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<?php
declare(strict_types=1);
namespace Doctrine\ORM\Internal\Hydration;
use BackedEnum;
use Doctrine\Common\Collections\ArrayCollection;
use Doctrine\ORM\Mapping\ClassMetadata;
use Doctrine\ORM\PersistentCollection;
use Doctrine\ORM\Query;
use Doctrine\ORM\UnitOfWork;
use function array_fill_keys;
use function array_keys;
use function array_map;
use function count;
use function is_array;
use function key;
use function ltrim;
use function spl_object_id;
/**
* The ObjectHydrator constructs an object graph out of an SQL result set.
*
* Internal note: Highly performance-sensitive code.
*/
class ObjectHydrator extends AbstractHydrator
{
/** @var mixed[] */
private $identifierMap = [];
/** @var mixed[] */
private $resultPointers = [];
/** @var mixed[] */
private $idTemplate = [];
/** @var int */
private $resultCounter = 0;
/** @var mixed[] */
private $rootAliases = [];
/** @var mixed[] */
private $initializedCollections = [];
/** @var array<string, PersistentCollection> */
private $uninitializedCollections = [];
/** @var mixed[] */
private $existingCollections = [];
/**
* {@inheritDoc}
*/
protected function prepare()
{
if (! isset($this->_hints[UnitOfWork::HINT_DEFEREAGERLOAD])) {
$this->_hints[UnitOfWork::HINT_DEFEREAGERLOAD] = true;
}
foreach ($this->resultSetMapping()->aliasMap as $dqlAlias => $className) {
$this->identifierMap[$dqlAlias] = [];
$this->idTemplate[$dqlAlias] = '';
// Remember which associations are "fetch joined", so that we know where to inject
// collection stubs or proxies and where not.
if (! isset($this->resultSetMapping()->relationMap[$dqlAlias])) {
continue;
}
$parent = $this->resultSetMapping()->parentAliasMap[$dqlAlias];
if (! isset($this->resultSetMapping()->aliasMap[$parent])) {
throw HydrationException::parentObjectOfRelationNotFound($dqlAlias, $parent);
}
$sourceClassName = $this->resultSetMapping()->aliasMap[$parent];
$sourceClass = $this->getClassMetadata($sourceClassName);
$assoc = $sourceClass->associationMappings[$this->resultSetMapping()->relationMap[$dqlAlias]];
$this->_hints['fetched'][$parent][$assoc['fieldName']] = true;
if ($assoc['type'] === ClassMetadata::MANY_TO_MANY) {
continue;
}
// Mark any non-collection opposite sides as fetched, too.
if ($assoc['mappedBy']) {
$this->_hints['fetched'][$dqlAlias][$assoc['mappedBy']] = true;
continue;
}
// handle fetch-joined owning side bi-directional one-to-one associations
if ($assoc['inversedBy']) {
$class = $this->getClassMetadata($className);
$inverseAssoc = $class->associationMappings[$assoc['inversedBy']];
if (! ($inverseAssoc['type'] & ClassMetadata::TO_ONE)) {
continue;
}
$this->_hints['fetched'][$dqlAlias][$inverseAssoc['fieldName']] = true;
}
}
}
/**
* {@inheritDoc}
*/
protected function cleanup()
{
$eagerLoad = isset($this->_hints[UnitOfWork::HINT_DEFEREAGERLOAD]) && $this->_hints[UnitOfWork::HINT_DEFEREAGERLOAD] === true;
parent::cleanup();
$this->identifierMap =
$this->initializedCollections =
$this->uninitializedCollections =
$this->existingCollections =
$this->resultPointers = [];
if ($eagerLoad) {
$this->_uow->triggerEagerLoads();
}
$this->_uow->hydrationComplete();
}
protected function cleanupAfterRowIteration(): void
{
$this->identifierMap =
$this->initializedCollections =
$this->uninitializedCollections =
$this->existingCollections =
$this->resultPointers = [];
}
/**
* {@inheritDoc}
*/
protected function hydrateAllData()
{
$result = [];
while ($row = $this->statement()->fetchAssociative()) {
$this->hydrateRowData($row, $result);
}
// Take snapshots from all newly initialized collections
foreach ($this->initializedCollections as $coll) {
$coll->takeSnapshot();
}
foreach ($this->uninitializedCollections as $coll) {
if (! $coll->isInitialized()) {
$coll->setInitialized(true);
}
}
return $result;
}
/**
* Initializes a related collection.
*
* @param object $entity The entity to which the collection belongs.
* @param string $fieldName The name of the field on the entity that holds the collection.
* @param string $parentDqlAlias Alias of the parent fetch joining this collection.
*/
private function initRelatedCollection(
$entity,
ClassMetadata $class,
string $fieldName,
string $parentDqlAlias
): PersistentCollection {
$oid = spl_object_id($entity);
$relation = $class->associationMappings[$fieldName];
$value = $class->reflFields[$fieldName]->getValue($entity);
if ($value === null || is_array($value)) {
$value = new ArrayCollection((array) $value);
}
if (! $value instanceof PersistentCollection) {
$value = new PersistentCollection(
$this->_em,
$this->_metadataCache[$relation['targetEntity']],
$value
);
$value->setOwner($entity, $relation);
$class->reflFields[$fieldName]->setValue($entity, $value);
$this->_uow->setOriginalEntityProperty($oid, $fieldName, $value);
$this->initializedCollections[$oid . $fieldName] = $value;
} elseif (
isset($this->_hints[Query::HINT_REFRESH]) ||
isset($this->_hints['fetched'][$parentDqlAlias][$fieldName]) &&
! $value->isInitialized()
) {
// Is already PersistentCollection, but either REFRESH or FETCH-JOIN and UNINITIALIZED!
$value->setDirty(false);
$value->setInitialized(true);
$value->unwrap()->clear();
$this->initializedCollections[$oid . $fieldName] = $value;
} else {
// Is already PersistentCollection, and DON'T REFRESH or FETCH-JOIN!
$this->existingCollections[$oid . $fieldName] = $value;
}
return $value;
}
/**
* Gets an entity instance.
*
* @param string $dqlAlias The DQL alias of the entity's class.
* @psalm-param array<string, mixed> $data The instance data.
*
* @return object
*
* @throws HydrationException
*/
private function getEntity(array $data, string $dqlAlias)
{
$className = $this->resultSetMapping()->aliasMap[$dqlAlias];
if (isset($this->resultSetMapping()->discriminatorColumns[$dqlAlias])) {
$fieldName = $this->resultSetMapping()->discriminatorColumns[$dqlAlias];
if (! isset($this->resultSetMapping()->metaMappings[$fieldName])) {
throw HydrationException::missingDiscriminatorMetaMappingColumn($className, $fieldName, $dqlAlias);
}
$discrColumn = $this->resultSetMapping()->metaMappings[$fieldName];
if (! isset($data[$discrColumn])) {
throw HydrationException::missingDiscriminatorColumn($className, $discrColumn, $dqlAlias);
}
if ($data[$discrColumn] === '') {
throw HydrationException::emptyDiscriminatorValue($dqlAlias);
}
$discrMap = $this->_metadataCache[$className]->discriminatorMap;
$discriminatorValue = $data[$discrColumn];
if ($discriminatorValue instanceof BackedEnum) {
$discriminatorValue = $discriminatorValue->value;
}
$discriminatorValue = (string) $discriminatorValue;
if (! isset($discrMap[$discriminatorValue])) {
throw HydrationException::invalidDiscriminatorValue($discriminatorValue, array_keys($discrMap));
}
$className = $discrMap[$discriminatorValue];
unset($data[$discrColumn]);
}
if (isset($this->_hints[Query::HINT_REFRESH_ENTITY], $this->rootAliases[$dqlAlias])) {
$this->registerManaged($this->_metadataCache[$className], $this->_hints[Query::HINT_REFRESH_ENTITY], $data);
}
$this->_hints['fetchAlias'] = $dqlAlias;
return $this->_uow->createEntity($className, $data, $this->_hints);
}
/**
* @param class-string $className
* @psalm-param array<string, mixed> $data
*
* @return mixed
*/
private function getEntityFromIdentityMap(string $className, array $data)
{
// TODO: Abstract this code and UnitOfWork::createEntity() equivalent?
$class = $this->_metadataCache[$className];
if ($class->isIdentifierComposite) {
$idHash = UnitOfWork::getIdHashByIdentifier(
array_map(
/** @return mixed */
static function (string $fieldName) use ($data, $class) {
return isset($class->associationMappings[$fieldName])
? $data[$class->associationMappings[$fieldName]['joinColumns'][0]['name']]
: $data[$fieldName];
},
$class->identifier
)
);
return $this->_uow->tryGetByIdHash(ltrim($idHash), $class->rootEntityName);
} elseif (isset($class->associationMappings[$class->identifier[0]])) {
return $this->_uow->tryGetByIdHash($data[$class->associationMappings[$class->identifier[0]]['joinColumns'][0]['name']], $class->rootEntityName);
}
return $this->_uow->tryGetByIdHash($data[$class->identifier[0]], $class->rootEntityName);
}
/**
* Hydrates a single row in an SQL result set.
*
* @internal
* First, the data of the row is split into chunks where each chunk contains data
* that belongs to a particular component/class. Afterwards, all these chunks
* are processed, one after the other. For each chunk of class data only one of the
* following code paths is executed:
* Path A: The data chunk belongs to a joined/associated object and the association
* is collection-valued.
* Path B: The data chunk belongs to a joined/associated object and the association
* is single-valued.
* Path C: The data chunk belongs to a root result element/object that appears in the topmost
* level of the hydrated result. A typical example are the objects of the type
* specified by the FROM clause in a DQL query.
*
* @param mixed[] $row The data of the row to process.
* @param mixed[] $result The result array to fill.
*
* @return void
*/
protected function hydrateRowData(array $row, array &$result)
{
// Initialize
$id = $this->idTemplate; // initialize the id-memory
$nonemptyComponents = [];
// Split the row data into chunks of class data.
$rowData = $this->gatherRowData($row, $id, $nonemptyComponents);
// reset result pointers for each data row
$this->resultPointers = [];
// Hydrate the data chunks
foreach ($rowData['data'] as $dqlAlias => $data) {
$entityName = $this->resultSetMapping()->aliasMap[$dqlAlias];
if (isset($this->resultSetMapping()->parentAliasMap[$dqlAlias])) {
// It's a joined result
$parentAlias = $this->resultSetMapping()->parentAliasMap[$dqlAlias];
// we need the $path to save into the identifier map which entities were already
// seen for this parent-child relationship
$path = $parentAlias . '.' . $dqlAlias;
// We have a RIGHT JOIN result here. Doctrine cannot hydrate RIGHT JOIN Object-Graphs
if (! isset($nonemptyComponents[$parentAlias])) {
// TODO: Add special case code where we hydrate the right join objects into identity map at least
continue;
}
$parentClass = $this->_metadataCache[$this->resultSetMapping()->aliasMap[$parentAlias]];
$relationField = $this->resultSetMapping()->relationMap[$dqlAlias];
$relation = $parentClass->associationMappings[$relationField];
$reflField = $parentClass->reflFields[$relationField];
// Get a reference to the parent object to which the joined element belongs.
if ($this->resultSetMapping()->isMixed && isset($this->rootAliases[$parentAlias])) {
$objectClass = $this->resultPointers[$parentAlias];
$parentObject = $objectClass[key($objectClass)];
} elseif (isset($this->resultPointers[$parentAlias])) {
$parentObject = $this->resultPointers[$parentAlias];
} else {
// Parent object of relation not found, mark as not-fetched again
if (isset($nonemptyComponents[$dqlAlias])) {
$element = $this->getEntity($data, $dqlAlias);
// Update result pointer and provide initial fetch data for parent
$this->resultPointers[$dqlAlias] = $element;
$rowData['data'][$parentAlias][$relationField] = $element;
} else {
$element = null;
}
// Mark as not-fetched again
unset($this->_hints['fetched'][$parentAlias][$relationField]);
continue;
}
$oid = spl_object_id($parentObject);
// Check the type of the relation (many or single-valued)
if (! ($relation['type'] & ClassMetadata::TO_ONE)) {
// PATH A: Collection-valued association
$reflFieldValue = $reflField->getValue($parentObject);
if (isset($nonemptyComponents[$dqlAlias])) {
$collKey = $oid . $relationField;
if (isset($this->initializedCollections[$collKey])) {
$reflFieldValue = $this->initializedCollections[$collKey];
} elseif (! isset($this->existingCollections[$collKey])) {
$reflFieldValue = $this->initRelatedCollection($parentObject, $parentClass, $relationField, $parentAlias);
}
$indexExists = isset($this->identifierMap[$path][$id[$parentAlias]][$id[$dqlAlias]]);
$index = $indexExists ? $this->identifierMap[$path][$id[$parentAlias]][$id[$dqlAlias]] : false;
$indexIsValid = $index !== false ? isset($reflFieldValue[$index]) : false;
if (! $indexExists || ! $indexIsValid) {
if (isset($this->existingCollections[$collKey])) {
// Collection exists, only look for the element in the identity map.
$element = $this->getEntityFromIdentityMap($entityName, $data);
if ($element) {
$this->resultPointers[$dqlAlias] = $element;
} else {
unset($this->resultPointers[$dqlAlias]);
}
} else {
$element = $this->getEntity($data, $dqlAlias);
if (isset($this->resultSetMapping()->indexByMap[$dqlAlias])) {
$indexValue = $row[$this->resultSetMapping()->indexByMap[$dqlAlias]];
$reflFieldValue->hydrateSet($indexValue, $element);
$this->identifierMap[$path][$id[$parentAlias]][$id[$dqlAlias]] = $indexValue;
} else {
if (! $reflFieldValue->contains($element)) {
$reflFieldValue->hydrateAdd($element);
$reflFieldValue->last();
}
$this->identifierMap[$path][$id[$parentAlias]][$id[$dqlAlias]] = $reflFieldValue->key();
}
// Update result pointer
$this->resultPointers[$dqlAlias] = $element;
}
} else {
// Update result pointer
$this->resultPointers[$dqlAlias] = $reflFieldValue[$index];
}
} elseif (! $reflFieldValue) {
$this->initRelatedCollection($parentObject, $parentClass, $relationField, $parentAlias);
} elseif ($reflFieldValue instanceof PersistentCollection && $reflFieldValue->isInitialized() === false && ! isset($this->uninitializedCollections[$oid . $relationField])) {
$this->uninitializedCollections[$oid . $relationField] = $reflFieldValue;
}
} else {
// PATH B: Single-valued association
$reflFieldValue = $reflField->getValue($parentObject);
if (! $reflFieldValue || isset($this->_hints[Query::HINT_REFRESH]) || $this->_uow->isUninitializedObject($reflFieldValue)) {
// we only need to take action if this value is null,
// we refresh the entity or its an uninitialized proxy.
if (isset($nonemptyComponents[$dqlAlias])) {
$element = $this->getEntity($data, $dqlAlias);
$reflField->setValue($parentObject, $element);
$this->_uow->setOriginalEntityProperty($oid, $relationField, $element);
$targetClass = $this->_metadataCache[$relation['targetEntity']];
if ($relation['isOwningSide']) {
// TODO: Just check hints['fetched'] here?
// If there is an inverse mapping on the target class its bidirectional
if ($relation['inversedBy']) {
$inverseAssoc = $targetClass->associationMappings[$relation['inversedBy']];
if ($inverseAssoc['type'] & ClassMetadata::TO_ONE) {
$targetClass->reflFields[$inverseAssoc['fieldName']]->setValue($element, $parentObject);
$this->_uow->setOriginalEntityProperty(spl_object_id($element), $inverseAssoc['fieldName'], $parentObject);
}
}
} else {
// For sure bidirectional, as there is no inverse side in unidirectional mappings
$targetClass->reflFields[$relation['mappedBy']]->setValue($element, $parentObject);
$this->_uow->setOriginalEntityProperty(spl_object_id($element), $relation['mappedBy'], $parentObject);
}
// Update result pointer
$this->resultPointers[$dqlAlias] = $element;
} else {
$this->_uow->setOriginalEntityProperty($oid, $relationField, null);
$reflField->setValue($parentObject, null);
}
// else leave $reflFieldValue null for single-valued associations
} else {
// Update result pointer
$this->resultPointers[$dqlAlias] = $reflFieldValue;
}
}
} else {
// PATH C: Its a root result element
$this->rootAliases[$dqlAlias] = true; // Mark as root alias
$entityKey = $this->resultSetMapping()->entityMappings[$dqlAlias] ?: 0;
// if this row has a NULL value for the root result id then make it a null result.
if (! isset($nonemptyComponents[$dqlAlias])) {
if ($this->resultSetMapping()->isMixed) {
$result[] = [$entityKey => null];
} else {
$result[] = null;
}
$resultKey = $this->resultCounter;
++$this->resultCounter;
continue;
}
// check for existing result from the iterations before
if (! isset($this->identifierMap[$dqlAlias][$id[$dqlAlias]])) {
$element = $this->getEntity($data, $dqlAlias);
if ($this->resultSetMapping()->isMixed) {
$element = [$entityKey => $element];
}
if (isset($this->resultSetMapping()->indexByMap[$dqlAlias])) {
$resultKey = $row[$this->resultSetMapping()->indexByMap[$dqlAlias]];
if (isset($this->_hints['collection'])) {
$this->_hints['collection']->hydrateSet($resultKey, $element);
}
$result[$resultKey] = $element;
} else {
$resultKey = $this->resultCounter;
++$this->resultCounter;
if (isset($this->_hints['collection'])) {
$this->_hints['collection']->hydrateAdd($element);
}
$result[] = $element;
}
$this->identifierMap[$dqlAlias][$id[$dqlAlias]] = $resultKey;
// Update result pointer
$this->resultPointers[$dqlAlias] = $element;
} else {
// Update result pointer
$index = $this->identifierMap[$dqlAlias][$id[$dqlAlias]];
$this->resultPointers[$dqlAlias] = $result[$index];
$resultKey = $index;
}
}
if (isset($this->_hints[Query::HINT_INTERNAL_ITERATION]) && $this->_hints[Query::HINT_INTERNAL_ITERATION]) {
$this->_uow->hydrationComplete();
}
}
if (! isset($resultKey)) {
$this->resultCounter++;
}
// Append scalar values to mixed result sets
if (isset($rowData['scalars'])) {
if (! isset($resultKey)) {
$resultKey = isset($this->resultSetMapping()->indexByMap['scalars'])
? $row[$this->resultSetMapping()->indexByMap['scalars']]
: $this->resultCounter - 1;
}
foreach ($rowData['scalars'] as $name => $value) {
$result[$resultKey][$name] = $value;
}
}
// Append new object to mixed result sets
if (isset($rowData['newObjects'])) {
if (! isset($resultKey)) {
$resultKey = $this->resultCounter - 1;
}
$scalarCount = (isset($rowData['scalars']) ? count($rowData['scalars']) : 0);
foreach ($rowData['newObjects'] as $objIndex => $newObject) {
$class = $newObject['class'];
$args = $newObject['args'];
$obj = $class->newInstanceArgs($args);
if ($scalarCount === 0 && count($rowData['newObjects']) === 1) {
$result[$resultKey] = $obj;
continue;
}
$result[$resultKey][$objIndex] = $obj;
}
}
}
/**
* When executed in a hydrate() loop we may have to clear internal state to
* decrease memory consumption.
*
* @param mixed $eventArgs
*
* @return void
*/
public function onClear($eventArgs)
{
parent::onClear($eventArgs);
$aliases = array_keys($this->identifierMap);
$this->identifierMap = array_fill_keys($aliases, []);
}
}

vendor/doctrine/orm/src/Internal/Hydration/ObjectHydrator.php line 328