tds/src/main/java/thredds/server/ncss/validation/TimeParamsValidator.java
private boolean hasValidDateRange(String time_start, String time_end, String time_duration) {
    // no range
    if ((null == time_start) && (null == time_end) && (null == time_duration))
      return false;

    if ((null != time_start) && (null != time_end))
      return true;

    if ((null != time_start) && (null != time_duration))
      return true;

    if ((null != time_end) && (null != time_duration))
      return true;

    // misformed range
    // errs.append("Must have 2 of 3 parameters: time_start, time_end, time_duration\n");
    return false;
  }
private boolean hasValidDateRange(String time_start, String time_end, String time_duration) {
    // no range
    if ((null == time_start) && (null == time_end) && (null == time_duration))
      return false;

    if ((null != time_start) && (null != time_end))
      return true;

    if ((null != time_start) && (null != time_duration))
      return true;

    if ((null != time_end) && (null != time_duration))
      return true;

    // misformed range
    // errs.append("Must have 2 of 3 parameters: time_start, time_end, time_duration\n");
    return false;
  }
Determine if a valid date range was specified

@return true if there is a valid date range, false if not.