private int embeddedConnect() {
    if (!execCommandWithPrefix("!connect " + Utils.URL_PREFIX + " '' ''")) {
      return ERRNO_OTHER;
    } else {
      return ERRNO_OK;
    }
  }
Start accepting input from stdin, and dispatch it
to the appropriate {@link CommandHandler} until the
global variable <code>exit</code> is true.
beeline/src/java/org/apache/hive/beeline/BeeLine.java