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<?php |
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namespace Nip\Database\Connectors; |
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use PDO; |
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/** |
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* Class Connector |
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* @package Nip\Database\Connectors |
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*/ |
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class Connector |
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{ |
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/** |
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* The default PDO connection options. |
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* |
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* @var array |
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*/ |
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protected $options = [ |
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PDO::ATTR_CASE => PDO::CASE_NATURAL, |
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PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, |
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PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL, |
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PDO::ATTR_STRINGIFY_FETCHES => false, |
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PDO::ATTR_EMULATE_PREPARES => false, |
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]; |
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/** |
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* Create a new PDO connection. |
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* |
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* @param string $dsn |
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* @param array $config |
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* @param array $options |
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* @return \PDO |
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* |
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* @throws \Exception |
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*/ |
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public function createConnection($dsn, array $config, array $options) |
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{ |
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[$username, $password] = [ |
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$config['username'] ?? null, |
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$config['password'] ?? null, |
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]; |
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try { |
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return $this->createPdoConnection( |
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$dsn, |
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$username, |
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$password, |
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$options |
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); |
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} catch (Exception $e) { |
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return $this->tryAgainIfCausedByLostConnection( |
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$e, |
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$dsn, |
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$username, |
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$password, |
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$options |
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); |
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} |
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} |
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/** |
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* Create a new PDO connection instance. |
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* |
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* @param string $dsn |
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* @param string $username |
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* @param string $password |
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* @param array $options |
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* @return \PDO |
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*/ |
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protected function createPdoConnection($dsn, $username, $password, $options) |
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{ |
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if (class_exists(PDOConnection::class) && !$this->isPersistentConnection($options)) { |
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return new PDOConnection($dsn, $username, $password, $options); |
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} |
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return new PDO($dsn, $username, $password, $options); |
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} |
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/** |
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* Determine if the connection is persistent. |
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* |
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* @param array $options |
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* @return bool |
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*/ |
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protected function isPersistentConnection($options) |
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{ |
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return isset($options[PDO::ATTR_PERSISTENT]) && |
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$options[PDO::ATTR_PERSISTENT]; |
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} |
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/** |
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* Handle an exception that occurred during connect execution. |
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* |
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* @param \Throwable $e |
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* @param string $dsn |
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* @param string $username |
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* @param string $password |
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* @param array $options |
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* @return \PDO |
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* |
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* @throws \Exception |
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*/ |
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protected function tryAgainIfCausedByLostConnection(Throwable $e, $dsn, $username, $password, $options) |
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{ |
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if ($this->causedByLostConnection($e)) { |
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return $this->createPdoConnection($dsn, $username, $password, $options); |
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} |
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throw $e; |
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} |
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/** |
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* Get the PDO options based on the configuration. |
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* |
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* @param array $config |
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* @return array |
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*/ |
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public function getOptions(array $config) |
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{ |
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$options = $config['options'] ?? []; |
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return array_diff_key($this->options, $options) + $options; |
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} |
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/** |
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* Get the default PDO connection options. |
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* |
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* @return array |
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*/ |
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public function getDefaultOptions() |
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{ |
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return $this->options; |
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} |
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/** |
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* Set the default PDO connection options. |
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* |
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* @param array $options |
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* @return void |
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140
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*/ |
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public function setDefaultOptions(array $options) |
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{ |
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$this->options = $options; |
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} |
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145
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} |
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bytic /
database
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