public Object clone() {
DateTimeData dt =
new DateTimeData(
this.year,
this.month,
this.day,
this.hour,
this.minute,
this.second,
this.utc,
this.originalValue,
this.normalized,
this.type);
dt.canonical = this.canonical;
dt.position = position;
dt.timezoneHr = this.timezoneHr;
dt.timezoneMin = this.timezoneMin;
dt.unNormYear = this.unNormYear;
dt.unNormMonth = this.unNormMonth;
dt.unNormDay = this.unNormDay;
dt.unNormHour = this.unNormHour;
dt.unNormMinute = this.unNormMinute;
dt.unNormSecond = this.unNormSecond;
return dt;
}
/**
* Parses time zone: 'Z' or {+,-} followed by hh:mm
*
* @param data
* @param sign
* @exception RuntimeException
*/
protected void getTimeZone(String buffer, DateTimeData data, int sign, int end)
throws RuntimeException {
data.utc = buffer.charAt(sign);
if (buffer.charAt(sign) == 'Z') {
if (end > (++sign)) {
throw new RuntimeException("Error in parsing time zone");
}
return;
}
if (sign <= (end - 6)) {
int negate = buffer.charAt(sign) == '-' ? -1 : 1;
// parse hr
int stop = ++sign + 2;
data.timezoneHr = negate * parseInt(buffer, sign, stop);
if (buffer.charAt(stop++) != ':') {
throw new RuntimeException("Error in parsing time zone");
}
// parse min
data.timezoneMin = negate * parseInt(buffer, stop, stop + 2);
if (stop + 2 != end) {
throw new RuntimeException("Error in parsing time zone");
}
if (data.timezoneHr != 0 || data.timezoneMin != 0) data.normalized = false;
} else {
throw new RuntimeException("Error in parsing time zone");
}
if (DEBUG) {
System.out.println("time[hh]=" + data.timezoneHr + " time[mm]=" + data.timezoneMin);
}
}
private void cloneDate(DateTimeData finalValue, DateTimeData tempDate) {
tempDate.year = finalValue.year;
tempDate.month = finalValue.month;
tempDate.day = finalValue.day;
tempDate.hour = finalValue.hour;
tempDate.minute = finalValue.minute;
tempDate.second = finalValue.second;
tempDate.utc = finalValue.utc;
tempDate.timezoneHr = finalValue.timezoneHr;
tempDate.timezoneMin = finalValue.timezoneMin;
}
/**
* Resets object representation of date/time
*
* @param data date/time object
*/
protected void resetDateObj(DateTimeData data) {
data.year = 0;
data.month = 0;
data.day = 0;
data.hour = 0;
data.minute = 0;
data.second = 0;
data.utc = 0;
data.timezoneHr = 0;
data.timezoneMin = 0;
}
/**
* Compare algorithm described in dateDime (3.2.7). Duration datatype overwrites this method
*
* @param date1 normalized date representation of the first value
* @param date2 normalized date representation of the second value
* @param strict
* @return less, greater, less_equal, greater_equal, equal
*/
protected short compareDates(DateTimeData date1, DateTimeData date2, boolean strict) {
if (date1.utc == date2.utc) {
return compareOrder(date1, date2);
}
short c1, c2;
DateTimeData tempDate = new DateTimeData(null, this);
if (date1.utc == 'Z') {
// compare date1<=date1<=(date2 with time zone -14)
//
cloneDate(date2, tempDate); // clones date1 value to global temporary storage: fTempDate
tempDate.timezoneHr = 14;
tempDate.timezoneMin = 0;
tempDate.utc = '+';
normalize(tempDate);
c1 = compareOrder(date1, tempDate);
if (c1 == LESS_THAN) return c1;
// compare date1>=(date2 with time zone +14)
//
cloneDate(date2, tempDate); // clones date1 value to global temporary storage: tempDate
tempDate.timezoneHr = -14;
tempDate.timezoneMin = 0;
tempDate.utc = '-';
normalize(tempDate);
c2 = compareOrder(date1, tempDate);
if (c2 == GREATER_THAN) return c2;
return INDETERMINATE;
} else if (date2.utc == 'Z') {
// compare (date1 with time zone -14)<=date2
//
cloneDate(date1, tempDate); // clones date1 value to global temporary storage: tempDate
tempDate.timezoneHr = -14;
tempDate.timezoneMin = 0;
tempDate.utc = '-';
if (DEBUG) {
System.out.println("tempDate=" + dateToString(tempDate));
}
normalize(tempDate);
c1 = compareOrder(tempDate, date2);
if (DEBUG) {
System.out.println("date=" + dateToString(date2));
System.out.println("tempDate=" + dateToString(tempDate));
}
if (c1 == LESS_THAN) return c1;
// compare (date1 with time zone +14)<=date2
//
cloneDate(date1, tempDate); // clones date1 value to global temporary storage: tempDate
tempDate.timezoneHr = 14;
tempDate.timezoneMin = 0;
tempDate.utc = '+';
normalize(tempDate);
c2 = compareOrder(tempDate, date2);
if (DEBUG) {
System.out.println("tempDate=" + dateToString(tempDate));
}
if (c2 == GREATER_THAN) return c2;
return INDETERMINATE;
}
return INDETERMINATE;
}
