org.esa.snap.core.datamodel

Class ProductData.UTC

java.lang.Object

org.esa.snap.core.datamodel.ProductData

org.esa.snap.core.datamodel.ProductData.Int

org.esa.snap.core.datamodel.ProductData.UInt

org.esa.snap.core.datamodel.ProductData.UTC

All Implemented Interfaces:

Cloneable

Enclosing class:

ProductData

public static class ProductData.UTC
extends ProductData.UInt

The ProductData.UTC class is a ProductData.UInt specialisation for UTC date/time values.

Internally, data is stored in an int[3] array which represents a Modified Julian Day 2000 (MJD) as a days, a seconds and a micro-seconds fraction.

See Also:

getMJD(), getDaysFraction(), getSecondsFraction(), getMicroSecondsFraction()

Nested Class Summary

Nested classes/interfaces inherited from class org.esa.snap.core.datamodel.ProductData

ProductData.ASCII, ProductData.Byte, ProductData.Double, ProductData.Float, ProductData.Int, ProductData.Long, ProductData.Short, ProductData.UByte, ProductData.UInt, ProductData.UShort, ProductData.UTC

Field Summary

Fields

Modifier and Type	Field and Description
static String	DATE_FORMAT_PATTERN The default pattern used to format date strings.
static TimeZone	UTC_TIME_ZONE The default UTC time zone used by this class.

Fields inherited from class org.esa.snap.core.datamodel.ProductData.Int

_array

Fields inherited from class org.esa.snap.core.datamodel.ProductData

TYPE_ASCII, TYPE_FLOAT32, TYPE_FLOAT64, TYPE_INT16, TYPE_INT32, TYPE_INT64, TYPE_INT8, TYPE_UINT16, TYPE_UINT32, TYPE_UINT8, TYPE_UNDEFINED, TYPE_UTC, TYPESTRING_ASCII, TYPESTRING_FLOAT32, TYPESTRING_FLOAT64, TYPESTRING_INT16, TYPESTRING_INT32, TYPESTRING_INT64, TYPESTRING_INT8, TYPESTRING_UINT16, TYPESTRING_UINT32, TYPESTRING_UINT8, TYPESTRING_UTC

Constructor Summary

Constructors

Constructor and Description
UTC() Constructs a new UTC value.
UTC(double mjd) Constructs a MJD2000 date instance.
UTC(int[] elems) Constructs a MJD2000 date instance.
UTC(int days, int seconds, int microSeconds) Constructs a MJD2000 date instance.

Method Summary

Modifier and Type	Method and Description
static ProductData.UTC	create(Date date, long micros) Creates a new UTC instance based on the given time and microseconds fraction.
static Calendar	createCalendar() Gets the MJD 2000 calendar on which this UTC date/time is based.
static DateFormat	createDateFormat() Creates the MJD 2000 date format used to parse and format.
static DateFormat	createDateFormat(String pattern) Creates a date format using the given pattern.
protected ProductData	createDeepClone() Retuns a "deep" copy of this product data.
String	format() Formats this UTC date/time value as a string using the format DATE_FORMAT_PATTERN and the default MJD 2000 calendar.
Calendar	getAsCalendar() Gets the MJD 2000 calendar on which this UTC date/time is based.
Date	getAsDate() Returns this UTC date/time value as a Date.
int	getDaysFraction() Returns the days fraction of the Modified Julian Day (MJD) as a signed integer (the 1st element of the internal data array).
String	getElemString() Returns this UTC date/time value as a string using the format DATE_FORMAT_PATTERN.
long	getMicroSecondsFraction() Returns the micro-seconds fraction of the Modified Julian Day (MJD) as a signed integer (the 3rd element of the internal data array).
double	getMJD() Returns the Modified Julian Day 2000 (MJD2000) represented by this UTC value as double value.
long	getSecondsFraction() Returns the seconds fraction of the Modified Julian Day (MJD) as a signed integer (the 2nd element of the internal data array).
String	getTypeString() Returns this value's data type String.
static ProductData.UTC	parse(String text) Parses a UTC value given as text in MJD 2000 format.
static ProductData.UTC	parse(String text, DateFormat dateFormat) Parses a UTC value given as text.
static ProductData.UTC	parse(String text, String pattern) Parses a UTC value given as text.

Methods inherited from class org.esa.snap.core.datamodel.ProductData.UInt

getElemDoubleAt, getElemFloatAt, getElemIntAt, getElemStringAt, getElemUIntAt, setElems

Methods inherited from class org.esa.snap.core.datamodel.ProductData.Int

dispose, getArray, getElemLongAt, getElems, getNumElems, readFrom, setElemDoubleAt, setElemFloatAt, setElemIntAt, setElemLongAt, setElemUIntAt, writeTo

Methods inherited from class org.esa.snap.core.datamodel.ProductData

createInstance, createInstance, createInstance, createInstance, createInstance, createInstance, createInstance, createInstance, createInstance, createInstance, createUnsignedInstance, createUnsignedInstance, createUnsignedInstance, equalElems, equals, getElemBoolean, getElemBooleanAt, getElemDouble, getElemFloat, getElemInt, getElemLong, getElemSize, getElemSize, getElemUInt, getType, getType, getTypeString, hashCode, isFloatingPointType, isInt, isIntType, isScalar, isSigned, isUIntType, isUnsigned, readFrom, readFrom, readFrom, setElemBoolean, setElemBooleanAt, setElemDouble, setElemFloat, setElemInt, setElemLong, setElemString, setElemStringAt, setElemUInt, toString, writeTo, writeTo, writeTo

Methods inherited from class java.lang.Object

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

Field Detail

UTC_TIME_ZONE

public static final TimeZone UTC_TIME_ZONE

The default UTC time zone used by this class.

DATE_FORMAT_PATTERN

public static final String DATE_FORMAT_PATTERN

The default pattern used to format date strings.

See Also:

Constant Field Values

Constructor Detail

UTC

public UTC()

Constructs a new UTC value.

UTC

public UTC(int[] elems)

Constructs a MJD2000 date instance.

Parameters:

elems - an array containg at least the three elements {days, seconds, microSeconds}

UTC

public UTC(int days,
           int seconds,
           int microSeconds)

Constructs a MJD2000 date instance.

Parameters:

days - the number of days since 2000-01-01 00:00

seconds - the seconds fraction of the number of days

microSeconds - the microseconds fraction of the number of days

UTC

public UTC(double mjd)

Constructs a MJD2000 date instance.

Parameters:

mjd - the Modified Julian Day 2000 (MJD2000) as double value

See Also:

getMJD()

Method Detail

create

public static ProductData.UTC create(Date date,
                                     long micros)

Creates a new UTC instance based on the given time and microseconds fraction.

Parameters:

date - the UTC time

micros - the microseconds fraction

Returns:

a new UTC instance

createCalendar

public static Calendar createCalendar()

Gets the MJD 2000 calendar on which this UTC date/time is based. The date is initially set the 1st January 2000, 0:00.

Returns:

the MJD 2000 calendar

See Also:

getAsCalendar()

createDateFormat

public static DateFormat createDateFormat()

Creates the MJD 2000 date format used to parse and format. The method returns createDateFormat(String) with DATE_FORMAT_PATTERN.

Returns:

a MJD 2000 date/time format

createDateFormat

public static DateFormat createDateFormat(String pattern)

Creates a date format using the given pattern. The date format returned, will use the english locale ('en') and a calendar returned by the createCalendar() method.

Parameters:

pattern - the data format pattern

Returns:

a date format

See Also:

SimpleDateFormat

parse

public static ProductData.UTC parse(String text)
                             throws ParseException

Parses a UTC value given as text in MJD 2000 format. The method returns parse(String, String) using DATE_FORMAT_PATTERN as pattern.

Parameters:

text - a UTC value given as text

Returns:

the UTC value represented by the given text

Throws:

ParseException - thrown if the text could not be parsed

See Also:

createCalendar(), createDateFormat()

parse

public static ProductData.UTC parse(String text,
                                    String pattern)
                             throws ParseException

Parses a UTC value given as text. The method also considers an optional mircoseconds fraction at the end of the text string. The mircoseconds fraction is a dot '.' followed by a maximum of 6 digits.

Parameters:

text - a UTC value given as text

pattern - the date/time pattern

Returns:

the UTC value represented by the given text

Throws:

ParseException - thrown if the text could not be parsed

See Also:

createCalendar(), createDateFormat()

parse

public static ProductData.UTC parse(String text,
                                    DateFormat dateFormat)
                             throws ParseException

Parses a UTC value given as text. The method also considers an optional mircoseconds fraction at the end of the text string. The mircoseconds fraction is a dot '.' followed by a maximum of 6 digits.

Parameters:

text - a UTC value given as text

dateFormat - the date/time pattern

Returns:

the UTC value represented by the given text

Throws:

ParseException - thrown if the text could not be parsed

See Also:

createCalendar(), createDateFormat()

format

public String format()

Formats this UTC date/time value as a string using the format DATE_FORMAT_PATTERN and the default MJD 2000 calendar.

Returns:

a formated UTC date/time string

See Also:

createCalendar(), createDateFormat()

getElemString

public String getElemString()

Returns this UTC date/time value as a string using the format DATE_FORMAT_PATTERN. Simply calls format().

Overrides:

getElemString in class ProductData

Returns:

a text representing this fields value, never null

createDeepClone

protected ProductData createDeepClone()

Retuns a "deep" copy of this product data.

Overrides:

createDeepClone in class ProductData.UInt

Returns:

a copy of this product data

getTypeString

public String getTypeString()

Returns this value's data type String.

Overrides:

getTypeString in class ProductData

getAsCalendar

public Calendar getAsCalendar()

Gets the MJD 2000 calendar on which this UTC date/time is based. The date of the calendar is set to this UTC value.

Returns:

the MJD 2000 calendar

See Also:

createCalendar(), getAsDate()

getAsDate

public Date getAsDate()

Returns this UTC date/time value as a Date. The method interpretes this UTC value as a MJD 2000 date (Modified Julian Day where the first day is the 01.01.2000).

See Also:

getAsCalendar()

getMJD

public double getMJD()

Returns the Modified Julian Day 2000 (MJD2000) represented by this UTC value as double value.

Returns:

this UTC value computed as days

getDaysFraction

public int getDaysFraction()

Returns the days fraction of the Modified Julian Day (MJD) as a signed integer (the 1st element of the internal data array).

Returns:

This UTC's days fraction.

See Also:

getMJD()

getSecondsFraction

public long getSecondsFraction()

Returns the seconds fraction of the Modified Julian Day (MJD) as a signed integer (the 2nd element of the internal data array).

Returns:

This UTC's seconds fraction.

See Also:

getMJD()

getMicroSecondsFraction

public long getMicroSecondsFraction()

Returns the micro-seconds fraction of the Modified Julian Day (MJD) as a signed integer (the 3rd element of the internal data array).

Returns:

This UTC's micro-seconds fraction.

See Also:

getMJD()