test.php :

try
{
  $mydb = new DBWrapper(false);
  $mydb->test1("select * from...", null, null);
}
catch ( Exception $ex )
{
  die($ex->getMessage());
}

---------------------
DBWrapper.php

  public function test1($sql, $paramData = null, $paramDataInclConfigs = null)
  {
    try
    {
      $this->test2($sql, $paramData, $paramDataInclConfigs);
    }
    catch ( Exception $ex )
    {
      error_log($this->getConfig('PROJECT_NAME') . ": test1() : caught Exception! Re-throwing...", 0);
      throw $ex;
    }
  }

  private function test2()
  {
    try
    {
      $conn = &$this->getConnection();
      $dbWrapperStmt = new DBWrapperStatement($conn, $sql, $paramData, $paramDataInclConfigs, self::$debug);
    }
    catch ( Exception $ex )
    {
      error_log($this->getConfig('PROJECT_NAME') . ": test2() : caught Exception! Re-throwing...", 0);
      throw $ex;
    }
  }

---------------------
DBWrapperStatement.php

  public function __construct(&$conn, $sql, $paramData = null, $paramConfig = null, $debug = false)
  {
    self::$conn = &$conn;
    self::$sql = trim($sql);
    self::$paramData = $paramData;
    self::$paramConfig = $paramConfig;
    self::$debug = $debug;

    throw new DBWrapperStatementException("TEST!!!", 0, $this->getConfig('PROJECT_NAME'), self::$debug);
   }