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<?php |
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namespace Ronanchilvers\Orm; |
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use Closure; |
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use Evenement\EventEmitter; |
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use Exception; |
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use PDO; |
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use Ronanchilvers\Orm\Finder; |
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use RuntimeException; |
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/** |
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* Facade class that manages the db connection |
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* |
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* @author Ronan Chilvers <[email protected]> |
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*/ |
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class Orm |
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{ |
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/** |
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* @var \PDO|null |
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*/ |
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static protected $connection = null; |
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/** |
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* An event emitter instance |
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* |
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* @var \Evenement\EventEmitter|null |
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*/ |
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static protected $emitter = null; |
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/** |
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* Set the PDO connection to use |
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* |
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* @param \PDO $connection |
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* @author Ronan Chilvers <[email protected]> |
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*/ |
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static public function setConnection(PDO $connection) |
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{ |
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static::$connection = $connection; |
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} |
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/** |
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* Get the current connection |
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* |
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* @return \PDO |
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* @author Ronan Chilvers <[email protected]> |
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*/ |
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static public function getConnection() |
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{ |
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if (is_null(static::$connection)) { |
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throw new RuntimeException('No database connection configured'); |
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} |
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return static::$connection; |
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} |
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/** |
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* Get the event emitter object |
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* |
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* @return \Evenement\EventEmitter |
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* @author Ronan Chilvers <[email protected]> |
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*/ |
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static public function getEmitter() |
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{ |
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if (is_null(static::$emitter)) { |
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static::$emitter = new EventEmitter(); |
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} |
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return static::$emitter; |
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} |
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/** |
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* Automated transaction handling |
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* |
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* @param \Closure |
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* @author Ronan Chilvers <[email protected]> |
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*/ |
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static public function transaction(Closure $closure) |
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{ |
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$connection = static::getConnection(); |
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try { |
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$connection->beginTransaction(); |
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$result = $closure(); |
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if (false === $result) { |
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$connection->rollback(); |
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} else { |
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$connection->commit(); |
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} |
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return $result; |
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} catch (Exception $ex) { |
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$connection->rollback(); |
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throw $ex; |
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} |
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} |
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/** |
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* Get a finder for a given model class |
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* |
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* @param string $modelClass |
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* @return \Ronanchilvers\Orm\Finder |
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* @author Ronan Chilvers <[email protected]> |
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*/ |
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static public function finder($modelClass) |
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{ |
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$finderClass = $modelClass::finder(); |
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if (empty($finderClass)) { |
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$finderClass = Finder::class; |
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} |
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return new $finderClass($modelClass); |
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} |
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} |
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ronanchilvers /
orm
