ManyToManyRelation::__construct() - Code Metrics - spiral/orm - Measure and Improve Code Quality continuously with Scrutinizer

ManyToManyRelation::__construct() A
last analyzed 2018-08-29 15:23 UTC

↳ Parent: ManyToManyRelation

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	6
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	4

<?php
/**
 * Spiral, Core Components
 *
 * @author Wolfy-J
 */

namespace Spiral\ORM\Entities\Relations;

use Spiral\Database\Builders\SelectQuery;
use Spiral\Database\Entities\Table;
use Spiral\ORM\CommandInterface;
use Spiral\ORM\Commands\ContextualDeleteCommand;
use Spiral\ORM\Commands\InsertCommand;
use Spiral\ORM\Commands\TransactionalCommand;
use Spiral\ORM\Commands\UpdateCommand;
use Spiral\ORM\ContextualCommandInterface;
use Spiral\ORM\Entities\Loaders\ManyToManyLoader;
use Spiral\ORM\Entities\Loaders\RelationLoader;
use Spiral\ORM\Entities\Nodes\PivotedRootNode;
use Spiral\ORM\Entities\RecordIterator;
use Spiral\ORM\Entities\Relations\Traits\LookupTrait;
use Spiral\ORM\Exceptions\RelationException;
use Spiral\ORM\Helpers\AliasDecorator;
use Spiral\ORM\ORMInterface;
use Spiral\ORM\Record;
use Spiral\ORM\RecordInterface;

/**
 * Provides ability to create pivot map between parent record and multiple objects with ability to
 * link them, link and create, update pivot, unlink or sync send. Relation support partial mode.
 */
class ManyToManyRelation extends MultipleRelation implements \IteratorAggregate, \Countable
{
    use LookupTrait;

    /**
     * @var Table|null
     */
    private $pivotTable = null;

    /**
     * @var \SplObjectStorage
     */
    private $pivotData;

    /**
     * Linked but not saved yet records.
     *
     * @var array
     */
    private $scheduled = [];

    /**
     * Record which pivot data was updated, record must still present in linked array.
     *
     * @var array
     */
    private $updated = [];

    /**
     * Records scheduled to be de-associated.
     *
     * @var RecordInterface[]
     */
    private $unlinked = [];

    /**
     * When target role is null parent role to be used. Redefine this variable to revert behaviour
     * of ManyToMany relation.
     *
     * @see ManyToMorphedRelation
     * @var string|null
     */
    private $targetRole = null;

    /**
     * @param string                   $class
     * @param array                    $schema
     * @param \Spiral\ORM\ORMInterface $orm
     * @param string|null              $targetRole
     */
    public function __construct($class, array $schema, ORMInterface $orm, string $targetRole = null)
    {
        parent::__construct($class, $schema, $orm);
        $this->pivotData = new \SplObjectStorage();
        $this->targetRole = $targetRole;
    }

    /**
     * {@inheritdoc}
     *
     * Pivot data must be set separatelly.
     */
    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");
        }

        //Do not add items twice
        $matched = [];
        foreach ($value as $index => $record) {
            if (is_null($record)) {
                unset($value[$index]);
                continue;
            }

            $this->assertValid($record);
            if (!empty($instance = $this->matchOne($record))) {
                $matched[] = $instance;
                unset($value[$index]);
            }
        }

        //Unlink records
        foreach (array_diff($this->instances, $matched) as $record) {
            $this->unlink($record);
        }

        //Add new record
        foreach ($value as $record) {
            $this->link($record);
        }
    }

    /**
     * Get all unlinked records.
     *
     * @return \ArrayIterator
     */
    public function getUnlinked()
    {
        return new \ArrayIterator($this->unlinked);
    }

    /**
     * Get pivot data associated with specific instance.
     *
     * @param RecordInterface $record
     *
     * @return array
     */
    public function getPivot(RecordInterface $record): array
    {
        if (empty($matched = $this->matchOne($record))) {
            return [];
        }

        return $this->pivotData->offsetGet($matched);
    }

    /**
     * Link record with parent entity. Only record instances is accepted.
     *
     * Attention, attached instances MIGHT be de-referenced IF parent object was reselected in a
     * different scope.
     *
     * @param RecordInterface $record
     * @param array           $pivotData
     *
     * @return self
     *
     * @throws RelationException
     */
    public function link(RecordInterface $record, array $pivotData = []): self
    {
        $this->loadData(true);
        $this->assertValid($record);
        $this->assertPivot($pivotData);

        //Ensure reference
        $record = $this->matchOne($record) ?? $record;

        if (in_array($record, $this->instances)) {
            //Merging pivot data
            $this->pivotData->offsetSet($record, $pivotData + $this->getPivot($record));

            if (!in_array($record, $this->updated) && !in_array($record, $this->scheduled)) {
                //Indicating that record pivot data has been changed
                $this->updated[] = $record;
            }

            return $this;
        }

        //New association
        $this->instances[] = $record;
        $this->scheduled[] = $record;
        $this->pivotData->offsetSet($record, $pivotData);

        return $this;
    }

    /**
     * Unlink specific entity from relation. Will load relation data! Record to delete will be
     * automatically matched to a give record.
     *
     * @param RecordInterface $record
     *
     * @return self
     *
     * @throws RelationException When entity not linked.
     */
    public function unlink(RecordInterface $record): self
    {
        $this->loadData(true);

        //Ensure reference
        $record = $this->matchOne($record) ?? $record;

        foreach ($this->instances as $index => $linked) {
            if ($this->match($linked, $record)) {
                //Removing locally
                unset($this->instances[$index]);

                if (!in_array($linked, $this->scheduled) || !$this->autoload) {
                    //Scheduling unlink in db when we know relation OR partial mode is on
                    $this->unlinked[] = $linked;
                }
                break;
            }
        }

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

        return $this;
    }

    /**
     * {@inheritdoc}
     */
    public function queueCommands(ContextualCommandInterface $parentCommand): CommandInterface
    {
        $transaction = new TransactionalCommand();

        foreach ($this->unlinked as $record) {
            //Leading command
            $transaction->addCommand($recordCommand = $record->queueStore(), true);

            //Delete link
            $command = new ContextualDeleteCommand($this->pivotTable(), [
                $this->key(Record::THOUGHT_INNER_KEY) => null,
                $this->key(Record::THOUGHT_OUTER_KEY) => null,
            ]);

            //Make sure command is properly configured with conditions OR create promises
            $command = $this->ensureContext(
                $command,
                $this->parent,
                $parentCommand,
                $record,
                $recordCommand
            );

            $transaction->addCommand($command);
        }

        foreach ($this->instances as $record) {
            //Leading command
            $transaction->addCommand($recordCommand = $record->queueStore(), true);

            //Create or refresh link between records
            if (in_array($record, $this->scheduled)) {
                //Create link
                $command = new InsertCommand(
                    $this->pivotTable(),
                    $this->pivotData->offsetGet($record)
                );
            } elseif (in_array($record, $this->updated)) {
                //Update link (expecting both records to be already loaded)
                $command = new UpdateCommand(
                    $this->pivotTable(),
                    [
                        $this->key(Record::THOUGHT_INNER_KEY) => $this->lookupKey(
                            Record::INNER_KEY,
                            $this->parent
                        ),
                        $this->key(Record::THOUGHT_OUTER_KEY) => $this->lookupKey(
                            Record::OUTER_KEY,
                            $record
                        ),
                    ],
                    $this->pivotData->offsetGet($record)
                );
            } else {
                //Nothing to do
                continue;
            }

            //Syncing pivot data values
            $command->onComplete(function (ContextualCommandInterface $command) use ($record) {
                //Now when we are done we can sync our values with current data
                $this->pivotData->offsetSet(
                    $record,
                    $command->getContext() + $this->getPivot($record)
                );
            });

            //Make sure command is properly configured with conditions OR create promises
            $command = $this->ensureContext(
                $command,
                $this->parent,
                $parentCommand,
                $record,
                $recordCommand
            );

            $transaction->addCommand($command);
        }

        $this->scheduled = [];
        $this->unlinked = [];
        $this->updated = [];

        return $transaction;
    }

    /**
     * Insane method used to properly set pivot command context (where or insert statement) based on
     * parent and outer records AND/OR based on command promises.
     *
     * @param ContextualCommandInterface $pivotCommand
     * @param RecordInterface            $parent
     * @param ContextualCommandInterface $parentCommand
     * @param RecordInterface            $outer
     * @param ContextualCommandInterface $outerCommand
     *
     * @return ContextualCommandInterface
     */
    protected function ensureContext(
        ContextualCommandInterface $pivotCommand,
        RecordInterface $parent,
        ContextualCommandInterface $parentCommand,
        RecordInterface $outer,
        ContextualCommandInterface $outerCommand
    ) {
        //Parent record dependency
        $parentCommand->onExecute(function ($parentCommand) use ($pivotCommand, $parent) {
            $pivotCommand->addContext(
                $this->key(Record::THOUGHT_INNER_KEY),
                $this->lookupKey(Record::INNER_KEY, $parent, $parentCommand)
            );
        });

        //Outer record dependency
        $outerCommand->onExecute(function ($outerCommand) use ($pivotCommand, $outer) {
            $pivotCommand->addContext(
                $this->key(Record::THOUGHT_OUTER_KEY),
                $this->lookupKey(Record::OUTER_KEY, $outer, $outerCommand)
            );
        });

        if (!empty($this->key(Record::MORPH_KEY))) {
            $pivotCommand->addContext($this->key(Record::MORPH_KEY), $this->targetRole());
        }

        return $pivotCommand;
    }

    /**
     * Fetch data from database. Lazy load. Method require a bit of love.
     *
     * @return array
     */
    protected function loadRelated(): array
    {
        $innerKey = $this->parent->getField($this->key(Record::INNER_KEY));
        if (empty($innerKey)) {
            return [];
        }

        //Work with pre-build query
        $query = $this->createQuery($innerKey);

        //Use custom node to parse data
        $node = new PivotedRootNode(
            $this->schema[Record::RELATION_COLUMNS],
            $this->schema[Record::PIVOT_COLUMNS],
            $this->schema[Record::OUTER_KEY],
            $this->schema[Record::THOUGHT_INNER_KEY],
            $this->schema[Record::THOUGHT_OUTER_KEY]
        );

        $iterator = $query->getIterator();
        foreach ($iterator as $row) {
            //Time to parse some data
            $node->parseRow(0, $row);
        }

        //Memory free
        $iterator->close();

        return $node->getResult();
    }

    /**
     * Create query for lazy loading.
     *
     * @param mixed $innerKey
     *
     * @return SelectQuery
     */
    protected function createQuery($innerKey): SelectQuery
    {
        $table = $this->orm->table($this->class);
        $query = $table->select();

        //Loader will take care of query configuration
        $loader = new ManyToManyLoader(
            $this->class,
            $table->getName(),
            $this->schema,
            $this->orm,
            $this->targetRole()
        );

        //This is root loader, we can do self-alias (THIS IS SAFE due loader in POSTLOAD mode)
        $loader = $loader->withContext(
            $loader,
            [
                'alias'      => $table->getName(),
                'pivotAlias' => $table->getName() . '_pivot',
                'method'     => RelationLoader::POSTLOAD
            ]
        );

        //Configuring query using parent inner key value as reference
        /** @var ManyToManyLoader $loader */
        $query = $loader->configureQuery($query, true, [$innerKey]);

        //Additional pivot conditions
        $pivotDecorator = new AliasDecorator($query, 'onWhere', $table->getName() . '_pivot');
        $pivotDecorator->where($this->schema[Record::WHERE_PIVOT]);

        $decorator = new AliasDecorator($query, 'where', 'root');

        //Additional where conditions!
        if (!empty($this->schema[Record::WHERE])) {
            $decorator->where($this->schema[Record::WHERE]);
        }

        if (!empty($this->schema[Record::ORDER_BY])) {
            //Sorting
            $decorator->orderBy((array)$this->schema[Record::ORDER_BY]);
        }

        return $query;
    }

    /**
     * Init relations and populate pivot map.
     *
     * @return self|MultipleRelation
     */
    protected function initInstances(): MultipleRelation
    {
        if (is_array($this->data) && !empty($this->data)) {
            //Iterates and instantiate records
            $iterator = new RecordIterator($this->data, $this->class, $this->orm);

            foreach ($iterator as $pivotData => $item) {
                if (in_array($item, $this->instances)) {
                    //Skip duplicates (if any?)

                    continue;
                }

                $this->pivotData->attach($item, $pivotData);
                $this->instances[] = $item;
            }
        }

        //Memory free
        $this->data = [];

        return $this;
    }

    /**
     * @return Table
     */
    private function pivotTable()
    {
        if (empty($this->pivotTable)) {
            $this->pivotTable = $this->orm->database(
                $this->schema[Record::PIVOT_DATABASE]
            )->table(
                $this->schema[Record::PIVOT_TABLE]
            );
        }

        return $this->pivotTable;
    }

    /**
     * Make sure that pivot data in a valid format.
     *
     * @param array $pivotData
     *
     * @throws RelationException
     */
    private function assertPivot(array $pivotData)
    {
        if ($diff = array_diff(array_keys($pivotData), $this->schema[Record::PIVOT_COLUMNS])) {
            throw new RelationException(
                "Invalid pivot data, undefined columns found: " . join(', ', $diff)
            );
        }
    }

    /**
     * Defined role to be used in morphed relations.
     *
     * @return string
     */
    private function targetRole(): string
    {
        return $this->targetRole ?? $this->orm->define(
                get_class($this->parent),
                ORMInterface::R_ROLE_NAME
            );
    }
}

1			<?php
2			/**
3			* Spiral, Core Components
4			*
5			* @author Wolfy-J
6			*/
7
8			namespace Spiral\ORM\Entities\Relations;
9
10			use Spiral\Database\Builders\SelectQuery;
11			use Spiral\Database\Entities\Table;
12			use Spiral\ORM\CommandInterface;
13			use Spiral\ORM\Commands\ContextualDeleteCommand;
14			use Spiral\ORM\Commands\InsertCommand;
15			use Spiral\ORM\Commands\TransactionalCommand;
16			use Spiral\ORM\Commands\UpdateCommand;
17			use Spiral\ORM\ContextualCommandInterface;
18			use Spiral\ORM\Entities\Loaders\ManyToManyLoader;
19			use Spiral\ORM\Entities\Loaders\RelationLoader;
20			use Spiral\ORM\Entities\Nodes\PivotedRootNode;
21			use Spiral\ORM\Entities\RecordIterator;
22			use Spiral\ORM\Entities\Relations\Traits\LookupTrait;
23			use Spiral\ORM\Exceptions\RelationException;
24			use Spiral\ORM\Helpers\AliasDecorator;
25			use Spiral\ORM\ORMInterface;
26			use Spiral\ORM\Record;
27			use Spiral\ORM\RecordInterface;
28
29			/**
30			* Provides ability to create pivot map between parent record and multiple objects with ability to
31			* link them, link and create, update pivot, unlink or sync send. Relation support partial mode.
32			*/
33			class ManyToManyRelation extends MultipleRelation implements \IteratorAggregate, \Countable
34			{
35			use LookupTrait;
36
37			/**
38			* @var Table\|null
39			*/
40			private $pivotTable = null;
41
42			/**
43			* @var \SplObjectStorage
44			*/
45			private $pivotData;
46
47			/**
48			* Linked but not saved yet records.
49			*
50			* @var array
51			*/
52			private $scheduled = [];
53
54			/**
55			* Record which pivot data was updated, record must still present in linked array.
56			*
57			* @var array
58			*/
59			private $updated = [];
60
61			/**
62			* Records scheduled to be de-associated.
63			*
64			* @var RecordInterface[]
65			*/
66			private $unlinked = [];
67
68			/**
69			* When target role is null parent role to be used. Redefine this variable to revert behaviour
70			* of ManyToMany relation.
71			*
72			* @see ManyToMorphedRelation
73			* @var string\|null
74			*/
75			private $targetRole = null;
76
77			/**
78			* @param string $class
79			* @param array $schema
80			* @param \Spiral\ORM\ORMInterface $orm
81			* @param string\|null $targetRole
82			*/
83			public function __construct($class, array $schema, ORMInterface $orm, string $targetRole = null)
84			{
85			parent::__construct($class, $schema, $orm);
86			$this->pivotData = new \SplObjectStorage();
87			$this->targetRole = $targetRole;
88			}
89
90			/**
91			* {@inheritdoc}
92			*
93			* Pivot data must be set separatelly.
94			*/
95			public function setRelated($value)
96			{
97			$this->loadData(true);
98
99			if (is_null($value)) {
100			$value = [];
101			}
102
103			if (!is_array($value)) {
104			throw new RelationException("HasMany relation can only be set with array of entities");
105			}
106
107			//Do not add items twice
108			$matched = [];
109			foreach ($value as $index => $record) {
110			if (is_null($record)) {
111			unset($value[$index]);
112			continue;
113			}
114
115			$this->assertValid($record);
116			if (!empty($instance = $this->matchOne($record))) {
117			$matched[] = $instance;
118			unset($value[$index]);
119			}
120			}
121
122			//Unlink records
123			foreach (array_diff($this->instances, $matched) as $record) {
124			$this->unlink($record);
125			}
126
127			//Add new record
128			foreach ($value as $record) {
129			$this->link($record);
130			}
131			}
132
133			/**
134			* Get all unlinked records.
135			*
136			* @return \ArrayIterator
137			*/
138			public function getUnlinked()
139			{
140			return new \ArrayIterator($this->unlinked);
141			}
142
143			/**
144			* Get pivot data associated with specific instance.
145			*
146			* @param RecordInterface $record
147			*
148			* @return array
149			*/
150			public function getPivot(RecordInterface $record): array
151			{
152			if (empty($matched = $this->matchOne($record))) {
153			return [];
154			}
155
156			return $this->pivotData->offsetGet($matched);
157			}
158
159			/**
160			* Link record with parent entity. Only record instances is accepted.
161			*
162			* Attention, attached instances MIGHT be de-referenced IF parent object was reselected in a
163			* different scope.
164			*
165			* @param RecordInterface $record
166			* @param array $pivotData
167			*
168			* @return self
169			*
170			* @throws RelationException
171			*/
172			public function link(RecordInterface $record, array $pivotData = []): self
173			{
174			$this->loadData(true);
175			$this->assertValid($record);
176			$this->assertPivot($pivotData);
177
178			//Ensure reference
179			$record = $this->matchOne($record) ?? $record;
180
181			if (in_array($record, $this->instances)) {
182			//Merging pivot data
183			$this->pivotData->offsetSet($record, $pivotData + $this->getPivot($record));
184
185			if (!in_array($record, $this->updated) && !in_array($record, $this->scheduled)) {
186			//Indicating that record pivot data has been changed
187			$this->updated[] = $record;
188			}
189
190			return $this;
191			}
192
193			//New association
194			$this->instances[] = $record;
195			$this->scheduled[] = $record;
196			$this->pivotData->offsetSet($record, $pivotData);
197
198			return $this;
199			}
200
201			/**
202			* Unlink specific entity from relation. Will load relation data! Record to delete will be
203			* automatically matched to a give record.
204			*
205			* @param RecordInterface $record
206			*
207			* @return self
208			*
209			* @throws RelationException When entity not linked.
210			*/
211			public function unlink(RecordInterface $record): self
212			{
213			$this->loadData(true);
214
215			//Ensure reference
216			$record = $this->matchOne($record) ?? $record;
217
218			foreach ($this->instances as $index => $linked) {
219			if ($this->match($linked, $record)) {
220			//Removing locally
221			unset($this->instances[$index]);
222
223			if (!in_array($linked, $this->scheduled) \|\| !$this->autoload) {
224			//Scheduling unlink in db when we know relation OR partial mode is on
225			$this->unlinked[] = $linked;
226			}
227			break;
228			}
229			}
230
231			$this->instances = array_values($this->instances);
232
233			return $this;
234			}
235
236			/**
237			* {@inheritdoc}
238			*/
239			public function queueCommands(ContextualCommandInterface $parentCommand): CommandInterface
240			{
241			$transaction = new TransactionalCommand();
242
243			foreach ($this->unlinked as $record) {
244			//Leading command
245			$transaction->addCommand($recordCommand = $record->queueStore(), true);
246
247			//Delete link
248			$command = new ContextualDeleteCommand($this->pivotTable(), [
249			$this->key(Record::THOUGHT_INNER_KEY) => null,
250			$this->key(Record::THOUGHT_OUTER_KEY) => null,
251			]);
252
253			//Make sure command is properly configured with conditions OR create promises
254			$command = $this->ensureContext(
255			$command,
256			$this->parent,
257			$parentCommand,
258			$record,
259			$recordCommand
260			);
261
262			$transaction->addCommand($command);
263			}
264
265			foreach ($this->instances as $record) {
266			//Leading command
267			$transaction->addCommand($recordCommand = $record->queueStore(), true);
268
269			//Create or refresh link between records
270			if (in_array($record, $this->scheduled)) {
271			//Create link
272			$command = new InsertCommand(
273			$this->pivotTable(),
274			$this->pivotData->offsetGet($record)
275			);
276			} elseif (in_array($record, $this->updated)) {
277			//Update link (expecting both records to be already loaded)
278			$command = new UpdateCommand(
279			$this->pivotTable(),
280			[
281			$this->key(Record::THOUGHT_INNER_KEY) => $this->lookupKey(
282			Record::INNER_KEY,
283			$this->parent
284			),
285			$this->key(Record::THOUGHT_OUTER_KEY) => $this->lookupKey(
286			Record::OUTER_KEY,
287			$record
288			),
289			],
290			$this->pivotData->offsetGet($record)
291			);
292			} else {
293			//Nothing to do
294			continue;
295			}
296
297			//Syncing pivot data values
298			$command->onComplete(function (ContextualCommandInterface $command) use ($record) {
299			//Now when we are done we can sync our values with current data
300			$this->pivotData->offsetSet(
301			$record,
302			$command->getContext() + $this->getPivot($record)
303			);
304			});
305
306			//Make sure command is properly configured with conditions OR create promises
307			$command = $this->ensureContext(
308			$command,
309			$this->parent,
310			$parentCommand,
311			$record,
312			$recordCommand
313			);
314
315			$transaction->addCommand($command);
316			}
317
318			$this->scheduled = [];
319			$this->unlinked = [];
320			$this->updated = [];
321
322			return $transaction;
323			}
324
325			/**
326			* Insane method used to properly set pivot command context (where or insert statement) based on
327			* parent and outer records AND/OR based on command promises.
328			*
329			* @param ContextualCommandInterface $pivotCommand
330			* @param RecordInterface $parent
331			* @param ContextualCommandInterface $parentCommand
332			* @param RecordInterface $outer
333			* @param ContextualCommandInterface $outerCommand
334			*
335			* @return ContextualCommandInterface
336			*/
337			protected function ensureContext(
338			ContextualCommandInterface $pivotCommand,
339			RecordInterface $parent,
340			ContextualCommandInterface $parentCommand,
341			RecordInterface $outer,
342			ContextualCommandInterface $outerCommand
343			) {
344			//Parent record dependency
345			$parentCommand->onExecute(function ($parentCommand) use ($pivotCommand, $parent) {
346			$pivotCommand->addContext(
347			$this->key(Record::THOUGHT_INNER_KEY),
348			$this->lookupKey(Record::INNER_KEY, $parent, $parentCommand)
349			);
350			});
351
352			//Outer record dependency
353			$outerCommand->onExecute(function ($outerCommand) use ($pivotCommand, $outer) {
354			$pivotCommand->addContext(
355			$this->key(Record::THOUGHT_OUTER_KEY),
356			$this->lookupKey(Record::OUTER_KEY, $outer, $outerCommand)
357			);
358			});
359
360			if (!empty($this->key(Record::MORPH_KEY))) {
361			$pivotCommand->addContext($this->key(Record::MORPH_KEY), $this->targetRole());
362			}
363
364			return $pivotCommand;
365			}
366
367			/**
368			* Fetch data from database. Lazy load. Method require a bit of love.
369			*
370			* @return array
371			*/
372			protected function loadRelated(): array
373			{
374			$innerKey = $this->parent->getField($this->key(Record::INNER_KEY));
375			if (empty($innerKey)) {
376			return [];
377			}
378
379			//Work with pre-build query
380			$query = $this->createQuery($innerKey);
381
382			//Use custom node to parse data
383			$node = new PivotedRootNode(
384			$this->schema[Record::RELATION_COLUMNS],
385			$this->schema[Record::PIVOT_COLUMNS],
386			$this->schema[Record::OUTER_KEY],
387			$this->schema[Record::THOUGHT_INNER_KEY],
388			$this->schema[Record::THOUGHT_OUTER_KEY]
389			);
390
391			$iterator = $query->getIterator();
392			foreach ($iterator as $row) {
393			//Time to parse some data
394			$node->parseRow(0, $row);
395			}
396
397			//Memory free
398			$iterator->close();
399
400			return $node->getResult();
401			}
402
403			/**
404			* Create query for lazy loading.
405			*
406			* @param mixed $innerKey
407			*
408			* @return SelectQuery
409			*/
410			protected function createQuery($innerKey): SelectQuery
411			{
412			$table = $this->orm->table($this->class);
413			$query = $table->select();
414
415			//Loader will take care of query configuration
416			$loader = new ManyToManyLoader(
417			$this->class,
418			$table->getName(),
419			$this->schema,
420			$this->orm,
421			$this->targetRole()
422			);
423
424			//This is root loader, we can do self-alias (THIS IS SAFE due loader in POSTLOAD mode)
425			$loader = $loader->withContext(
426			$loader,
427			[
428			'alias' => $table->getName(),
429			'pivotAlias' => $table->getName() . '_pivot',
430			'method' => RelationLoader::POSTLOAD
431			]
432			);
433
434			//Configuring query using parent inner key value as reference
435			/** @var ManyToManyLoader $loader */
436			$query = $loader->configureQuery($query, true, [$innerKey]);
437
438			//Additional pivot conditions
439			$pivotDecorator = new AliasDecorator($query, 'onWhere', $table->getName() . '_pivot');
440			$pivotDecorator->where($this->schema[Record::WHERE_PIVOT]);
441
442			$decorator = new AliasDecorator($query, 'where', 'root');
443
444			//Additional where conditions!
445			if (!empty($this->schema[Record::WHERE])) {
446			$decorator->where($this->schema[Record::WHERE]);
447			}
448
449			if (!empty($this->schema[Record::ORDER_BY])) {
450			//Sorting
451			$decorator->orderBy((array)$this->schema[Record::ORDER_BY]);
452			}
453
454			return $query;
455			}
456
457			/**
458			* Init relations and populate pivot map.
459			*
460			* @return self\|MultipleRelation
461			*/
462			protected function initInstances(): MultipleRelation
463			{
464			if (is_array($this->data) && !empty($this->data)) {
465			//Iterates and instantiate records
466			$iterator = new RecordIterator($this->data, $this->class, $this->orm);
467
468			foreach ($iterator as $pivotData => $item) {
469			if (in_array($item, $this->instances)) {
470			//Skip duplicates (if any?)
			0 ignored issues – show Unused Code Comprehensibility introduced 2017-02-03 17:29 UTC by Report Bug Copy Issue Report `40%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
471			continue;
472			}
473
474			$this->pivotData->attach($item, $pivotData);
475			$this->instances[] = $item;
476			}
477			}
478
479			//Memory free
480			$this->data = [];
481
482			return $this;
483			}
484
485			/**
486			* @return Table
487			*/
488			private function pivotTable()
489			{
490			if (empty($this->pivotTable)) {
491			$this->pivotTable = $this->orm->database(
492			$this->schema[Record::PIVOT_DATABASE]
493			)->table(
494			$this->schema[Record::PIVOT_TABLE]
495			);
496			}
497
498			return $this->pivotTable;
499			}
500
501			/**
502			* Make sure that pivot data in a valid format.
503			*
504			* @param array $pivotData
505			*
506			* @throws RelationException
507			*/
508			private function assertPivot(array $pivotData)
509			{
510			if ($diff = array_diff(array_keys($pivotData), $this->schema[Record::PIVOT_COLUMNS])) {
511			throw new RelationException(
512			"Invalid pivot data, undefined columns found: " . join(', ', $diff)
513			);
514			}
515			}
516
517			/**
518			* Defined role to be used in morphed relations.
519			*
520			* @return string
521			*/
522			private function targetRole(): string
523			{
524			return $this->targetRole ?? $this->orm->define(
525			get_class($this->parent),
526			ORMInterface::R_ROLE_NAME
527			);
528			}
529			}

spiral / orm

ManyToManyRelation::__construct() A last analyzed 2018-08-29 15:23 UTC

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ManyToManyRelation::__construct() A
last analyzed 2018-08-29 15:23 UTC