public static void main()

in core/src/main/java/site/ycsb/CommandLine.java [61:158]
71 lines of code
15 McCabe index (conditional complexity)

  public static void main(String[] args) {

    Properties props = new Properties();
    Properties fileprops = new Properties();

    parseArguments(args, props, fileprops);

    for (Enumeration e = props.propertyNames(); e.hasMoreElements();) {
      String prop = (String) e.nextElement();

      fileprops.setProperty(prop, props.getProperty(prop));
    }

    props = fileprops;

    System.out.println("YCSB Command Line client");
    System.out.println("Type \"help\" for command line help");
    System.out.println("Start with \"-help\" for usage info");

    String table = props.getProperty(CoreWorkload.TABLENAME_PROPERTY, CoreWorkload.TABLENAME_PROPERTY_DEFAULT);

    //create a DB
    String dbname = props.getProperty(Client.DB_PROPERTY, DEFAULT_DB);

    ClassLoader classLoader = CommandLine.class.getClassLoader();

    DB db = null;

    try {
      Class dbclass = classLoader.loadClass(dbname);
      db = (DB) dbclass.newInstance();
    } catch (Exception e) {
      e.printStackTrace();
      System.exit(0);
    }

    db.setProperties(props);
    try {
      db.init();
    } catch (DBException e) {
      e.printStackTrace();
      System.exit(0);
    }

    System.out.println("Connected.");

    //main loop
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

    for (;;) {
      //get user input
      System.out.print("> ");

      String input = null;

      try {
        input = br.readLine();
      } catch (IOException e) {
        e.printStackTrace();
        System.exit(1);
      }

      if (input.compareTo("") == 0) {
        continue;
      }

      if (input.compareTo("help") == 0) {
        help();
        continue;
      }

      if (input.compareTo("quit") == 0) {
        break;
      }

      String[] tokens = input.split(" ");

      long st = System.currentTimeMillis();
      //handle commands
      if (tokens[0].compareTo("table") == 0) {
        handleTable(tokens, table);
      } else if (tokens[0].compareTo("read") == 0) {
        handleRead(tokens, table, db);
      } else if (tokens[0].compareTo("scan") == 0) {
        handleScan(tokens, table, db);
      } else if (tokens[0].compareTo("update") == 0) {
        handleUpdate(tokens, table, db);
      } else if (tokens[0].compareTo("insert") == 0) {
        handleInsert(tokens, table, db);
      } else if (tokens[0].compareTo("delete") == 0) {
        handleDelete(tokens, table, db);
      } else {
        System.out.println("Error: unknown command \"" + tokens[0] + "\"");
      }

      System.out.println((System.currentTimeMillis() - st) + " ms");
    }
  }