org.orekit.time
Class TimeComponents

java.lang.Object
  org.orekit.time.TimeComponents

All Implemented Interfaces:

Serializable, Comparable<TimeComponents>

public class TimeComponents
extends Object
implements Serializable, Comparable<TimeComponents>

Class representing a time within the day broken up as hour, minute and second components.

Instances of this class are guaranteed to be immutable.

Author:

Luc Maisonobe

See Also:

DateComponents, DateTimeComponents, Serialized Form

Field Summary

static int	DEFAULT_SECONDS_PRECISION Default digit number of the seconds fractional part.
static TimeComponents	H00 Constant for commonly used hour 00:00:00.
static TimeComponents	H12 Constant for commonly used hour 12:00:00.

Constructor Summary

TimeComponents(double secondInDay)
Build a time from the second number within the day.

TimeComponents(int secondInDayA, double secondInDayB)
Build a time from the second number within the day.

TimeComponents(int hour, int minute, double second)
Build a time from its clock elements.

Method Summary

int	compareTo(TimeComponents other)
boolean	equals(Object other)
int	getHour() Get the hour number.
int	getMinute() Get the minute number.
double	getSecond() Get the seconds number.
double	getSecondsInDay() Get the second number within the day.
int	hashCode()
static TimeComponents	parseTime(String string) Parse a string in ISO-8601 format to build a time.
String	toString() Get a string representation of the time.
protected String	toString(int precision, boolean isTimeNearLeapSecond) Get a string representation of the time.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

DEFAULT_SECONDS_PRECISION

public static final int DEFAULT_SECONDS_PRECISION

Default digit number of the seconds fractional part.

See Also:

Constant Field Values

H00

public static final TimeComponents H00

Constant for commonly used hour 00:00:00.

H12

public static final TimeComponents H12

Constant for commonly used hour 12:00:00.

Constructor Detail

TimeComponents

public TimeComponents(int hour,
                      int minute,
                      double second)
               throws IllegalArgumentException

Build a time from its clock elements.

Note that seconds between 60.0 (inclusive) and 61.0 (exclusive) are allowed in this method, since they do occur during leap seconds introduction in the UTC time scale.

Parameters:

hour - hour number from 0 to 23

minute - minute number from 0 to 59

second - second number from 0.0 to 61.0 (excluded)

Throws:

IllegalArgumentException - if inconsistent arguments are given (parameters out of range)

TimeComponents

public TimeComponents(double secondInDay)

Build a time from the second number within the day.

Parameters:

secondInDay - second number from 0.0 to Constants.JULIAN_DAY (excluded)

TimeComponents

public TimeComponents(int secondInDayA,
                      double secondInDayB)
               throws IllegalArgumentException

Build a time from the second number within the day.

The second number is defined here as the sum secondInDayA + secondInDayB from 0.0 to Constants.JULIAN_DAY (excluded). The two parameters are used for increased accuracy.

Parameters:

secondInDayA - first part of the second number

secondInDayB - last part of the second number

Throws:

IllegalArgumentException - if seconds number is out of range

Method Detail

parseTime

public static TimeComponents parseTime(String string)
                                throws IllegalArgumentException

Parse a string in ISO-8601 format to build a time.

The supported formats are:

• basic format local time: hhmmss (with optional decimals in seconds)
• extended format local time: hh:mm:ss (with optional decimals in seconds)
• basic format UTC time: hhmmssZ (with optional decimals in seconds)
• extended format UTC time: hh:mm:ssZ (with optional decimals in seconds)
• basic format local time with 00h UTC offset: hhmmss+00 (with optional decimals in seconds)
• extended format local time with 00h UTC offset: hhmmss+00 (with optional decimals in seconds)
• basic format local time with 00h and 00m UTC offset: hhmmss+00:00 (with optional decimals in seconds)
• extended format local time with 00h and 00m UTC offset: hhmmss+00:00 (with optional decimals in seconds)

As shown by the list above, only the complete representations defined in section 4.2 of ISO-8601 standard are supported, neither expended representations nor representations with reduced accuracy are supported.

As this class does not support time zones (because space flight dynamics uses time scales with offsets from UTC having sub-second accuracy), only UTC is zone is supported (and in fact ignored). It is the responsibility of the AbsoluteDate class to handle time scales appropriately.

Parameters:

string - string to parse

Returns:

a parsed time

Throws:

IllegalArgumentException - if string cannot be parsed

getHour

public int getHour()

Get the hour number.

Returns:

hour number from 0 to 23

getMinute

public int getMinute()

Get the minute number.

Returns:

minute minute number from 0 to 59

getSecond

public double getSecond()

Get the seconds number.

Returns:

second second number from 0.0 to 60.0 (excluded)

getSecondsInDay

public double getSecondsInDay()

Get the second number within the day.

Returns:

second number from 0.0 to Constants.JULIAN_DAY

toString

public String toString()

Get a string representation of the time.

Overrides:

toString in class Object

Returns:

string representation of the time

toString

protected String toString(int precision,
                          boolean isTimeNearLeapSecond)
                   throws IllegalArgumentException

Get a string representation of the time.

Parameters:

precision - digit number of the seconds fractional part

isTimeNearLeapSecond - true if the date is inside or immediately before a leap second. It is used to set the upper boundary of the current day: 23:59:60.99.. when true, 23:59:59.99.. when false.

Returns:

string representation of the time

Throws:

IllegalArgumentException - if inconsistent arguments are given (negative precision)

compareTo

public int compareTo(TimeComponents other)

Specified by:

compareTo in interface Comparable<TimeComponents>

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object