class ExceptionHandler in Drupal 10

Base Database exception handler class.

This class handles exceptions thrown by the database layer of a PDO-based database connection. Database driver implementations can provide an alternative implementation to support special handling required by that database.

Hierarchy

• class \Drupal\Core\Database\ExceptionHandler

2 files declare their use of ExceptionHandler

ExceptionHandler.php in core/modules/mysql/src/Driver/Database/mysql/ExceptionHandler.php

ExceptionHandler.php in core/tests/fixtures/database_drivers/module/corefake/src/Driver/Database/corefakeWithAllCustomClasses/ExceptionHandler.php

1 string reference to 'ExceptionHandler'

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

Data provider for testGetDriverClass().

File

core/lib/Drupal/Core/Database/ExceptionHandler.php, line 13

Namespace

Drupal\Core\Database

class ExceptionHandler {

  /**
   * Handles exceptions thrown during the preparation of statement objects.
   *
   * @param \Exception $exception
   *   The exception to be handled.
   * @param string $sql
   *   The SQL statement that was requested to be prepared.
   * @param array $options
   *   An associative array of options to control how the database operation is
   *   run.
   *
   * @throws \Drupal\Core\Database\DatabaseExceptionWrapper
   */
  public function handleStatementException(\Exception $exception, string $sql, array $options = []) : void {
    if ($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.
      $message = $exception
        ->getMessage() . ": " . $sql . "; ";
      throw new DatabaseExceptionWrapper($message, 0, $exception);
    }
    throw $exception;
  }

  /**
   * Handles exceptions thrown during execution of statement objects.
   *
   * @param \Exception $exception
   *   The exception to be handled.
   * @param \Drupal\Core\Database\StatementInterface $statement
   *   The statement object requested to be executed.
   * @param array $arguments
   *   An array of arguments for the prepared statement.
   * @param array $options
   *   An associative array of options to control how the database operation is
   *   run.
   *
   * @throws \Drupal\Core\Database\DatabaseExceptionWrapper
   * @throws \Drupal\Core\Database\IntegrityConstraintViolationException
   */
  public function handleExecutionException(\Exception $exception, StatementInterface $statement, array $arguments = [], array $options = []) : void {
    if ($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.
      $message = $exception
        ->getMessage() . ": " . $statement
        ->getQueryString() . "; " . print_r($arguments, TRUE);

      // Match all SQLSTATE 23xxx errors.
      if (substr($exception
        ->getCode(), -6, -3) == '23') {
        throw new IntegrityConstraintViolationException($message, $exception
          ->getCode(), $exception);
      }
      throw new DatabaseExceptionWrapper($message, 0, $exception);
    }
    throw $exception;
  }

}