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<?php |
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namespace Smart\EtlBundle\Generator; |
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use Doctrine\ORM\EntityManagerInterface; |
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use Symfony\Component\PropertyAccess\PropertyAccess; |
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use Symfony\Component\PropertyAccess\PropertyAccessor; |
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/** |
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* @author Mathieu Ducrot <[email protected]> |
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* |
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* The DiffGenerator class is responsible for comparing a raw data with data pulled from the manager on the entity and |
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* generating a diff preview with the changes needed to migrate from one data to the other. |
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*/ |
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class DiffGenerator |
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{ |
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/** @var EntityManagerInterface */ |
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protected $entityManager; |
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/** @var PropertyAccessor */ |
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protected $accessor; |
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public function __construct(EntityManagerInterface $entityManager) |
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{ |
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$this->entityManager = $entityManager; |
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$this->accessor = PropertyAccess::createPropertyAccessor(); |
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} |
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/** |
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* @param array $multiArrayData multidimensional array data containing one entity data per row |
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* @TODO $identifierCallback can be remove once DiffGenerator will work with multiEntityData instead of Array |
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*/ |
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public function generateDiffs(string $entityClass, array $multiArrayData, string $identifier = null, $identifierCallback = null) |
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{ |
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$toReturn = []; |
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if ($multiArrayData === []) { |
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return $toReturn; |
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} |
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$identifier = $identifier ?? array_keys($multiArrayData[0])[0]; |
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// todo enhance entity query by only getting the one that identier are matching from $multiArrayData |
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$entitiesFromDb = $this->entityManager->getRepository($entityClass) |
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->createQueryBuilder('o', "o.$identifier") |
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->getQuery() |
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->getResult() |
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; |
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foreach ($multiArrayData as $key => $row) { |
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if ($identifierCallback === null) { |
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$entityFromDb = $entitiesFromDb[reset($row)] ?? null; |
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} else { |
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$entityFromDb = $entitiesFromDb[$identifierCallback($row)] ?? null; |
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} |
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$toReturn[$key] = $this->generateDiff($entityFromDb, $row); |
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} |
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return $toReturn; |
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} |
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/** |
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* @param mixed $entity |
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*/ |
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public function generateDiff($entity, array $data): array |
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{ |
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$isNew = ($entity === null); |
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$toReturn['diff_type'] = 'new'; |
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$hasDataChange = false; |
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foreach ($data as $property => $value) { |
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$toReturn['diff'][$property] = $value; |
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if (!$isNew) { |
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$toReturn['diff_type'] = 'change'; |
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$originValue = $this->accessor->getValue($entity, $property); |
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$hasChange = ($originValue != $value); |
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$toReturn['diff'][$property] = [ |
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'value' => $value, |
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'origin_value' => $originValue, |
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'has_change' => $hasChange, |
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]; |
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if ($hasChange) { |
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$hasDataChange = true; |
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} |
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} |
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} |
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if (!$isNew && !$hasDataChange) { |
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$toReturn['diff_type'] = 'unchanged'; |
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} |
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return $toReturn; |
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} |
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} |
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smartbooster /
etl-bundle
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