/*
* Copyright 2004-2023 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.util;
import static org.h2.util.DateTimeUtils.NANOS_PER_DAY;
import static org.h2.util.DateTimeUtils.NANOS_PER_HOUR;
import static org.h2.util.DateTimeUtils.NANOS_PER_MINUTE;
import static org.h2.util.DateTimeUtils.NANOS_PER_SECOND;
import java.math.BigInteger;
import org.h2.api.ErrorCode;
import org.h2.api.IntervalQualifier;
import org.h2.message.DbException;
import org.h2.value.ValueInterval;
/**
* This utility class contains interval conversion functions.
*/
public class IntervalUtils {
private static final BigInteger NANOS_PER_SECOND_BI = BigInteger.valueOf(NANOS_PER_SECOND);
private static final BigInteger NANOS_PER_MINUTE_BI = BigInteger.valueOf(NANOS_PER_MINUTE);
private static final BigInteger NANOS_PER_HOUR_BI = BigInteger.valueOf(NANOS_PER_HOUR);
/**
* The number of nanoseconds per day as BigInteger.
*/
public static final BigInteger NANOS_PER_DAY_BI = BigInteger.valueOf(NANOS_PER_DAY);
private static final BigInteger MONTHS_PER_YEAR_BI = BigInteger.valueOf(12);
private static final BigInteger HOURS_PER_DAY_BI = BigInteger.valueOf(24);
private static final BigInteger MINUTES_PER_DAY_BI = BigInteger.valueOf(24 * 60);
private static final BigInteger MINUTES_PER_HOUR_BI = BigInteger.valueOf(60);
private static final BigInteger LEADING_MIN = BigInteger.valueOf(-999_999_999_999_999_999L);
private static final BigInteger LEADING_MAX = BigInteger.valueOf(999_999_999_999_999_999L);
private IntervalUtils() {
// utility class
}
/**
* Parses the specified string as {@code INTERVAL} value.
*
* @param qualifier
* the default qualifier to use if string does not have one
* @param s
* the string with type information to parse
* @return the interval value. Type of value can be different from the
* specified qualifier.
*/
public static ValueInterval parseFormattedInterval(IntervalQualifier qualifier, String s) {
int i = 0;
i = skipWS(s, i);
if (!s.regionMatches(true, i, "INTERVAL", 0, 8)) {
return parseInterval(qualifier, false, s);
}
i = skipWS(s, i + 8);
boolean negative = false;
char ch = s.charAt(i);
if (ch == '-') {
negative = true;
i = skipWS(s, i + 1);
ch = s.charAt(i);
} else if (ch == '+') {
i = skipWS(s, i + 1);
ch = s.charAt(i);
}
if (ch != '\'') {
throw new IllegalArgumentException(s);
}
int start = ++i;
int l = s.length();
for (;;) {
if (i == l) {
throw new IllegalArgumentException(s);
}
if (s.charAt(i) == '\'') {
break;
}
i++;
}
String v = s.substring(start, i);
i = skipWS(s, i + 1);
if (s.regionMatches(true, i, "YEAR", 0, 4)) {
i += 4;
int j = skipWSEnd(s, i);
if (j == l) {
return parseInterval(IntervalQualifier.YEAR, negative, v);
}
if (j > i && s.regionMatches(true, j, "TO", 0, 2)) {
j += 2;
i = skipWS(s, j);
if (i > j && s.regionMatches(true, i, "MONTH", 0, 5)) {
if (skipWSEnd(s, i + 5) == l) {
return parseInterval(IntervalQualifier.YEAR_TO_MONTH, negative, v);
}
}
}
} else if (s.regionMatches(true, i, "MONTH", 0, 5)) {
if (skipWSEnd(s, i + 5) == l) {
return parseInterval(IntervalQualifier.MONTH, negative, v);
}
}
if (s.regionMatches(true, i, "DAY", 0, 3)) {
i += 3;
int j = skipWSEnd(s, i);
if (j == l) {
return parseInterval(IntervalQualifier.DAY, negative, v);
}
if (j > i && s.regionMatches(true, j, "TO", 0, 2)) {
j += 2;
i = skipWS(s, j);
if (i > j) {
if (s.regionMatches(true, i, "HOUR", 0, 4)) {
if (skipWSEnd(s, i + 4) == l) {
return parseInterval(IntervalQualifier.DAY_TO_HOUR, negative, v);
}
} else if (s.regionMatches(true, i, "MINUTE", 0, 6)) {
if (skipWSEnd(s, i + 6) == l) {
return parseInterval(IntervalQualifier.DAY_TO_MINUTE, negative, v);
}
} else if (s.regionMatches(true, i, "SECOND", 0, 6)) {
if (skipWSEnd(s, i + 6) == l) {
return parseInterval(IntervalQualifier.DAY_TO_SECOND, negative, v);
}
}
}
}
}
if (s.regionMatches(true, i, "HOUR", 0, 4)) {
i += 4;
int j = skipWSEnd(s, i);
if (j == l) {
return parseInterval(IntervalQualifier.HOUR, negative, v);
}
if (j > i && s.regionMatches(true, j, "TO", 0, 2)) {
j += 2;
i = skipWS(s, j);
if (i > j) {
if (s.regionMatches(true, i, "MINUTE", 0, 6)) {
if (skipWSEnd(s, i + 6) == l) {
return parseInterval(IntervalQualifier.HOUR_TO_MINUTE, negative, v);
}
} else if (s.regionMatches(true, i, "SECOND", 0, 6)) {
if (skipWSEnd(s, i + 6) == l) {
return parseInterval(IntervalQualifier.HOUR_TO_SECOND, negative, v);
}
}
}
}
}
if (s.regionMatches(true, i, "MINUTE", 0, 6)) {
i += 6;
int j = skipWSEnd(s, i);
if (j == l) {
return parseInterval(IntervalQualifier.MINUTE, negative, v);
}
if (j > i && s.regionMatches(true, j, "TO", 0, 2)) {
j += 2;
i = skipWS(s, j);
if (i > j && s.regionMatches(true, i, "SECOND", 0, 6)) {
if (skipWSEnd(s, i + 6) == l) {
return parseInterval(IntervalQualifier.MINUTE_TO_SECOND, negative, v);
}
}
}
}
if (s.regionMatches(true, i, "SECOND", 0, 6)) {
if (skipWSEnd(s, i + 6) == l) {
return parseInterval(IntervalQualifier.SECOND, negative, v);
}
}
throw new IllegalArgumentException(s);
}
private static int skipWS(String s, int i) {
for (int l = s.length();; i++) {
if (i == l) {
throw new IllegalArgumentException(s);
}
if (!Character.isWhitespace(s.charAt(i))) {
return i;
}
}
}
private static int skipWSEnd(String s, int i) {
for (int l = s.length();; i++) {
if (i == l) {
return i;
}
if (!Character.isWhitespace(s.charAt(i))) {
return i;
}
}
}
/**
* Parses the specified string as {@code INTERVAL} value.
*
* @param qualifier
* the qualifier of interval
* @param negative
* whether the interval is negative
* @param s
* the string to parse
* @return the interval value
*/
public static ValueInterval parseInterval(IntervalQualifier qualifier, boolean negative, String s) {
long leading, remaining;
switch (qualifier) {
case YEAR:
case MONTH:
case DAY:
case HOUR:
case MINUTE:
leading = parseIntervalLeading(s, 0, s.length(), negative);
remaining = 0;
break;
case SECOND: {
int dot = s.indexOf('.');
if (dot < 0) {
leading = parseIntervalLeading(s, 0, s.length(), negative);
remaining = 0;
} else {
leading = parseIntervalLeading(s, 0, dot, negative);
remaining = DateTimeUtils.parseNanos(s, dot + 1, s.length());
}
break;
}
case YEAR_TO_MONTH:
return parseInterval2(qualifier, s, '-', 11, negative);
case DAY_TO_HOUR:
return parseInterval2(qualifier, s, ' ', 23, negative);
case DAY_TO_MINUTE: {
int space = s.indexOf(' ');
if (space < 0) {
leading = parseIntervalLeading(s, 0, s.length(), negative);
remaining = 0;
} else {
leading = parseIntervalLeading(s, 0, space, negative);
int colon = s.indexOf(':', space + 1);
if (colon < 0) {
remaining = parseIntervalRemaining(s, space + 1, s.length(), 23) * 60;
} else {
remaining = parseIntervalRemaining(s, space + 1, colon, 23) * 60
+ parseIntervalRemaining(s, colon + 1, s.length(), 59);
}
}
break;
}
case DAY_TO_SECOND: {
int space = s.indexOf(' ');
if (space < 0) {
leading = parseIntervalLeading(s, 0, s.length(), negative);
remaining = 0;
} else {
leading = parseIntervalLeading(s, 0, space, negative);
int colon = s.indexOf(':', space + 1);
if (colon < 0) {
remaining = parseIntervalRemaining(s, space + 1, s.length(), 23) * NANOS_PER_HOUR;
} else {
int colon2 = s.indexOf(':', colon + 1);
if (colon2 < 0) {
remaining = parseIntervalRemaining(s, space + 1, colon, 23) * NANOS_PER_HOUR
+ parseIntervalRemaining(s, colon + 1, s.length(), 59) * NANOS_PER_MINUTE;
} else {
remaining = parseIntervalRemaining(s, space + 1, colon, 23) * NANOS_PER_HOUR
+ parseIntervalRemaining(s, colon + 1, colon2, 59) * NANOS_PER_MINUTE
+ parseIntervalRemainingSeconds(s, colon2 + 1);
}
}
}
break;
}
case HOUR_TO_MINUTE:
return parseInterval2(qualifier, s, ':', 59, negative);
case HOUR_TO_SECOND: {
int colon = s.indexOf(':');
if (colon < 0) {
leading = parseIntervalLeading(s, 0, s.length(), negative);
remaining = 0;
} else {
leading = parseIntervalLeading(s, 0, colon, negative);
int colon2 = s.indexOf(':', colon + 1);
if (colon2 < 0) {
remaining = parseIntervalRemaining(s, colon + 1, s.length(), 59) * NANOS_PER_MINUTE;
} else {
remaining = parseIntervalRemaining(s, colon + 1, colon2, 59) * NANOS_PER_MINUTE
+ parseIntervalRemainingSeconds(s, colon2 + 1);
}
}
break;
}
case MINUTE_TO_SECOND: {
int dash = s.indexOf(':');
if (dash < 0) {
leading = parseIntervalLeading(s, 0, s.length(), negative);
remaining = 0;
} else {
leading = parseIntervalLeading(s, 0, dash, negative);
remaining = parseIntervalRemainingSeconds(s, dash + 1);
}
break;
}
default:
throw new IllegalArgumentException();
}
negative = leading < 0;
if (negative) {
if (leading != Long.MIN_VALUE) {
leading = -leading;
} else {
leading = 0;
}
}
return ValueInterval.from(qualifier, negative, leading, remaining);
}
private static ValueInterval parseInterval2(IntervalQualifier qualifier, String s,
char ch, int max, boolean negative) {
long leading;
long remaining;
int dash = s.indexOf(ch, 1);
if (dash < 0) {
leading = parseIntervalLeading(s, 0, s.length(), negative);
remaining = 0;
} else {
leading = parseIntervalLeading(s, 0, dash, negative);
remaining = parseIntervalRemaining(s, dash + 1, s.length(), max);
}
negative = leading < 0;
if (negative) {
if (leading != Long.MIN_VALUE) {
leading = -leading;
} else {
leading = 0;
}
}
return ValueInterval.from(qualifier, negative, leading, remaining);
}
private static long parseIntervalLeading(String s, int start, int end, boolean negative) {
long leading = Long.parseLong(s.substring(start, end));
if (leading == 0) {
return negative ^ s.charAt(start) == '-' ? Long.MIN_VALUE : 0;
}
return negative ? -leading : leading;
}
private static long parseIntervalRemaining(String s, int start, int end, int max) {
int v = StringUtils.parseUInt31(s, start, end);
if (v > max) {
throw new IllegalArgumentException(s);
}
return v;
}
private static long parseIntervalRemainingSeconds(String s, int start) {
int seconds, nanos;
int dot = s.indexOf('.', start + 1);
if (dot < 0) {
seconds = StringUtils.parseUInt31(s, start, s.length());
nanos = 0;
} else {
seconds = StringUtils.parseUInt31(s, start, dot);
nanos = DateTimeUtils.parseNanos(s, dot + 1, s.length());
}
if (seconds > 59) {
throw new IllegalArgumentException(s);
}
return seconds * NANOS_PER_SECOND + nanos;
}
/**
* Formats interval as a string and appends it to a specified string
* builder.
*
* @param buff
* string builder to append to
* @param qualifier
* qualifier of the interval
* @param negative
* whether interval is negative
* @param leading
* the value of leading field
* @param remaining
* the value of all remaining fields
* @return the specified string builder
*/
public static StringBuilder appendInterval(StringBuilder buff, IntervalQualifier qualifier, boolean negative,
long leading, long remaining) {
buff.append("INTERVAL '");
if (negative) {
buff.append('-');
}
switch (qualifier) {
case YEAR:
case MONTH:
case DAY:
case HOUR:
case MINUTE:
buff.append(leading);
break;
case SECOND:
DateTimeUtils.appendNanos(buff.append(leading), (int) remaining);
break;
case YEAR_TO_MONTH:
buff.append(leading).append('-').append(remaining);
break;
case DAY_TO_HOUR:
buff.append(leading).append(' ');
StringUtils.appendTwoDigits(buff, (int) remaining);
break;
case DAY_TO_MINUTE: {
buff.append(leading).append(' ');
int r = (int) remaining;
StringUtils.appendTwoDigits(buff, r / 60).append(':');
StringUtils.appendTwoDigits(buff, r % 60);
break;
}
case DAY_TO_SECOND: {
long nanos = remaining % NANOS_PER_MINUTE;
int r = (int) (remaining / NANOS_PER_MINUTE);
buff.append(leading).append(' ');
StringUtils.appendTwoDigits(buff, r / 60).append(':');
StringUtils.appendTwoDigits(buff, r % 60).append(':');
StringUtils.appendTwoDigits(buff, (int) (nanos / NANOS_PER_SECOND));
DateTimeUtils.appendNanos(buff, (int) (nanos % NANOS_PER_SECOND));
break;
}
case HOUR_TO_MINUTE:
buff.append(leading).append(':');
StringUtils.appendTwoDigits(buff, (int) remaining);
break;
case HOUR_TO_SECOND: {
buff.append(leading).append(':');
StringUtils.appendTwoDigits(buff, (int) (remaining / NANOS_PER_MINUTE)).append(':');
long s = remaining % NANOS_PER_MINUTE;
StringUtils.appendTwoDigits(buff, (int) (s / NANOS_PER_SECOND));
DateTimeUtils.appendNanos(buff, (int) (s % NANOS_PER_SECOND));
break;
}
case MINUTE_TO_SECOND:
buff.append(leading).append(':');
StringUtils.appendTwoDigits(buff, (int) (remaining / NANOS_PER_SECOND));
DateTimeUtils.appendNanos(buff, (int) (remaining % NANOS_PER_SECOND));
break;
}
return buff.append("' ").append(qualifier);
}
/**
* Converts interval value to an absolute value.
*
* @param interval
* the interval value
* @return absolute value in months for year-month intervals, in nanoseconds
* for day-time intervals
*/
public static BigInteger intervalToAbsolute(ValueInterval interval) {
BigInteger r;
switch (interval.getQualifier()) {
case YEAR:
r = BigInteger.valueOf(interval.getLeading()).multiply(MONTHS_PER_YEAR_BI);
break;
case MONTH:
r = BigInteger.valueOf(interval.getLeading());
break;
case DAY:
r = BigInteger.valueOf(interval.getLeading()).multiply(NANOS_PER_DAY_BI);
break;
case HOUR:
r = BigInteger.valueOf(interval.getLeading()).multiply(NANOS_PER_HOUR_BI);
break;
case MINUTE:
r = BigInteger.valueOf(interval.getLeading()).multiply(NANOS_PER_MINUTE_BI);
break;
case SECOND:
r = intervalToAbsolute(interval, NANOS_PER_SECOND_BI);
break;
case YEAR_TO_MONTH:
r = intervalToAbsolute(interval, MONTHS_PER_YEAR_BI);
break;
case DAY_TO_HOUR:
r = intervalToAbsolute(interval, HOURS_PER_DAY_BI, NANOS_PER_HOUR_BI);
break;
case DAY_TO_MINUTE:
r = intervalToAbsolute(interval, MINUTES_PER_DAY_BI, NANOS_PER_MINUTE_BI);
break;
case DAY_TO_SECOND:
r = intervalToAbsolute(interval, NANOS_PER_DAY_BI);
break;
case HOUR_TO_MINUTE:
r = intervalToAbsolute(interval, MINUTES_PER_HOUR_BI, NANOS_PER_MINUTE_BI);
break;
case HOUR_TO_SECOND:
r = intervalToAbsolute(interval, NANOS_PER_HOUR_BI);
break;
case MINUTE_TO_SECOND:
r = intervalToAbsolute(interval, NANOS_PER_MINUTE_BI);
break;
default:
throw new IllegalArgumentException();
}
return interval.isNegative() ? r.negate() : r;
}
private static BigInteger intervalToAbsolute(ValueInterval interval, BigInteger multiplier,
BigInteger totalMultiplier) {
return intervalToAbsolute(interval, multiplier).multiply(totalMultiplier);
}
private static BigInteger intervalToAbsolute(ValueInterval interval, BigInteger multiplier) {
return BigInteger.valueOf(interval.getLeading()).multiply(multiplier)
.add(BigInteger.valueOf(interval.getRemaining()));
}
/**
* Converts absolute value to an interval value.
*
* @param qualifier
* the qualifier of interval
* @param absolute
* absolute value in months for year-month intervals, in
* nanoseconds for day-time intervals
* @return the interval value
*/
public static ValueInterval intervalFromAbsolute(IntervalQualifier qualifier, BigInteger absolute) {
switch (qualifier) {
case YEAR:
return ValueInterval.from(qualifier, absolute.signum() < 0,
leadingExact(absolute.divide(MONTHS_PER_YEAR_BI)), 0);
case MONTH:
return ValueInterval.from(qualifier, absolute.signum() < 0, leadingExact(absolute), 0);
case DAY:
return ValueInterval.from(qualifier, absolute.signum() < 0,
leadingExact(absolute.divide(NANOS_PER_DAY_BI)), 0);
case HOUR:
return ValueInterval.from(qualifier, absolute.signum() < 0,
leadingExact(absolute.divide(NANOS_PER_HOUR_BI)), 0);
case MINUTE:
return ValueInterval.from(qualifier, absolute.signum() < 0,
leadingExact(absolute.divide(NANOS_PER_MINUTE_BI)), 0);
case SECOND:
return intervalFromAbsolute(qualifier, absolute, NANOS_PER_SECOND_BI);
case YEAR_TO_MONTH:
return intervalFromAbsolute(qualifier, absolute, MONTHS_PER_YEAR_BI);
case DAY_TO_HOUR:
return intervalFromAbsolute(qualifier, absolute.divide(NANOS_PER_HOUR_BI), HOURS_PER_DAY_BI);
case DAY_TO_MINUTE:
return intervalFromAbsolute(qualifier, absolute.divide(NANOS_PER_MINUTE_BI), MINUTES_PER_DAY_BI);
case DAY_TO_SECOND:
return intervalFromAbsolute(qualifier, absolute, NANOS_PER_DAY_BI);
case HOUR_TO_MINUTE:
return intervalFromAbsolute(qualifier, absolute.divide(NANOS_PER_MINUTE_BI), MINUTES_PER_HOUR_BI);
case HOUR_TO_SECOND:
return intervalFromAbsolute(qualifier, absolute, NANOS_PER_HOUR_BI);
case MINUTE_TO_SECOND:
return intervalFromAbsolute(qualifier, absolute, NANOS_PER_MINUTE_BI);
default:
throw new IllegalArgumentException();
}
}
private static ValueInterval intervalFromAbsolute(IntervalQualifier qualifier, BigInteger absolute,
BigInteger divisor) {
BigInteger[] dr = absolute.divideAndRemainder(divisor);
return ValueInterval.from(qualifier, absolute.signum() < 0, leadingExact(dr[0]), Math.abs(dr[1].longValue()));
}
private static long leadingExact(BigInteger absolute) {
if (absolute.compareTo(LEADING_MAX) > 0 || absolute.compareTo(LEADING_MIN) < 0) {
throw DbException.get(ErrorCode.NUMERIC_VALUE_OUT_OF_RANGE_1, absolute.toString());
}
return Math.abs(absolute.longValue());
}
/**
* Ensures that all fields in interval are valid.
*
* @param qualifier
* qualifier
* @param negative
* whether interval is negative
* @param leading
* value of leading field
* @param remaining
* values of all remaining fields
* @return fixed value of negative field
*/
public static boolean validateInterval(IntervalQualifier qualifier, boolean negative, long leading,
long remaining) {
if (qualifier == null) {
throw new NullPointerException();
}
if (leading == 0L && remaining == 0L) {
return false;
}
// Upper bound for remaining value (exclusive)
long bound;
switch (qualifier) {
case YEAR:
case MONTH:
case DAY:
case HOUR:
case MINUTE:
bound = 1;
break;
case SECOND:
bound = NANOS_PER_SECOND;
break;
case YEAR_TO_MONTH:
bound = 12;
break;
case DAY_TO_HOUR:
bound = 24;
break;
case DAY_TO_MINUTE:
bound = 24 * 60;
break;
case DAY_TO_SECOND:
bound = NANOS_PER_DAY;
break;
case HOUR_TO_MINUTE:
bound = 60;
break;
case HOUR_TO_SECOND:
bound = NANOS_PER_HOUR;
break;
case MINUTE_TO_SECOND:
bound = NANOS_PER_MINUTE;
break;
default:
throw DbException.getInvalidValueException("interval", qualifier);
}
if (leading < 0L || leading >= 1_000_000_000_000_000_000L) {
throw DbException.getInvalidValueException("interval", Long.toString(leading));
}
if (remaining < 0L || remaining >= bound) {
throw DbException.getInvalidValueException("interval", Long.toString(remaining));
}
return negative;
}
/**
* Returns years value of interval, if any.
*
* @param qualifier
* qualifier
* @param negative
* whether interval is negative
* @param leading
* value of leading field
* @param remaining
* values of all remaining fields
* @return years, or 0
*/
public static long yearsFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining) {
if (qualifier == IntervalQualifier.YEAR || qualifier == IntervalQualifier.YEAR_TO_MONTH) {
long v = leading;
if (negative) {
v = -v;
}
return v;
} else {
return 0;
}
}
/**
* Returns months value of interval, if any.
*
* @param qualifier
* qualifier
* @param negative
* whether interval is negative
* @param leading
* value of leading field
* @param remaining
* values of all remaining fields
* @return months, or 0
*/
public static long monthsFromInterval(IntervalQualifier qualifier, boolean negative, long leading, //
long remaining) {
long v;
if (qualifier == IntervalQualifier.MONTH) {
v = leading;
} else if (qualifier == IntervalQualifier.YEAR_TO_MONTH) {
v = remaining;
} else {
return 0;
}
if (negative) {
v = -v;
}
return v;
}
/**
* Returns days value of interval, if any.
*
* @param qualifier
* qualifier
* @param negative
* whether interval is negative
* @param leading
* value of leading field
* @param remaining
* values of all remaining fields
* @return days, or 0
*/
public static long daysFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining) {
switch (qualifier) {
case DAY:
case DAY_TO_HOUR:
case DAY_TO_MINUTE:
case DAY_TO_SECOND:
long v = leading;
if (negative) {
v = -v;
}
return v;
default:
return 0;
}
}
/**
* Returns hours value of interval, if any.
*
* @param qualifier
* qualifier
* @param negative
* whether interval is negative
* @param leading
* value of leading field
* @param remaining
* values of all remaining fields
* @return hours, or 0
*/
public static long hoursFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining) {
long v;
switch (qualifier) {
case HOUR:
case HOUR_TO_MINUTE:
case HOUR_TO_SECOND:
v = leading;
break;
case DAY_TO_HOUR:
v = remaining;
break;
case DAY_TO_MINUTE:
v = remaining / 60;
break;
case DAY_TO_SECOND:
v = remaining / NANOS_PER_HOUR;
break;
default:
return 0;
}
if (negative) {
v = -v;
}
return v;
}
/**
* Returns minutes value of interval, if any.
*
* @param qualifier
* qualifier
* @param negative
* whether interval is negative
* @param leading
* value of leading field
* @param remaining
* values of all remaining fields
* @return minutes, or 0
*/
public static long minutesFromInterval(IntervalQualifier qualifier, boolean negative, long leading,
long remaining) {
long v;
switch (qualifier) {
case MINUTE:
case MINUTE_TO_SECOND:
v = leading;
break;
case DAY_TO_MINUTE:
v = remaining % 60;
break;
case DAY_TO_SECOND:
v = remaining / NANOS_PER_MINUTE % 60;
break;
case HOUR_TO_MINUTE:
v = remaining;
break;
case HOUR_TO_SECOND:
v = remaining / NANOS_PER_MINUTE;
break;
default:
return 0;
}
if (negative) {
v = -v;
}
return v;
}
/**
* Returns nanoseconds value of interval, if any.
*
* @param qualifier
* qualifier
* @param negative
* whether interval is negative
* @param leading
* value of leading field
* @param remaining
* values of all remaining fields
* @return nanoseconds, or 0
*/
public static long nanosFromInterval(IntervalQualifier qualifier, boolean negative, long leading, long remaining) {
long v;
switch (qualifier) {
case SECOND:
v = leading * NANOS_PER_SECOND + remaining;
break;
case DAY_TO_SECOND:
case HOUR_TO_SECOND:
v = remaining % NANOS_PER_MINUTE;
break;
case MINUTE_TO_SECOND:
v = remaining;
break;
default:
return 0;
}
if (negative) {
v = -v;
}
return v;
}
}