/**
* 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;
}
private DateTimeData addDuration(DateTimeData date, DateTimeData addto, DateTimeData duration) {
// REVISIT: some code could be shared between normalize() and this method,
// however is it worth moving it? The structures are different...
//
resetDateObj(duration);
// add months (may be modified additionaly below)
int temp = addto.month + date.month;
duration.month = modulo(temp, 1, 13);
int carry = fQuotient(temp, 1, 13);
// add years (may be modified additionaly below)
duration.year = addto.year + date.year + carry;
// add seconds
double dtemp = addto.second + date.second;
carry = (int) Math.floor(dtemp / 60);
duration.second = dtemp - carry * 60;
// add minutes
temp = addto.minute + date.minute + carry;
carry = fQuotient(temp, 60);
duration.minute = mod(temp, 60, carry);
// add hours
temp = addto.hour + date.hour + carry;
carry = fQuotient(temp, 24);
duration.hour = mod(temp, 24, carry);
duration.day = addto.day + date.day + carry;
while (true) {
temp = maxDayInMonthFor(duration.year, duration.month);
if (duration.day < 1) { // original duration was negative
duration.day = duration.day + maxDayInMonthFor(duration.year, duration.month - 1);
carry = -1;
} else if (duration.day > temp) {
duration.day = duration.day - temp;
carry = 1;
} else {
break;
}
temp = duration.month + carry;
duration.month = modulo(temp, 1, 13);
duration.year = duration.year + fQuotient(temp, 1, 13);
}
duration.utc = 'Z';
return duration;
}
/**
* If timezone present - normalize dateTime [E Adding durations to dateTimes]
*
* @param date CCYY-MM-DDThh:mm:ss+03
*/
protected void normalize(DateTimeData date) {
// REVISIT: we have common code in addDuration() for durations
// should consider reorganizing it.
//
// add minutes (from time zone)
int negate = -1;
if (DEBUG) {
System.out.println("==>date.minute" + date.minute);
System.out.println("==>date.timezoneMin" + date.timezoneMin);
}
int temp = date.minute + negate * date.timezoneMin;
int carry = fQuotient(temp, 60);
date.minute = mod(temp, 60, carry);
if (DEBUG) {
System.out.println("==>carry: " + carry);
}
// add hours
temp = date.hour + negate * date.timezoneHr + carry;
carry = fQuotient(temp, 24);
date.hour = mod(temp, 24, carry);
if (DEBUG) {
System.out.println("==>date.hour" + date.hour);
System.out.println("==>carry: " + carry);
}
date.day = date.day + carry;
while (true) {
temp = maxDayInMonthFor(date.year, date.month);
if (date.day < 1) {
date.day = date.day + maxDayInMonthFor(date.year, date.month - 1);
carry = -1;
} else if (date.day > temp) {
date.day = date.day - temp;
carry = 1;
} else {
break;
}
temp = date.month + carry;
date.month = modulo(temp, 1, 13);
date.year = date.year + fQuotient(temp, 1, 13);
if (date.year == 0 && !Constants.SCHEMA_1_1_SUPPORT) {
date.year = (date.timezoneHr < 0 || date.timezoneMin < 0) ? 1 : -1;
}
}
date.utc = 'Z';
}
/**
* 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;
}
/**
* Parses, validates and computes normalized version of duration object
*
* @param str The lexical representation of duration object PnYn MnDTnH nMnS
* @param durationType
* @return normalized date representation
* @exception SchemaDateTimeException Invalid lexical representation
*/
protected DateTimeData parse(String str, int durationType) throws SchemaDateTimeException {
int len = str.length();
DateTimeData date = new DateTimeData(str, this);
int start = 0;
char c = str.charAt(start++);
if (c != 'P' && c != '-') {
throw new SchemaDateTimeException();
} else {
date.utc = (c == '-') ? '-' : 0;
if (c == '-' && str.charAt(start++) != 'P') {
throw new SchemaDateTimeException();
}
}
int negate = 1;
// negative duration
if (date.utc == '-') {
negate = -1;
}
// at least one number and designator must be seen after P
boolean designator = false;
int endDate = indexOf(str, start, len, 'T');
if (endDate == -1) {
endDate = len;
} else if (durationType == YEARMONTHDURATION_TYPE) {
throw new SchemaDateTimeException();
}
// find 'Y'
int end = indexOf(str, start, endDate, 'Y');
if (end != -1) {
if (durationType == DAYTIMEDURATION_TYPE) {
throw new SchemaDateTimeException();
}
// scan year
date.year = negate * parseInt(str, start, end);
start = end + 1;
designator = true;
}
end = indexOf(str, start, endDate, 'M');
if (end != -1) {
if (durationType == DAYTIMEDURATION_TYPE) {
throw new SchemaDateTimeException();
}
// scan month
date.month = negate * parseInt(str, start, end);
start = end + 1;
designator = true;
}
end = indexOf(str, start, endDate, 'D');
if (end != -1) {
if (durationType == YEARMONTHDURATION_TYPE) {
throw new SchemaDateTimeException();
}
// scan day
date.day = negate * parseInt(str, start, end);
start = end + 1;
designator = true;
}
if (len == endDate && start != len) {
throw new SchemaDateTimeException();
}
if (len != endDate) {
// scan hours, minutes, seconds
// REVISIT: can any item include a decimal fraction or only seconds?
//
end = indexOf(str, ++start, len, 'H');
if (end != -1) {
// scan hours
date.hour = negate * parseInt(str, start, end);
start = end + 1;
designator = true;
}
end = indexOf(str, start, len, 'M');
if (end != -1) {
// scan min
date.minute = negate * parseInt(str, start, end);
start = end + 1;
designator = true;
}
end = indexOf(str, start, len, 'S');
if (end != -1) {
// scan seconds
date.second = negate * parseSecond(str, start, end);
start = end + 1;
designator = true;
}
// no additional data shouls appear after last item
// P1Y1M1DT is illigal value as well
if (start != len || str.charAt(--start) == 'T') {
throw new SchemaDateTimeException();
}
}
if (!designator) {
throw new SchemaDateTimeException();
}
return date;
}
