public static DropFunctionCommand parse()

in odps-console-resource/src/main/java/com/aliyun/openservices/odps/console/resource/DropFunctionCommand.java [98:154]

43 lines of code
13 McCabe index (conditional complexity)


  public static DropFunctionCommand parse(String commandString, ExecutionContext sessionContext)
      throws ODPSConsoleException {

    // 1. check match
    String[] args = CommandParserUtils.getCommandTokens(commandString);
    if (args.length < 2) {
      return null;
    }
    boolean matchDrop = "DROP".equalsIgnoreCase(args[0]) && "FUNCTION".equalsIgnoreCase(args[1]);
    boolean matchDelete = "DELETE".equalsIgnoreCase(args[0]) && "FUNCTION".equalsIgnoreCase(args[1]);
    if (!matchDelete && !matchDrop) {
      return null;
    }

    // 2. parse
    Coordinate coordinate;
    String project = null;
    String function = null;
    boolean checkExists = false;

    CommandWithOptionP cmdP = new CommandWithOptionP(commandString);
    // get -p
    if (matchDelete) {
      project = cmdP.getProjectValue();
      args = cmdP.getArgs();
    }

    // get functionName and ifExists
    if (args.length == 3) {
      // DROP FUNCTION NAME
      function = args[2];
    } else if (args.length == 5) {
      // DROP FUNCTION IF EXISTS NAME
      boolean matchIfExists = "IF".equalsIgnoreCase(args[2]) &&
                              "EXISTS".equalsIgnoreCase(args[3]);
      if (!matchIfExists) {
        throw new ODPSConsoleException(ODPSConsoleConstants.BAD_COMMAND);
      }
      function = args[4];
      checkExists = true;
    } else {
      throw new ODPSConsoleException(ODPSConsoleConstants.BAD_COMMAND);
    }

    // set project.schema.function
    if (matchDelete) {
      if (function.contains(".")) {
        // DELETE CMD not support pj.schema.function grammar
        throw new ODPSConsoleException(ODPSConsoleConstants.BAD_COMMAND);
      }
      coordinate = Coordinate.getCoordinateOptionP(project, function);
    } else {
      coordinate = Coordinate.getCoordinateABC(function);
    }

    return new DropFunctionCommand(checkExists, coordinate, commandString, sessionContext);
  }