private static AbstractCommand reflectCommandObject()

in odps-console-basic/src/main/java/com/aliyun/openservices/odps/console/utils/CommandParserUtils.java [591:632]

37 lines of code
12 McCabe index (conditional complexity)


  private static AbstractCommand reflectCommandObject(String commandName, Class<?>[] argTypes,
                                                      Object... args) throws ODPSConsoleException {

    Class<?> commandClass = null;
    try {

      commandClass = getClassFromPlugin(commandName);
      Method parseMethod = commandClass.getDeclaredMethod("parse", argTypes);

      Object commandObject = parseMethod.invoke(null, args);

      if (commandObject != null) {
        return (AbstractCommand) commandObject;
      } else {
        return null;
      }
    } catch (SecurityException e) {
      throw new AssertionError("Cannot find the parse method on the command: " + commandName);
    } catch (NoSuchMethodException e) {
      //FOR there's two kind of command,not throw exception
      return null;
    } catch (IllegalArgumentException e) {
      throw new AssertionError("Failed to invoke the parse method on the command:" + commandName);
    } catch (IllegalAccessException e) {
      throw new AssertionError("Failed to invoke the parse method on the command:" + commandName);
    } catch (InvocationTargetException e) {
      if (e.getCause() instanceof ODPSConsoleException) {
        String msg = e.getCause().getMessage();
        if (!StringUtils.isNullOrEmpty(msg) && msg.contains(ODPSConsoleConstants.BAD_COMMAND)
            && commandClass != null) {
          String output = getCommandUsageString(commandClass,
                                                (ExecutionContext) args[args.length - 1]);
          if (output != null) {
            throw new ODPSConsoleException(e.getCause().getMessage() + "\n" + output);
          }
        }
        throw (ODPSConsoleException) e.getCause();
      } else {
        throw new ODPSConsoleException(e.getCause());
      }
    }
  }