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<?php |
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namespace Oliverde8\Component\PhpEtl\ChainOperation\Transformer; |
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use oliverde8\AssociativeArraySimplified\AssociativeArray; |
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use Oliverde8\Component\PhpEtl\ChainOperation\AbstractChainOperation; |
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use Oliverde8\Component\PhpEtl\ChainOperation\DataChainOperationInterface; |
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use Oliverde8\Component\PhpEtl\Exception\ChainOperationException; |
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use Oliverde8\Component\PhpEtl\Item\ChainBreakItem; |
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use Oliverde8\Component\PhpEtl\Item\DataItem; |
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use Oliverde8\Component\PhpEtl\Item\DataItemInterface; |
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use Oliverde8\Component\PhpEtl\Item\ItemInterface; |
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use Oliverde8\Component\PhpEtl\Item\MixItem; |
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use Oliverde8\Component\PhpEtl\Model\ExecutionContext; |
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class SplitItemOperation extends AbstractChainOperation implements DataChainOperationInterface |
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{ |
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protected bool $singleElement; |
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protected array $keys; |
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/** |
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* @param bool $singleElement |
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* @param array $keys |
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*/ |
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public function __construct(bool $singleElement, array $keys) |
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{ |
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$this->singleElement = $singleElement; |
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$this->keys = $keys; |
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} |
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/** |
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* @throws ChainOperationException |
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*/ |
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public function processData(DataItemInterface $item, ExecutionContext $context): ItemInterface |
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{ |
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if ($this->singleElement) { |
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$data = AssociativeArray::getFromKey($item->getData(), $this->keys[0], new ChainBreakItem()); |
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if ($data instanceof ItemInterface) { |
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return $data; |
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} |
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return $this->createItem($data); |
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} |
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$newItemData = []; |
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foreach ($this->keys as $key) { |
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$newItemData[] = AssociativeArray::getFromKey($item->getData(), $key, []); |
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} |
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return $this->createItem($newItemData); |
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} |
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protected function createItem($data): ItemInterface |
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{ |
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if (!is_array($data)) { |
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throw new ChainOperationException(sprintf('Split operation expects an array to split; "%s', gettype($data))); |
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} |
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$items = []; |
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foreach ($data as $datum) { |
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if ($datum instanceof ItemInterface) { |
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$items[] = $datum; |
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} else { |
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$items[] = new DataItem($datum); |
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} |
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} |
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return new MixItem($items); |
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} |
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} |
oliverde8 /
php-etl
