Forgot removing method from Driver interface, documented ExceptionConverterDriver better.

lib/Doctrine/DBAL/Driver.php

@@ -72,11 +72,4 @@ interface Driver
      * @return string The name of the database.
      */
     public function getDatabase(Connection $conn);
-
-    /**
-     * @param \Exception $exception
-     *
-     * @return int
-     */
-    public function convertExceptionCode(\Exception $exception);
 }

lib/Doctrine/DBAL/Driver/ExceptionConverterDriver.php

@@ -29,6 +29,12 @@ use Exception;
 interface ExceptionConverterDriver
 {
     /**
+     * Method converts driver exceptions to standard error codes from
+     * {@see Doctrine\DBAL\DBALException}.
+     *
+     * The DBALException error codes are returned from this method
+     * and the DBAL decides how to convert them into a common exception.
+     *
      * @param \Exception $exception
      *
      * @return int