class ExceptionHandler in Drupal 9

MySql database exception handler class.

Hierarchy

• class \Drupal\Core\Database\ExceptionHandler
  • class \Drupal\Core\Database\Driver\mysql\ExceptionHandler

3 string references to 'ExceptionHandler'

Connection::exceptionHandler in core/lib/Drupal/Core/Database/Connection.php

Returns the database exceptions handler.

Connection::getDriverClass in core/lib/Drupal/Core/Database/Connection.php

Gets the driver-specific override class if any for the specified class.

ConnectionTest::providerGetDriverClass in core/tests/Drupal/Tests/Core/Database/ConnectionTest.php

Data provider for testGetDriverClass().

File

core/lib/Drupal/Core/Database/Driver/mysql/ExceptionHandler.php, line 14

Namespace

Drupal\Core\Database\Driver\mysql

class ExceptionHandler extends BaseExceptionHandler {

  /**
   * {@inheritdoc}
   */
  public function handleExecutionException(\Exception $exception, StatementInterface $statement, array $arguments = [], array $options = []) : void {
    if (array_key_exists('throw_exception', $options)) {
      @trigger_error('Passing a \'throw_exception\' option to ' . __METHOD__ . ' is deprecated in drupal:9.2.0 and is removed in drupal:10.0.0. Always catch exceptions. See https://www.drupal.org/node/3201187', E_USER_DEPRECATED);
      if (!$options['throw_exception']) {
        return;
      }
    }
    if ($exception instanceof \PDOException) {

      // Wrap the exception in another exception, because PHP does not allow
      // overriding Exception::getMessage(). Its message is the extra database
      // debug information.
      $code = is_int($exception
        ->getCode()) ? $exception
        ->getCode() : 0;

      // If a max_allowed_packet error occurs the message length is truncated.
      // This should prevent the error from recurring if the exception is logged
      // to the database using dblog or the like.
      if (($exception->errorInfo[1] ?? NULL) === 1153) {
        $message = Unicode::truncateBytes($exception
          ->getMessage(), Connection::MIN_MAX_ALLOWED_PACKET);
        throw new DatabaseExceptionWrapper($message, $code, $exception);
      }
      $message = $exception
        ->getMessage() . ": " . $statement
        ->getQueryString() . "; " . print_r($arguments, TRUE);

      // SQLSTATE 23xxx errors indicate an integrity constraint violation. Also,
      // in case of attempted INSERT of a record with an undefined column and no
      // default value indicated in schema, MySql returns a 1364 error code.
      if (substr($exception
        ->getCode(), -6, -3) == '23' || ($exception->errorInfo[1] ?? NULL) === 1364) {
        throw new IntegrityConstraintViolationException($message, $code, $exception);
      }
      throw new DatabaseExceptionWrapper($message, 0, $exception);
    }
    throw $exception;
  }

}

Members

Name	Modifiers	Type	Description	Overrides
ExceptionHandler::handleExecutionException	public	function	Handles exceptions thrown during execution of statement objects. Overrides ExceptionHandler::handleExecutionException
ExceptionHandler::handleStatementException	public	function	Handles exceptions thrown during the preparation of statement objects.