return nextIndex >= 0;
    }

    /**
     * Checks whether nextIndex is valid; if so setting nextItem. Stops iterator when either hits
     * putIndex or sees null item.
     */
    private void checkNext() {
      if (nextIndex == putIndex) {
        nextIndex = -1;
        nextItem = null;
      } else {
        nextItem = items[nextIndex];
        if (nextItem == null) nextIndex = -1;
      }
    }

if errorlevel 1 goto x86
set EXECUTABLE=%FESS_HOME%\bin\fess-service-x64.exe
set SERVICE_ID=fess-service-x64
set ARCH=64-bit
goto checkExe

:x86
set EXECUTABLE=%FESS_HOME%\bin\fess-service-x86.exe
set SERVICE_ID=fess-service-x86
set ARCH=32-bit

:checkExe
if EXIST "%EXECUTABLE%" goto okExe
echo fess-service-(x86|x64).exe was not found...

:okExe
if "%LOG_DIR%" == "" set LOG_DIR=%FESS_HOME%\logs