/*
* Copyright (c) 2007-2009, Stephen Colebourne & Michael Nascimento Santos
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of JSR-310 nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package javax.time;
import java.io.Serializable;
import java.math.BigInteger;
import javax.time.calendar.format.CalendricalParseException;
/**
* A duration between two instants on the time-line.
* <p>
* The Java Time Framework models time as a series of instantaneous events,
* known as instants, along a single time-line. This class represents the
* duration between two of those instants.
* <p>
* Each instant is theoretically an instantaneous event, however for practicality
* a precision of nanoseconds has been chosen. As a result, the duration class also
* has a maximum precision of nanoseconds.
* <p>
* Duration is immutable and thread-safe.
* <p>
* NOTE: Since the number of nanoseconds is represented by a positive integer,
* negative durations such as <code>PT-0.1S</code> are represented as -1 second
* and 900,000,000 nanoseconds.
*
* @author Michael Nascimento Santos
* @author Stephen Colebourne
*/
public final class Duration implements Comparable<Duration>, Serializable {
/**
* Constant for a duration of zero.
*/
public static final Duration ZERO = new Duration(0, 0);
/**
* BigInteger constant for a billion.
*/
private static final BigInteger BILLION = BigInteger.valueOf(1000000000);
// /**
// * BigInteger constant for a million.
// */
// private static final BigInteger MILLION = BigInteger.valueOf(1000000);
/**
* Constant for nanos per second.
*/
private static final int NANOS_PER_SECOND = 1000000000;
/**
* Serialization version id.
*/
private static final long serialVersionUID = -835275378278L;
/**
* The number of seconds in the duration.
*/
private final long seconds;
/**
* The number of nanoseconds in the duration, expressed as a fraction of the
* number of seconds. This is always positive, and never exceeds 999,999,999.
*/
private final int nanoAdjustment;
//-----------------------------------------------------------------------
/**
* Obtains an instance of <code>Duration</code> from a number of seconds.
*
* @param seconds the number of seconds
* @return the created Duration, never null
*/
public static Duration seconds(long seconds) {
if (seconds == 0) {
return ZERO;
}
return new Duration(seconds, 0);
}
/**
* Obtains an instance of <code>Duration</code> from a number of seconds
* and an adjustment in nanoseconds.
* <p>
* This methods allows an arbitrary number of nanoseconds to be passed in.
* If the nanoseconds is not in the range 0 to 999,999,999 then both the
* seconds and nanoseconds will be adjusted to fit.
* Thus, the following are equivalent:
* <pre>
* Duration.duration(3, 1);
* Duration.duration(4, -999999999);
* Duration.duration(2, 1000000001);
* </pre>
*
* @param seconds the number of seconds
* @param nanoAdjustment the nanosecond adjustment to the number of seconds, positive or negative
* @return the created Duration, never null
* @throws ArithmeticException if the adjustment causes the seconds to exceed the capacity of Duration
*/
public static Duration seconds(long seconds, long nanoAdjustment) {
if (seconds == 0 && nanoAdjustment == 0) {
return ZERO;
}
long secs = MathUtils.safeAdd(seconds, nanoAdjustment / NANOS_PER_SECOND);
int nos = (int) (nanoAdjustment % NANOS_PER_SECOND);
if (nos < 0) {
nos += NANOS_PER_SECOND;
secs = MathUtils.safeDecrement(secs);
}
return new Duration(secs, nos);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of <code>Duration</code> from a number of milliseconds.
*
* @param millis the number of milliseconds
* @return the created Duration, never null
*/
public static Duration millis(long millis) {
if (millis == 0) {
return ZERO;
}
long secs = millis / 1000;
int mos = (int) (millis % 1000);
if (mos < 0) {
mos += 1000;
secs--;
}
return new Duration(secs, mos * 1000000);
}
/**
* Obtains an instance of <code>Duration</code> from a number of milliseconds
* and an adjustment in nanoseconds.
* <p>
* This methods allows an arbitrary number of nanoseconds to be passed in.
* If the nanoseconds is not in the range 0 to 999,999,999 then both the
* milliseconds and nanoseconds will be adjusted to fit.
* Thus, the following are equivalent:
* <pre>
* Duration.duration(3, 1);
* Duration.duration(4, -999999);
* Duration.duration(2, 1000001);
* </pre>
*
* @param millis the number of milliseconds
* @param nanoAdjustment the nanosecond adjustment to the number of milliseconds, positive or negative
* @return the created Duration, never null
*/
public static Duration millis(long millis, long nanoAdjustment) {
if (millis == 0 && nanoAdjustment == 0) {
return ZERO;
}
long secs = (millis / 1000) + (nanoAdjustment / NANOS_PER_SECOND);
long nanos = ((millis % 1000) * 1000000) + (nanoAdjustment % NANOS_PER_SECOND);
secs += nanos / NANOS_PER_SECOND;
int nos = (int) (nanos % NANOS_PER_SECOND);
if (nos < 0) {
nos += NANOS_PER_SECOND;
secs--;
}
return new Duration(secs, nos);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of <code>Duration</code> from a number of nanoseconds.
*
* @param nanos the number of nanoseconds
* @return the created Duration, never null
*/
public static Duration nanos(long nanos) {
if (nanos == 0) {
return ZERO;
}
long secs = nanos / NANOS_PER_SECOND;
int nos = (int) (nanos % NANOS_PER_SECOND);
if (nos < 0) {
nos += NANOS_PER_SECOND;
secs--;
}
return new Duration(secs, nos);
}
/**
* Obtains an instance of <code>Duration</code> from a number of nanoseconds.
*
* @param nanos the number of nanoseconds, not null
* @return the created Duration, never null
* @throws ArithmeticException if the input nanoseconds exceeds the capacity of Duration
*/
public static Duration nanos(BigInteger nanos) {
Instant.checkNotNull(nanos, "Nanos must not be null");
if (nanos.equals(BigInteger.ZERO)) {
return ZERO;
}
BigInteger[] divRem = nanos.divideAndRemainder(BILLION);
if (divRem[0].bitLength() > 63) {
throw new ArithmeticException("Exceeds capacity of Duration: " + nanos);
}
return seconds(divRem[0].longValue(), divRem[1].intValue());
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of <code>Duration</code> from a number of standard length minutes.
* <p>
* This factory uses the standard definition of a minute.
* Specifically, this means that there are 60 seconds in a minute.
*
* @param minutes the number of minutes
* @return the created Duration, never null
* @throws ArithmeticException if the input minutes exceeds the capacity of Duration
*/
public static Duration standardMinutes(long minutes) {
if (minutes == 0) {
return ZERO;
}
return new Duration(MathUtils.safeMultiply(minutes, 60), 0);
}
/**
* Obtains an instance of <code>Duration</code> from a number of standard length hours.
* <p>
* This factory uses the standard definition of an hour.
* Specifically, this means that there are 3600 seconds in an hour.
*
* @param hours the number of hours
* @return the created Duration, never null
* @throws ArithmeticException if the input hours exceeds the capacity of Duration
*/
public static Duration standardHours(long hours) {
if (hours == 0) {
return ZERO;
}
return new Duration(MathUtils.safeMultiply(hours, 3600), 0);
}
/**
* Obtains an instance of <code>Duration</code> from a number of standard length days.
* <p>
* This factory uses the standard definition of a day.
* Specifically, this means that there are 86400 seconds in a day,
* which implies a 24 hour day.
*
* @param days the number of days
* @return the created Duration, never null
* @throws ArithmeticException if the input days exceeds the capacity of Duration
*/
public static Duration standardDays(long days) {
if (days == 0) {
return ZERO;
}
return new Duration(MathUtils.safeMultiply(days, 86400), 0);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of <code>Duration</code> representing the duration between two instants.
* This method will return a negative duration if the end is before the start.
*
* @param startInclusive the start instant, inclusive, not null
* @param endExclusive the end instant, exclusive, not null
* @return the created Duration, never null
* @throws ArithmeticException if the duration exceeds the capacity of Duration
*/
public static Duration durationBetween(InstantProvider startInclusive, InstantProvider endExclusive) {
Instant start = Instant.instant(startInclusive);
Instant end = Instant.instant(endExclusive);
long secs = MathUtils.safeSubtract(end.getEpochSeconds(), start.getEpochSeconds());
int nanos = end.getNanoOfSecond() - start.getNanoOfSecond();
if (nanos < 0) {
nanos += NANOS_PER_SECOND;
secs = MathUtils.safeDecrement(secs);
}
return create(secs, nanos);
}
//-----------------------------------------------------------------------
/**
* Obtains an instance of <code>Duration</code> from a string.
* <p>
* This will parse the string produced by <code>toString()</code> which is
* the ISO8601 format <code>PTnS</code> where <code>n</code> is
* the number of seconds with optional decimal part.
* The number must consist of ASCII numerals.
* There must only be a negative sign at the start of the number and it can
* only be present if the value is less then zero.
* There must be at least one digit before any decimal point.
* There must be between 1 and 9 inclusive digits after any decimal point.
* The letters (P, T and S) will be accepted in upper or lower case.
* The decimal point may be either a dot or a comma.
*
* @param text the text to parse, not null
* @return the created Duration, never null
* @throws IllegalArgumentException if the text cannot be parsed to a Duration
*/
public static Duration parse(final String text) {
Instant.checkNotNull(text, "Text to parse must not be null");
int len = text.length();
if (len < 4 ||
(text.charAt(0) != 'P' && text.charAt(0) != 'p') ||
(text.charAt(1) != 'T' && text.charAt(1) != 't') ||
(text.charAt(len - 1) != 'S' && text.charAt(len - 1) != 's') ||
(len == 5 && text.charAt(2) == '-' && text.charAt(3) == '0')) {
throw new CalendricalParseException("Duration could not be parsed: " + text, text, 0);
}
String numberText = text.substring(2, len - 1).replace(',', '.');
int dot = numberText.indexOf('.');
try {
if (dot == -1) {
// no decimal places
return create(Long.parseLong(numberText), 0);
}
// decimal places
boolean negative = false;
if (numberText.charAt(0) == '-') {
negative = true;
}
long secs = Long.parseLong(numberText.substring(0, dot));
numberText = numberText.substring(dot + 1);
len = numberText.length();
if (len == 0 || len > 9 || numberText.charAt(0) == '-') {
throw new CalendricalParseException("Duration could not be parsed: " + text, text, 2);
}
int nanos = Integer.parseInt(numberText);
switch (len) {
case 1:
nanos *= 100000000;
break;
case 2:
nanos *= 10000000;
break;
case 3:
nanos *= 1000000;
break;
case 4:
nanos *= 100000;
break;
case 5:
nanos *= 10000;
break;
case 6:
nanos *= 1000;
break;
case 7:
nanos *= 100;
break;
case 8:
nanos *= 10;
break;
}
return negative ? seconds(secs, -nanos) : create(secs, nanos);
} catch (ArithmeticException ex) {
throw new CalendricalParseException("Duration could not be parsed: " + text, text, 2, ex);
} catch (NumberFormatException ex) {
throw new CalendricalParseException("Duration could not be parsed: " + text, text, 2, ex);
}
}
//-----------------------------------------------------------------------
/**
* Creates an instance of Duration using seconds and nanoseconds.
*
* @param seconds the length of the duration in seconds
* @param nanoAdjustment the nanosecond adjustment within the second, from 0 to 999,999,999
*/
private static Duration create(long seconds, int nanoAdjustment) {
if (seconds == 0 && nanoAdjustment == 0) {
return ZERO;
}
return new Duration(seconds, nanoAdjustment);
}
/**
* Constructs an instance of Duration using seconds and nanoseconds.
*
* @param seconds the length of the duration in seconds
* @param nanoAdjustment the nanosecond adjustment within the second, from 0 to 999,999,999
*/
private Duration(long seconds, int nanoAdjustment) {
super();
this.seconds = seconds;
this.nanoAdjustment = nanoAdjustment;
}
/**
* Resolves singletons.
*
* @return the resolved instance
*/
private Object readResolve() {
if (seconds == 0 && nanoAdjustment == 0) {
return ZERO;
}
return this;
}
//-----------------------------------------------------------------------
/**
* Gets the number of seconds in this duration.
* <p>
* The length of the duration is expressed using two fields - seconds and
* nanoseconds. The nanoseconds is held as a value from 0 to 999,999,999
* and is an adjustment to the length.
* <p>
* A duration can be negative, and this is expressed by the negative sign
* of the value returned from this method. A duration of -1 nanosecond is
* stored as -1 seconds plus 999,999,999 nanoseconds.
*
* @return the length of the duration in seconds
*/
public long getSeconds() {
return seconds;
}
/**
* Gets the number of nanoseconds within the second in this duration.
* <p>
* The length of the duration is expressed using two fields - seconds and
* nanoseconds. The nanoseconds is held as a value from 0 to 999,999,999
* and is an adjustment to the length.
* <p>
* A duration can be negative, and this is expressed by the negative sign
* of the value returned from {@link #getSeconds()}. A duration of
* -1 nanosecond is stored as -1 seconds plus 999,999,999 nanoseconds.
*
* @return the nanosecond adjustment to the second, from 0 to 999,999,999
*/
public int getNanosAdjustment() {
return nanoAdjustment;
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this Duration with the specified duration added.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param duration the duration to add, not null
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration plus(Duration duration) {
long secsToAdd = duration.seconds;
int nanosToAdd = duration.nanoAdjustment;
if (secsToAdd == 0 && nanosToAdd == 0) {
return this;
}
long secs = MathUtils.safeAdd(seconds, secsToAdd);
int nos = nanoAdjustment + nanosToAdd; // safe
if (nos >= NANOS_PER_SECOND) {
nos -= NANOS_PER_SECOND;
secs = MathUtils.safeIncrement(secs);
}
return create(secs, nos);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this Duration with the specified number of seconds added.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param secondsToAdd the seconds to add
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration plusSeconds(long secondsToAdd) {
if (secondsToAdd == 0) {
return this;
}
long secs = MathUtils.safeAdd(seconds, secondsToAdd);
return create(secs, nanoAdjustment);
}
/**
* Returns a copy of this Duration with the specified number of milliseconds added.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param millisToAdd the milliseconds to add
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration plusMillis(long millisToAdd) {
if (millisToAdd == 0) {
return this;
}
long secondsToAdd = millisToAdd / 1000;
// add: 0 to 999,000,000, subtract: 0 to -999,000,000
int nos = ((int) (millisToAdd % 1000)) * 1000000;
// add: 0 to 0 to 1998,999,999, subtract: -999,000,000 to 999,999,999
nos += nanoAdjustment;
if (nos < 0) {
nos += NANOS_PER_SECOND; // subtract: 1,000,000 to 999,999,999
secondsToAdd--;
} else if (nos >= NANOS_PER_SECOND) {
nos -= NANOS_PER_SECOND; // add: 1 to 998,999,999
secondsToAdd++;
}
return create(MathUtils.safeAdd(seconds, secondsToAdd) , nos);
}
/**
* Returns a copy of this Duration with the specified number of nanoseconds added.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param nanosToAdd the nanoseconds to add
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration plusNanos(long nanosToAdd) {
if (nanosToAdd == 0) {
return this;
}
long secondsToAdd = nanosToAdd / NANOS_PER_SECOND;
// add: 0 to 999,999,999, subtract: 0 to -999,999,999
int nos = (int) (nanosToAdd % NANOS_PER_SECOND);
// add: 0 to 0 to 1999,999,998, subtract: -999,999,999 to 999,999,999
nos += nanoAdjustment;
if (nos < 0) {
nos += NANOS_PER_SECOND; // subtract: 1 to 999,999,999
secondsToAdd--;
} else if (nos >= NANOS_PER_SECOND) {
nos -= NANOS_PER_SECOND; // add: 1 to 999,999,999
secondsToAdd++;
}
return create(MathUtils.safeAdd(seconds, secondsToAdd) , nos);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this Duration with the specified duration subtracted.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param duration the duration to subtract, not null
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration minus(Duration duration) {
long secsToSubtract = duration.seconds;
int nanosToSubtract = duration.nanoAdjustment;
if (secsToSubtract == 0 && nanosToSubtract == 0) {
return this;
}
long secs = MathUtils.safeSubtract(seconds, secsToSubtract);
int nos = nanoAdjustment - nanosToSubtract; // safe
if (nos < 0) {
nos += NANOS_PER_SECOND;
secs = MathUtils.safeDecrement(secs);
}
return create(secs, nos);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this Duration with the specified number of seconds subtracted.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param secondsToSubtract the seconds to subtract
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration minusSeconds(long secondsToSubtract) {
if (secondsToSubtract == 0) {
return this;
}
long secs = MathUtils.safeSubtract(seconds, secondsToSubtract);
return create(secs, nanoAdjustment);
}
/**
* Returns a copy of this Duration with the specified number of milliseconds subtracted.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param millisToSubtract the milliseconds to subtract
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration minusMillis(long millisToSubtract) {
if (millisToSubtract == 0) {
return this;
}
long secondsToSubtract = millisToSubtract / 1000;
int nos = ((int) (millisToSubtract % 1000)) * 1000000;
nos = nanoAdjustment - nos;
if (nos < 0) {
nos += NANOS_PER_SECOND;
secondsToSubtract++;
} else if (nos >= NANOS_PER_SECOND) {
nos -= NANOS_PER_SECOND;
secondsToSubtract--;
}
return create(MathUtils.safeSubtract(seconds, secondsToSubtract), nos);
}
/**
* Returns a copy of this Duration with the specified number of nanoseconds subtracted.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param nanosToSubtract the nanoseconds to subtract
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration minusNanos(long nanosToSubtract) {
if (nanosToSubtract == 0) {
return this;
}
long secondsToSubtract = nanosToSubtract / NANOS_PER_SECOND;
int nos = (int) (nanosToSubtract % NANOS_PER_SECOND);
nos = nanoAdjustment - nos;
if (nos < 0) {
nos += NANOS_PER_SECOND;
secondsToSubtract++;
} else if (nos >= NANOS_PER_SECOND) {
nos -= NANOS_PER_SECOND;
secondsToSubtract--;
}
return create(MathUtils.safeSubtract(seconds, secondsToSubtract), nos);
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this Duration multiplied by the scalar.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param multiplicand the value to multiply the duration by
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration multipliedBy(long multiplicand) {
if (multiplicand == 0) {
return ZERO;
}
if (multiplicand == 1) {
return this;
}
BigInteger nanos = toNanosBigInteger();
nanos = nanos.multiply(BigInteger.valueOf(multiplicand));
BigInteger[] divRem = nanos.divideAndRemainder(BILLION);
if (divRem[0].bitLength() > 63) {
throw new ArithmeticException("Multiplication result exceeds capacity of Duration: " + this + " * " + multiplicand);
}
return seconds(divRem[0].longValue(), divRem[1].intValue());
}
//-----------------------------------------------------------------------
/**
* Returns a copy of this Duration divided by the specified value.
* <p>
* This instance is immutable and unaffected by this method call.
*
* @param divisor the value to divide the duration by
* @return a new updated Duration, never null
* @throws ArithmeticException if the result exceeds the storage capacity
*/
public Duration dividedBy(long divisor) {
if (divisor == 0) {
throw new ArithmeticException("Cannot divide by zero");
}
if (divisor == 1) {
return this;
}
BigInteger nanos = toNanosBigInteger();
nanos = nanos.divide(BigInteger.valueOf(divisor));
BigInteger[] divRem = nanos.divideAndRemainder(BILLION);
return seconds(divRem[0].longValue(), divRem[1].intValue());
}
//-----------------------------------------------------------------------
/**
* Compares this Duration to another.
*
* @param otherDuration the other duration to compare to, not null
* @return the comparator value, negative if less, positive if greater
* @throws NullPointerException if otherDuration is null
*/
public int compareTo(Duration otherDuration) {
int cmp = MathUtils.safeCompare(seconds, otherDuration.seconds);
if (cmp != 0) {
return cmp;
}
return MathUtils.safeCompare(nanoAdjustment, otherDuration.nanoAdjustment);
}
/**
* Is this Duration longer than the specified one.
*
* @param otherDuration the other duration to compare to, not null
* @return true if this duration is longer than the specified duration
* @throws NullPointerException if otherDuration is null
*/
public boolean isLongerThan(Duration otherDuration) {
return compareTo(otherDuration) > 0;
}
/**
* Is this Duration shorter than the specified one.
*
* @param otherDuration the other duration to compare to, not null
* @return true if this duration is shorter than the specified duration
* @throws NullPointerException if otherDuration is null
*/
public boolean isShorterThan(Duration otherDuration) {
return compareTo(otherDuration) < 0;
}
//-----------------------------------------------------------------------
/**
* Returns the length of this duration in milliseconds.
* <p>
* If the duration is too large to fit in a long milliseconds, then an
* exception is thrown.
* If the duration has a length in nanoseconds that is not a whole number
* of milliseconds, then the remainder is simply dropped.
*
* @return the length of the duration in milliseconds
* @throws ArithmeticException if the length exceeds the capacity of a long
*/
public long toMillis() {
long millis = MathUtils.safeMultiply(seconds, 1000);
millis = MathUtils.safeAdd(millis, nanoAdjustment / 1000000);
return millis;
}
// /**
// * Returns the length of this duration in milliseconds expressed as a <code>BigInteger</code>.
// *
// * @return the length of the duration in milliseconds
// */
// public BigInteger toMillisBigInteger() {
// return toNanosBigInteger().divide(MILLION);
// }
/**
* Returns the length of this duration in nanoseconds.
* <p>
* If the duration is too large to fit in a long nanoseconds, then an
* exception is thrown.
*
* @return the length of the duration in nanoseconds
* @throws ArithmeticException if the length exceeds the capacity of a long
*/
public long toNanos() {
long millis = MathUtils.safeMultiply(seconds, 1000000000);
millis = MathUtils.safeAdd(millis, nanoAdjustment);
return millis;
}
/**
* Returns the length of this duration in nanoseconds expressed as a <code>BigInteger</code>.
*
* @return the length of the duration in nanoseconds
*/
public BigInteger toNanosBigInteger() {
return BigInteger.valueOf(seconds).multiply(BILLION).add(BigInteger.valueOf(nanoAdjustment));
}
//-----------------------------------------------------------------------
/**
* Is this Duration equal to that specified.
*
* @param otherDuration the other duration, null returns false
* @return true if the other duration is equal to this one
*/
@Override
public boolean equals(Object otherDuration) {
if (this == otherDuration) {
return true;
}
if (otherDuration instanceof Duration) {
Duration other = (Duration) otherDuration;
return this.seconds == other.seconds &&
this.nanoAdjustment == other.nanoAdjustment;
}
return false;
}
/**
* A hash code for this Duration.
*
* @return a suitable hash code
*/
@Override
public int hashCode() {
return ((int) (seconds ^ (seconds >>> 32))) + (51 * nanoAdjustment);
}
//-----------------------------------------------------------------------
/**
* A string representation of this Duration using ISO-8601 seconds based
* representation.
* <p>
* The format of the returned string will be <code>PTnS</code> where n is
* the seconds and fractional seconds of the duration.
*
* @return an ISO-8601 representation of this Duration
*/
@Override
public String toString() {
StringBuilder buf = new StringBuilder(24);
buf.append("PT");
if (seconds < 0 && nanoAdjustment > 0) {
if (seconds == -1) {
buf.append("-0");
} else {
buf.append(seconds + 1);
}
} else {
buf.append(seconds);
}
if (nanoAdjustment > 0) {
int pos = buf.length();
if (seconds < 0) {
buf.append(2 * NANOS_PER_SECOND - nanoAdjustment);
} else {
buf.append(nanoAdjustment + NANOS_PER_SECOND);
}
while (buf.charAt(buf.length() - 1) == '0') {
buf.setLength(buf.length() - 1);
}
buf.setCharAt(pos, '.');
}
buf.append('S');
return buf.toString();
}
}