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<?php |
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declare(strict_types=1); |
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namespace ReadModel\Walker; |
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use ReadModel\InvalidArgumentException; |
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final class WalkerBuilder |
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{ |
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/** @var BinaryUuidTransformer */ |
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private $transformer; |
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/** @var ResultWalker[] */ |
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private $walkers = []; |
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/** @var callable[] */ |
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private $callables = []; |
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/** @var array */ |
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private $prefixes = []; |
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/** @var array */ |
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private $binaryKeys = []; |
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/** @var array */ |
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private $scalarMapping = []; |
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/** @var bool */ |
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private $camelCase = false; |
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public function __construct(BinaryUuidTransformer $transformer = null) |
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{ |
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$this->transformer = $transformer; |
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} |
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public function addWalker(ResultWalker $walker): self |
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{ |
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$this->walkers[] = $walker; |
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return $this; |
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} |
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/** |
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* Embed walker is added as the first walker. |
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*/ |
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public function withEmbedded(...$prefixes): self |
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{ |
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$this->prefixes = array_merge($this->prefixes, $prefixes); |
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return $this; |
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} |
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/** |
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* Callable walkers are added after embed walker. |
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*/ |
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public function with(callable $callable): self |
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{ |
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$this->callables[] = $callable; |
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return $this; |
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} |
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/** |
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* Binary casting is added after callable walkers. |
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*/ |
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public function withBinaryUuidCasting(...$keys): self |
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{ |
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if ($this->transformer === null) { |
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throw InvalidArgumentException::binaryUuidTransformerMustBeProvided(); |
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} |
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$this->binaryKeys = array_merge($this->binaryKeys, $keys); |
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return $this; |
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} |
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/** |
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* Scalar casting is added after binary casting walker. |
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*/ |
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public function withScalarCasting(array $mapping): self |
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{ |
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$this->scalarMapping = array_merge($this->scalarMapping, $mapping); |
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return $this; |
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} |
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/** |
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* Camel cased walker is added as the last walker. |
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*/ |
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public function withCamelCasedFieldNames(): self |
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{ |
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$this->camelCase = true; |
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return $this; |
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} |
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public function build(): ResultWalker |
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{ |
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if (!empty($this->prefixes)) { |
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$this->addWalker(new EmbedWalker(...$this->prefixes)); |
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} |
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foreach ($this->callables as $callable) { |
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$this->addWalker(new CallableWalker($callable)); |
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} |
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if (!empty($this->binaryKeys)) { |
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$this->addWalker(new BinaryUuidTransformerWalker($this->transformer, ...$this->binaryKeys)); |
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} |
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if (!empty($this->scalarMapping)) { |
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$this->addWalker(new ScalarTransformerWalker($this->scalarMapping)); |
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} |
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if ($this->camelCase) { |
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$this->addWalker(new KeysToCamelCaseWalker()); |
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} |
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$walker = new ChainWalker(...$this->walkers); |
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$this->clearBuilder(); |
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return $walker; |
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} |
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private function clearBuilder(): void |
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{ |
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$this->walkers = []; |
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$this->callables = []; |
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$this->prefixes = []; |
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$this->binaryKeys = []; |
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$this->scalarMapping = []; |
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$this->camelCase = false; |
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} |
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} |
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tomaszhanc /
cqrs-lite-read-model
