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<?php |
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/** |
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* Cycle ORM Schema Builder. |
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* |
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* @license MIT |
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* @author Anton Titov (Wolfy-J) |
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*/ |
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declare(strict_types=1); |
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namespace Cycle\Schema\Relation; |
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use Cycle\ORM\Relation; |
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use Cycle\Schema\Definition\Entity; |
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use Cycle\Schema\Exception\RegistryException; |
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use Cycle\Schema\Registry; |
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use Cycle\Schema\RelationInterface; |
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/** |
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* Defines relation options, renders needed columns and other options. |
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*/ |
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abstract class RelationSchema implements RelationInterface |
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{ |
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// relation rendering options |
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public const INDEX_CREATE = 1001; |
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public const FK_CREATE = 1002; |
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public const FK_ACTION = 1003; |
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public const INVERSE = 1005; |
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public const MORPH_KEY_LENGTH = 1009; |
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// options to be excluded from generated schema (helpers) |
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protected const EXCLUDE = [self::FK_CREATE, self::FK_ACTION, self::INDEX_CREATE]; |
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// exported relation type |
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protected const RELATION_TYPE = null; |
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// name of all required relation options |
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protected const RELATION_SCHEMA = []; |
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/** @var string */ |
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protected $source; |
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/** @var string */ |
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protected $target; |
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/** @var OptionSchema */ |
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protected $options; |
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/** |
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* @inheritdoc |
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*/ |
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public function withContext(string $name, string $source, string $target, OptionSchema $options): RelationInterface |
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{ |
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$relation = clone $this; |
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$relation->source = $source; |
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$relation->target = $target; |
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$relation->options = $options->withTemplate(static::RELATION_SCHEMA)->withContext([ |
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'relation' => $name, |
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'source:role' => $source, |
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'target:role' => $target, |
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]); |
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return $relation; |
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} |
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/** |
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* @param Registry $registry |
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*/ |
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public function compute(Registry $registry) |
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{ |
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$this->options = $this->options->withContext([ |
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'source:primaryKey' => $this->getPrimary($registry->getEntity($this->source)) |
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]); |
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if ($registry->hasEntity($this->target)) { |
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$this->options = $this->options->withContext([ |
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'target:primaryKey' => $this->getPrimary($registry->getEntity($this->target)) |
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]); |
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} |
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} |
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/** |
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* @return array |
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*/ |
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public function packSchema(): array |
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{ |
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$schema = []; |
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foreach (static::RELATION_SCHEMA as $option => $template) { |
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if (in_array($option, static::EXCLUDE)) { |
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continue; |
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} |
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$schema[$option] = $this->options->get($option); |
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} |
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return [ |
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Relation::TYPE => static::RELATION_TYPE, |
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Relation::TARGET => $this->target, |
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Relation::LOAD => $this->getLoadMethod(), |
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Relation::SCHEMA => $schema |
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]; |
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} |
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/** |
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* @return int|null |
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*/ |
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protected function getLoadMethod(): ?int |
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{ |
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switch ($this->options->getOption('load')) { |
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case 'eager': |
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return Relation::LOAD_EAGER; |
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case 'promise': |
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case 'lazy': |
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return Relation::LOAD_PROMISE; |
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default: |
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return null; |
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} |
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} |
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/** |
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* @return OptionSchema |
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*/ |
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protected function getOptions(): OptionSchema |
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{ |
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return $this->options; |
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} |
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/** |
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* @param Entity $entity |
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* @return string |
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* |
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* @throws RegistryException |
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*/ |
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protected function getPrimary(Entity $entity): string |
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{ |
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foreach ($entity->getFields() as $name => $field) { |
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if ($field->isPrimary()) { |
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return $name; |
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} |
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} |
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throw new RegistryException("Entity `{$entity->getRole()}` must have defined primary key"); |
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} |
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} |
cycle /
schema-builder
