org.gvsig.timesupport

Interface Chronology

All Known Implementing Classes:

DefaultChronology

public interface Chronology

Chronology provides access to the individual date time fields for a chronological calendar system.

Various chronologies are supported by subclasses including ISO and GregorianJulian. To construct a Chronology you should use the factory methods on the TimeSupportManager.

The provided chronology implementations are:

• ISO - Based on the ISO8601 standard and suitable for use after about 1600
• GJ - Historically accurate calendar with Julian followed by Gregorian
• Gregorian - The Gregorian calendar system used for all time (proleptic)
• Julian - The Julian calendar system used for all time (proleptic)
• Buddhist - The Buddhist calendar system which is an offset in years from GJ
• Coptic - The Coptic calendar system which defines 30 day months
• Ethiopic - The Ethiopic calendar system which defines 30 day months

Instances of this class are singletons and they can be compared using the ChronologygetType() method and the == operator.

A huge part of the documentation of this class has been retrieved from the joda-time library.

See Also:

http://joda-time.sourceforge.net, https://gvsig.org/web/projects/gvsig-desktop/docs/devel/org-gvsig-sensors/1-0.0/analysis-and-design/detailed-view/time-support/libraries/org-gvsig-timesupport-lib

Field Summary

Fields

Modifier and Type	Field and Description
static int	BUDDHIST
static int	COPTIC
static int	GJ
static int	GREGORIAN
static int	ISO
static int	JULIAN

Method Summary

Modifier and Type	Method and Description
int	getType() Gets the code of the type, that is one of the constants defined in the Chronology class.
Chronology	withUTC() Returns an instance of this Chronology that operates in the UTC time zone.

Field Detail

BUDDHIST

static final int BUDDHIST

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Constant Field Values

COPTIC

static final int COPTIC

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Constant Field Values

GJ

static final int GJ

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Constant Field Values

GREGORIAN

static final int GREGORIAN

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Constant Field Values

ISO

static final int ISO

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Constant Field Values

JULIAN

static final int JULIAN

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Constant Field Values

Method Detail

getType

int getType()

Gets the code of the type, that is one of the constants defined in the Chronology class.

Returns:

the type code

withUTC

Chronology withUTC()

Returns an instance of this Chronology that operates in the UTC time zone. Chronologies that do not operate in a time zone or are already UTC must return themself.

Returns:

a version of this chronology that ignores time zones