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<?php |
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/** |
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* components |
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* |
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* @author Wolfy-J |
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*/ |
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namespace Spiral\ORM\Entities\Relations; |
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use Spiral\ORM\Exceptions\RelationException; |
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use Spiral\ORM\ORMInterface; |
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use Spiral\ORM\Record; |
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use Spiral\ORM\RecordInterface; |
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use Spiral\ORM\RelationInterface; |
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abstract class AbstractRelation implements RelationInterface |
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{ |
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/** |
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* Indicates that relation commands must be executed prior to parent command. |
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*/ |
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const LEADING_RELATION = false; |
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/** |
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* Indication that relation have been loaded. |
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* |
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* @var bool |
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*/ |
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protected $loaded; |
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/** |
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* Parent record. Only read operations! |
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* |
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* @invisible |
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* @var RecordInterface |
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*/ |
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protected $parent; |
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/** |
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* Class name relation points to. |
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* |
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* @var string |
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*/ |
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protected $class; |
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/** |
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* Relation schema, defined when ORM being compiled. Check relation config to find out what |
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* schema producer been used for this relation accessor. |
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* |
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* @var array |
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*/ |
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protected $schema; |
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/** |
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* Related data. |
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* |
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* @invisible |
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* @var array|null |
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*/ |
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protected $data = null; |
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/** |
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* Provides ability for lazy-loading model initialization and inner selects. |
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* |
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* @invisible |
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* @var ORMInterface |
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*/ |
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protected $orm; |
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/** |
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* @param string $class Owner model class name. |
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* @param array $schema |
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* @param ORMInterface $orm |
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*/ |
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public function __construct(string $class, array $schema, ORMInterface $orm) |
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{ |
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$this->class = $class; |
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$this->schema = $schema; |
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$this->orm = $orm; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isLeading(): bool |
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{ |
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return static::LEADING_RELATION; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function withContext( |
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RecordInterface $parent, |
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bool $loaded = false, |
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array $data = null |
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): RelationInterface { |
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$relation = clone $this; |
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$relation->parent = $parent; |
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$relation->loaded = $loaded; |
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$relation->data = is_null($data) ? [] : $data; |
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return $relation; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getClass(): string |
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{ |
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return $this->class; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function isLoaded(): bool |
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{ |
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return $this->loaded; |
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} |
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/** |
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* Get value from record based on schema key. |
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* |
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* @param RecordInterface $record |
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* @param string $key |
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* |
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* @return mixed |
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*/ |
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protected function value(RecordInterface $record, string $key) |
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{ |
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return $record->getField($this->key($key)); |
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} |
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/** |
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* Schema value. |
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* |
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* @param int $key |
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* |
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* @return mixed |
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*/ |
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protected function key(int $key) |
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{ |
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return $this->schema[$key]; |
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} |
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/** |
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* Get primary key column |
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* |
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* @param RecordInterface $record |
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* |
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* @return string |
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*/ |
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protected function primaryColumnOf(RecordInterface $record): string |
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{ |
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return $this->orm->define(get_class($record), ORMInterface::R_PRIMARY_KEY); |
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} |
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/** |
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* @param $value |
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*/ |
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protected function assertValid($value) |
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{ |
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if (is_null($value)) { |
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if (!$this->schema[Record::NULLABLE]) { |
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throw new RelationException("Relation is not nullable"); |
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} |
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} elseif (!is_object($value)) { |
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throw new RelationException( |
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"Must be an instance of '{$this->class}', '" . gettype($value) . "' given" |
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); |
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} elseif (!is_a($value, $this->class, false)) { |
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throw new RelationException( |
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"Must be an instance of '{$this->class}', '" . get_class($value) . "' given" |
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); |
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} |
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} |
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/** |
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* If record not synced or can't be synced. Only work for PK based relations. |
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* |
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* @param RecordInterface $inner |
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* @param RecordInterface $outer |
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* |
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* @return bool |
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*/ |
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protected function isSynced(RecordInterface $inner, RecordInterface $outer): bool |
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{ |
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if (empty($outer->primaryKey())) { |
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//Parent not saved |
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return false; |
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} |
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//Comparing FK values |
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return $outer->getField( |
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$this->key(Record::OUTER_KEY) |
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) == $inner->getField( |
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$this->key(Record::INNER_KEY) |
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); |
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} |
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} |