['value' => 'something', ...]);
233			*
234			* @param array\|RecordInterface\|mixed $query Fields, entity or PK.
235			*
236			* @return \ArrayIterator
237			*/
238			public function matchMultiple($query)
239			{
240			$result = [];
241			foreach ($this->loadData()->instances as $instance) {
242			if ($this->match($instance, $query)) {
243			$result[] = $instance;
244			}
245			}
246
247			return new \ArrayIterator($result);
248			}
249
250			/**
251			* {@inheritdoc}
252			*/
253			public function queueCommands(ContextualCommandInterface $parentCommand): CommandInterface
254			{
255			//No autoloading here
256
257			if (empty($this->instances) && empty($this->deletedInstances)) {
258			return new NullCommand();
259			}
260
261			$transaction = new TransactionalCommand();
262
263			//Delete old instances first
264			foreach ($this->deletedInstances as $deleted) {
265			//To de-associate use BELONGS_TO relation
266			$transaction->addCommand($deleted->queueDelete());
267			}
268
269			//Store all instances
270			foreach ($this->instances as $instance) {
271			$transaction->addCommand($this->queueRelated($parentCommand, $instance));
272			}
273
274			//Flushing instances
275			$this->deletedInstances = [];
276
277			return $transaction;
278			}
279
280			/**
281			* {@inheritdoc}
282			*
283			* @return self
284			*
285			* @throws SelectorException
286			* @throws QueryException (needs wrapping)
287			*/
288			protected function loadData(bool $autoload = true): self
289			{
290			if ($this->loaded) {
291			return $this;
292			}
293
294			$this->loaded = true;
295
296			if (empty($this->data) \|\| !is_array($this->data)) {
297			if ($this->autoload && $autoload) {
298			//Only for non partial selections (excluded already selected)
299			$this->data = $this->loadRelated();
300			} else {
301			$this->data = [];
302			}
303			}
304
305			return $this->initInstances();
306			}
307
308			/**
309			* Fetch data from database. Lazy load.
310			*
311			* @return array
312			*/
313			protected function loadRelated(): array
314			{
315			$innerKey = $this->parent->getField($this->key(Record::INNER_KEY));
316			if (!empty($innerKey)) {
317			return $this->createSelector($innerKey)->fetchData();
318			}
319
320			return [];
321			}
322
323			/**
324			* Create outer selector for a given inner key value.
325			*
326			* @param mixed $innerKey
327			*
328			* @return RecordSelector
329			*/
330			protected function createSelector($innerKey): RecordSelector
331			{
332			$selector = $this->orm->selector($this->class)->where(
333			$this->key(Record::OUTER_KEY),
334			$innerKey
			0 ignored issues – show Unused Code introduced 2017-01-20 13:15 UTC by Report Bug Copy Issue Report The call to `RecordSelector::where()` has too many arguments starting with `$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...
335			);
336
337			if (!empty($this->schema[Record::WHERE])) {
338			//Configuring where conditions with alias resolution
339			$decorator = new WhereDecorator($selector, 'where', $selector->getAlias());
340			$decorator->where($this->schema[Record::WHERE]);
341
342			return $selector;
343			}
344
345			return $selector;
346			}
347
348			/**
349			* Init pre-loaded data.
350			*
351			* @return HasManyRelation
352			*/
353			private function initInstances(): self
354			{
355			if (is_array($this->data) && !empty($this->data)) {
356			//Iterates and instantiate records
357			$iterator = new RecordIterator($this->data, $this->class, $this->orm);
358
359			foreach ($iterator as $item) {
360			if ($this->has($item)) {
361			//Skip duplicates
362			continue;
363			}
364
365			$this->instances[] = $item;
366			}
367			}
368
369			//Memory free
370			$this->data = null;
371
372			return $this;
373			}
374
375			/**
376			* @param ContextualCommandInterface $parentCommand
377			* @param RecordInterface $instance
378			*
379			* @return CommandInterface
380			*/
381			private function queueRelated(
382			ContextualCommandInterface $parentCommand,
383			RecordInterface $instance
384			): CommandInterface {
385			//Related entity store command
386			$innerCommand = $instance->queueStore(true);
387
388			if (!$this->isSynced($this->parent, $instance)) {
389			//Delayed linking
390			$parentCommand->onExecute(function ($outerCommand) use ($innerCommand) {
391			$innerCommand->addContext(
392			$this->key(Record::OUTER_KEY),
393			$this->lookupKey(Record::INNER_KEY, $this->parent, $outerCommand)
394			);
395			});
396			}
397
398			return $innerCommand;
399			}
400			}

spiral / components

Branch — feature/pre-split (c69968)

HasManyRelation::loadData() B

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