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<?php declare(strict_types=1); |
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namespace Stratadox\Hydration\Mapping\Transform; |
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use Stratadox\Hydration\Mapping\AssertKey; |
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use Stratadox\HydrationMapping\Mapping; |
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use Stratadox\HydrationMapping\MappingFailure; |
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use function is_array; |
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use function json_decode; |
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use function json_last_error; |
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use function json_last_error_msg; |
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use const JSON_ERROR_NONE; |
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final class JsonTransform implements Mapping |
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{ |
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/** @var string */ |
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private $key; |
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/** @var Mapping */ |
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private $mapping; |
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private function __construct(string $key, Mapping $mapping) |
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{ |
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$this->key = $key; |
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$this->mapping = $mapping; |
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} |
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public static function fromKey(string $key, Mapping $mapping): Mapping |
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{ |
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return new self($key, $mapping); |
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} |
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public function name(): string |
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{ |
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return $this->mapping->name(); |
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} |
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public function value(array $data, $owner = null) |
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{ |
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AssertKey::exists($this, $data, $this->key); |
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return $this->mapping->value($this->decode($data[$this->key]), $owner); |
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} |
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/** @throws MappingFailure */ |
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private function decode(string $json): array |
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{ |
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$value = json_decode($json, true); |
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if (is_array($value)) { |
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return $value; |
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} |
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if (json_last_error() !== JSON_ERROR_NONE) { |
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throw JsonTransformationFailure::detected( |
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json_last_error_msg(), |
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$this->key, |
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$this->name() |
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); |
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} |
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throw JsonTransformationFailure::cannotBeScalar( |
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$value, |
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$this->key, |
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$this->name() |
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); |
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} |
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} |
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Stratadox /
HydrationMapping
