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<?php declare(strict_types=1); |
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/** |
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* Spiral Framework. |
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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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namespace Cycle\Schema\Relation\Traits; |
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use Cycle\Schema\Definition\Entity; |
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use Cycle\Schema\Definition\Field; |
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use Cycle\Schema\Exception\RelationException; |
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use Cycle\Schema\Registry; |
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use Cycle\Schema\Table\ColumnSchema; |
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trait MorphTrait |
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{ |
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/** |
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* @param Registry $registry |
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* @param string $interface |
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* @return \Generator |
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*/ |
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protected function findTargets(Registry $registry, string $interface): \Generator |
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{ |
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foreach ($registry as $entity) { |
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$class = $entity->getClass(); |
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if ($class === null || !in_array($interface, class_implements($class))) { |
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continue; |
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} |
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yield $entity; |
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} |
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} |
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/** |
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* @param Registry $registry |
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* @param string $interface |
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* @return array Tuple [name, Field] |
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* |
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* @throws RelationException |
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*/ |
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protected function findOuterKey(Registry $registry, string $interface): array |
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{ |
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/** @var Field|null $field */ |
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$key = null; |
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$field = null; |
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foreach ($this->findTargets($registry, $interface) as $entity) { |
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$primaryKey = $this->getPrimary($entity); |
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$primaryField = $entity->getFields()->get($primaryKey); |
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if (is_null($field)) { |
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$key = $primaryKey; |
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$field = $primaryField; |
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} else { |
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if ($key != $primaryKey) { |
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throw new RelationException("Inconsistent primary key reference (name)"); |
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} |
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if ($field->getType() != $primaryField->getType()) { |
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throw new RelationException("Inconsistent primary key reference (type)"); |
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} |
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} |
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} |
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if (is_null($field)) { |
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throw new RelationException("Unable to find morphed parent"); |
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} |
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return [$key, $field]; |
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} |
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/** |
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* @param Entity $target |
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* @param string $name |
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* @param int $lenght |
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* @param bool $nullable |
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*/ |
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protected function ensureMorphField(Entity $target, string $name, int $lenght, bool $nullable = false) |
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{ |
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if ($target->getFields()->has($name)) { |
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// field already exists and defined by the user |
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return; |
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} |
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$field = new Field(); |
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$field->setColumn($name); |
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$field->setType(sprintf("string(%s)", $lenght)); |
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if ($nullable) { |
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$field->getOptions()->set(ColumnSchema::OPT_NULLABLE, true); |
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} |
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$target->getFields()->set($name, $field); |
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} |
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} |
cycle /
schema-builder
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