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<?php |
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namespace Wandu\Database; |
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use InvalidArgumentException; |
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use ReflectionClass; |
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use ReflectionProperty; |
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use Wandu\Caster\CastManagerInterface; |
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use Wandu\Collection\ArrayList; |
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use Wandu\Collection\Contracts\ListInterface; |
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use Wandu\Database\Contracts\Connection; |
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use Wandu\Database\Contracts\QueryInterface; |
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use Wandu\Database\Entity\Metadata; |
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use Wandu\Database\Exception\EntityNotFoundException; |
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use Wandu\Database\Query\SelectQuery; |
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class Repository |
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{ |
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/** @var \Wandu\Database\Contracts\Connection */ |
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protected $connection; |
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/** @var \Wandu\Database\Entity\Metadata */ |
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protected $meta; |
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/** @var \Wandu\Caster\CastManagerInterface */ |
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protected $caster; |
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/** @var \Wandu\Database\QueryBuilder */ |
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protected $queryBuilder; |
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/** @var \ReflectionClass */ |
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protected $reflClass; |
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/** @var \ReflectionProperty[] */ |
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protected $refProperties = []; |
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/** @var array */ |
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protected static $entityCache = []; |
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public function __construct( |
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DatabaseManager $manager, |
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Connection $connection, |
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QueryBuilder $queryBuilder, |
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Metadata $meta, |
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Configuration $config |
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) { |
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$this->manager = $manager; |
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$this->connection = $connection; |
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$this->caster = $config->getCaster(); |
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$this->queryBuilder = $queryBuilder; |
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$this->meta = $meta; |
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} |
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/** |
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* @param string|callable|\Wandu\Database\Contracts\QueryInterface $query |
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* @param array $bindings |
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* @return \Generator |
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*/ |
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public function fetch($query = null, array $bindings = []) |
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{ |
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foreach ($this->connection->fetch(...$this->normalizeSelectQuery($query, $bindings)) as $row) { |
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yield $this->hydrate($row); |
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} |
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} |
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/** |
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* @param string|callable|\Wandu\Database\Contracts\QueryInterface $query |
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* @param array $bindings |
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* @return \Wandu\Collection\Contracts\ListInterface |
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*/ |
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public function all($query = null, array $bindings = []): ListInterface |
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{ |
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return new ArrayList($this->fetch($query, $bindings)); |
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} |
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/** |
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* @param string|callable|\Wandu\Database\Contracts\QueryInterface $query |
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* @param array $bindings |
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* @return ?object |
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*/ |
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public function first($query = null, array $bindings = []) |
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{ |
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$entity = $this->connection->first(...$this->normalizeSelectQuery($query, $bindings)); |
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if ($entity) { |
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return $this->hydrate($entity); |
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} |
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} |
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/** |
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* @param string|callable|\Wandu\Database\Contracts\QueryInterface $query |
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* @param array $bindings |
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* @return object |
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* @throws \Wandu\Database\Exception\EntityNotFoundException |
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*/ |
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public function firstOrFail($query = null, array $bindings = []) |
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{ |
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if ($entity = $this->first($query, $bindings)) { |
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return $entity; |
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} |
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throw new EntityNotFoundException(); |
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} |
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/** |
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* @param string|int $identifier |
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* @return object |
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*/ |
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public function find($identifier) |
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{ |
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return $this->first(function (SelectQuery $select) use ($identifier) { |
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return $select->where($this->meta->getPrimaryKey(), $identifier); |
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}); |
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} |
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/** |
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* @param string|int $identifier |
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* @return object |
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* @throws \Wandu\Database\Exception\EntityNotFoundException |
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*/ |
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public function findOrFail($identifier) |
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{ |
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return $this->firstOrFail(function (SelectQuery $select) use ($identifier) { |
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return $select->where($this->meta->getPrimaryKey(), $identifier); |
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}); |
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} |
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/** |
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* @param array $identifiers |
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* @return \Wandu\Collection\Contracts\ListInterface |
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*/ |
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public function findMany(array $identifiers = []): ListInterface |
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{ |
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return $this->all(function (SelectQuery $select) use ($identifiers) { |
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return $select->where($this->meta->getPrimaryKey(), 'IN', $identifiers); |
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}); |
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} |
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/** |
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* @param object $entity |
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* @return int |
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*/ |
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public function persist($entity) |
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{ |
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$this->assertIsInstance($entity, __METHOD__); |
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$identifier = $this->getIdentifier($entity); |
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if ($identifier) { |
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return $this->executeUpdate($entity); |
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} |
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return $this->executeInsert($entity); |
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} |
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/** |
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* @param object $entity |
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* @return int |
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*/ |
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protected function executeInsert($entity) |
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{ |
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$primaryKey = $this->meta->getPrimaryKey(); |
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$primaryProperty = null; |
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$columns = $this->meta->getColumns(); |
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$attributesToStore = []; |
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foreach ($columns as $propertyName => $column) { |
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if ($primaryKey === $column->name) { |
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$primaryProperty = $propertyName; |
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continue; |
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} |
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$attributesToStore[$column->name] = $this->pickProperty($this->getPropertyReflection($propertyName), $entity); |
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} |
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$rowAffected = $this->query($this->queryBuilder->insert($attributesToStore)); |
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if ($this->meta->isIncrements()) { |
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$lastInsertId = $this->connection->getLastInsertId(); |
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if ($primaryProperty) { |
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$this->injectProperty($this->getPropertyReflection($primaryProperty), $entity, $lastInsertId); |
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} |
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} |
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return $rowAffected; |
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} |
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/** |
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* @param object $entity |
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* @return int |
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*/ |
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protected function executeUpdate($entity) |
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{ |
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$primaryKey = $this->meta->getPrimaryKey(); |
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$identifier = $this->getIdentifier($entity); |
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$attributesToStore = []; |
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foreach ($this->meta->getColumns() as $propertyName => $column) { |
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if ($primaryKey === $column->name) continue; |
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$attributesToStore[$column->name] = $this->pickProperty($this->getPropertyReflection($propertyName), $entity); |
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} |
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return $this->query( |
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$this->queryBuilder->update($attributesToStore)->where($primaryKey, $identifier) |
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); |
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} |
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/** |
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* @param object $entity |
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* @return int |
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*/ |
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public function delete($entity) |
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{ |
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$this->assertIsInstance($entity, __METHOD__); |
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$primaryKey = $this->meta->getPrimaryKey(); |
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$identifier = $this->getIdentifier($entity); |
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if (!$identifier) { |
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return 0; |
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} |
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$affectedRows = $this->query($this->queryBuilder->delete()->where($primaryKey, $identifier)); |
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if ($identifierProperty = $this->meta->getPrimaryProperty()) { |
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$this->injectProperty($this->getPropertyReflection($identifierProperty), $entity, null); |
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} |
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return $affectedRows; |
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} |
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/** |
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* @param string|callable|\Wandu\Database\Contracts\QueryInterface $query |
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* @param array $bindings |
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* @return int |
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*/ |
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protected function query($query, array $bindings = []) |
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{ |
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while (is_callable($query)) { |
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$query = call_user_func($query); |
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} |
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if ($query instanceof QueryInterface) { |
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$bindings = $query->getBindings(); |
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$query = $query->toSql(); |
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} |
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return $this->connection->query($query, $bindings); |
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} |
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/** |
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* @param array $attributes |
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* @return object |
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*/ |
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public function hydrate(array $attributes = null) |
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{ |
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if (!$attributes) { |
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return null; |
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} |
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$entityCacheId = $this->meta->getClass() . '#' . $attributes[$this->meta->getPrimaryKey()]; |
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if (isset(static::$entityCache[$entityCacheId])) return static::$entityCache[$entityCacheId]; |
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$casts = $this->meta->getCasts(); |
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$relations = $this->meta->getRelations(); |
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$entity = $this->getClassReflection()->newInstanceWithoutConstructor(); |
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static::$entityCache[$entityCacheId] = $entity; |
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foreach ($this->meta->getColumns() as $propertyName => $column) { |
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if (!isset($attributes[$column->name])) continue; |
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if (isset($relations[$propertyName])) { |
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$value = $relations[$propertyName]->getRelation($this->manager, $attributes[$column->name]); |
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} elseif (isset($casts[$propertyName])) { |
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$value = $this->caster->cast($attributes[$column->name], $casts[$propertyName]->type); |
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} else { |
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$value = $attributes[$column->name]; |
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} |
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$this->injectProperty($this->getPropertyReflection($propertyName), $entity, $value); |
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} |
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265
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unset(static::$entityCache[$entityCacheId]); |
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return $entity; |
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} |
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269
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/** |
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* @param mixed $entity |
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* @return string|int |
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*/ |
273
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2 |
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private function getIdentifier($entity) |
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{ |
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2 |
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$identifier = null; |
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2 |
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if ($identifierProperty = $this->meta->getPrimaryProperty()) { |
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$identifier = $this->pickProperty($this->getPropertyReflection($identifierProperty), $entity); |
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} |
279
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return $identifier; |
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} |
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282
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14 |
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private function normalizeSelectQuery($query = null, array $bindings = []) |
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{ |
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14 |
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if (!isset($query) || is_callable($query)) { |
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9 |
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$connection = $this->connection; |
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9 |
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$queryBuilder = $this->queryBuilder->select(); |
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9 |
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if (!isset($query)) { |
288
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return $queryBuilder; |
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} |
290
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9 |
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while (is_callable($query)) { |
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9 |
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$query = call_user_func($query, $queryBuilder, $connection); |
292
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} |
293
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} |
294
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14 |
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if ($query instanceof QueryInterface) { |
295
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9 |
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$bindings = $query->getBindings(); |
296
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9 |
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$query = $query->toSql(); |
297
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} |
298
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14 |
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return [$query, $bindings]; |
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} |
300
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301
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/** |
302
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* @param \ReflectionProperty $property |
303
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* @param object $object |
304
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* @param mixed $target |
305
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*/ |
306
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15 |
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private function injectProperty(ReflectionProperty $property, $object, $target) |
307
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{ |
308
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15 |
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$property->setAccessible(true); |
309
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$property->setValue($object, $target); |
310
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15 |
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} |
311
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312
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/** |
313
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* @param \ReflectionProperty $property |
314
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* @param object $object |
315
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* @return mixed |
316
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*/ |
317
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2 |
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private function pickProperty(ReflectionProperty $property, $object) |
318
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{ |
319
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2 |
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$property->setAccessible(true); |
320
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2 |
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return $property->getValue($object); |
321
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} |
322
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323
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/** |
324
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* @param string $name |
325
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* @return \ReflectionProperty |
326
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*/ |
327
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15 |
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private function getPropertyReflection($name): ReflectionProperty |
328
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{ |
329
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15 |
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if (!isset($this->refProperties[$name])) { |
330
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15 |
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return $this->refProperties[$name] = $this->getClassReflection()->getProperty($name); |
331
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} |
332
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9 |
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return $this->refProperties[$name]; |
333
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} |
334
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335
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/** |
336
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* @return \ReflectionClass |
337
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*/ |
338
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15 |
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private function getClassReflection(): ReflectionClass |
339
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{ |
340
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15 |
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if (!isset($this->reflClass)) { |
341
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15 |
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return $this->reflClass = new ReflectionClass($this->meta->getClass()); |
342
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} |
343
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15 |
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return $this->reflClass; |
344
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} |
345
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346
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/** |
347
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* @param mixed $entity |
348
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* @param string $method |
349
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*/ |
350
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2 |
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private function assertIsInstance($entity, $method) |
351
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|
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{ |
352
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2 |
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$class = $this->meta->getClass(); |
353
|
2 |
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if (!$entity instanceof $class) { |
354
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2 |
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throw new InvalidArgumentException( |
355
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2 |
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"Argument 1 passed to {$method}() must be of the type " . $class |
356
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); |
357
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} |
358
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2 |
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} |
359
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: