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<?php |
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namespace Wandu\Database\Connection; |
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use Exception; |
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use PDO; |
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use PDOStatement; |
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use Throwable; |
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use Wandu\Database\Contracts\Connection; |
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use Wandu\Database\Events\ExecuteQuery; |
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use Wandu\Event\Contracts\EventEmitter; |
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class MysqlConnection implements Connection |
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{ |
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/** @var \PDO */ |
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protected $pdo; |
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/** @var \Wandu\Event\Contracts\EventEmitter */ |
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protected $emitter; |
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public function __construct(PDO $pdo) |
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{ |
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$this->pdo = $pdo; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function setEventEmitter(EventEmitter $emitter) |
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{ |
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$this->emitter = $emitter; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function fetch(string $query, array $bindings = []) |
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{ |
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$statement = $this->execute($query, $bindings); |
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while ($row = $statement->fetch(PDO::FETCH_ASSOC)) { |
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yield $row; |
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} |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function first(string $query, array $bindings = []) |
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{ |
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$attributes = $this->execute($query, $bindings)->fetch(PDO::FETCH_ASSOC); |
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return $attributes ?: null; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function query(string $query, array $bindings = []) |
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{ |
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return $this->execute($query, $bindings)->rowCount(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getLastInsertId() |
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{ |
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return $this->pdo->lastInsertId(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function transaction(callable $handler) |
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{ |
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$this->pdo->beginTransaction(); |
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try { |
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$result = call_user_func($handler, $this); |
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} catch (Exception $e) { |
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$this->pdo->rollBack(); |
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throw $e; |
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} catch (Throwable $e) { |
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$this->pdo->rollBack(); |
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throw $e; |
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} |
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$this->pdo->commit(); |
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return $result; |
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} |
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/** |
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* @param string $query |
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* @param array $bindings |
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* @return \PDOStatement |
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*/ |
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protected function execute(string $query, array $bindings = []) |
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{ |
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$statement = $this->pdo->prepare($query); |
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$this->bindValues($statement, $bindings); |
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$statement->execute(); |
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if ($this->emitter) { |
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$this->emitter->trigger(new ExecuteQuery($statement->queryString, $bindings)); |
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} |
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return $statement; |
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} |
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/** |
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* @param \PDOStatement $statement |
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* @param array $bindings |
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*/ |
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protected function bindValues(PDOStatement $statement, array $bindings = []) |
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{ |
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foreach ($bindings as $key => $value) { |
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if (is_int($value)) { |
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$dataType = PDO::PARAM_INT; |
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} elseif (is_bool($value)) { |
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$dataType = PDO::PARAM_BOOL; |
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} elseif (is_null($value)) { |
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$dataType = PDO::PARAM_NULL; |
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} else { |
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$dataType = PDO::PARAM_STR; |
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} |
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$statement->bindValue( |
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is_int($key) ? $key + 1 : $key, |
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$value, |
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$dataType |
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); |
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} |
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} |
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} |
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Wandu /
Framework
