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<?php |
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declare(strict_types=1); |
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namespace Cycle\Schema\Definition\Map; |
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use Cycle\Schema\Definition\ForeignKey; |
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/** |
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* Manage the set of foreign keys associated with the entity. |
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* |
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* @implements \IteratorAggregate<non-empty-string, ForeignKey> |
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*/ |
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final class ForeignKeyMap implements \IteratorAggregate, \Countable |
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{ |
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/** |
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* @var array<non-empty-string, ForeignKey> |
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*/ |
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private array $foreignKeys = []; |
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/** |
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* Cloning. |
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*/ |
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public function __clone() |
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{ |
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foreach ($this->foreignKeys as $index => $foreignKey) { |
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$this->foreignKeys[$index] = clone $foreignKey; |
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} |
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} |
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public function has(ForeignKey $foreignKey): bool |
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{ |
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return isset($this->foreignKeys[$this->generateIdentifier($foreignKey)]); |
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} |
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public function set(ForeignKey $foreignKey): self |
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{ |
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$this->foreignKeys[$this->generateIdentifier($foreignKey)] = $foreignKey; |
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return $this; |
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} |
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public function remove(ForeignKey $foreignKey): self |
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{ |
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unset($this->foreignKeys[$this->generateIdentifier($foreignKey)]); |
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return $this; |
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} |
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public function count(): int |
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{ |
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return \count($this->foreignKeys); |
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} |
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public function getIterator(): \Traversable |
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{ |
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return new \ArrayIterator($this->foreignKeys); |
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} |
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/** |
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* @return non-empty-string |
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*/ |
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private function generateIdentifier(ForeignKey $foreignKey): string |
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{ |
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return \sprintf( |
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'%s:%s:%s', |
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$foreignKey->getTable(), |
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\implode(',', $foreignKey->getInnerColumns()), |
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\implode(',', $foreignKey->getOuterColumns()) |
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); |
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} |
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} |
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cycle /
schema-builder
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