org.h2.util

Class TimeZoneProvider

java.lang.Object

org.h2.util.TimeZoneProvider

public abstract class TimeZoneProvider
extends java.lang.Object

Provides access to time zone API.

Field Summary

Fields

Modifier and Type	Field and Description
static TimeZoneProvider[]	CACHE A small cache for timezone providers.
static TimeZoneProvider	UTC The UTC time zone provider.

Constructor Summary

Constructors

Constructor and Description
TimeZoneProvider()

Method Summary

Modifier and Type	Method and Description
static TimeZoneProvider	getDefault() Returns the time zone provider for the system default time zone.
abstract long	getEpochSecondsFromLocal(long dateValue, long timeNanos) Calculates the epoch seconds from local date and time.
abstract java.lang.String	getId() Returns the ID of the time zone.
abstract java.lang.String	getShortId(long epochSeconds) Get the standard time name or daylight saving time name of the time zone.
abstract int	getTimeZoneOffsetLocal(long dateValue, long timeNanos) Calculates the time zone offset in seconds for the specified date value and nanoseconds since midnight in local time.
abstract int	getTimeZoneOffsetUTC(long epochSeconds) Calculates the time zone offset in seconds for the specified EPOCH seconds.
boolean	hasFixedOffset() Returns whether this is a simple time zone provider with a fixed offset from UTC.
static TimeZoneProvider	ofId(java.lang.String id) Returns the time zone provider with the specified name.
static TimeZoneProvider	ofOffset(int offset) Returns the time zone provider with the specified offset.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

UTC

public static final TimeZoneProvider UTC

The UTC time zone provider.

CACHE

public static TimeZoneProvider[] CACHE

A small cache for timezone providers.

Constructor Detail

TimeZoneProvider

public TimeZoneProvider()

Method Detail

ofOffset

public static TimeZoneProvider ofOffset(int offset)

Returns the time zone provider with the specified offset.

Parameters:

offset - UTC offset in seconds

Returns:

the time zone provider with the specified offset

ofId

public static TimeZoneProvider ofId(java.lang.String id)
                             throws java.lang.RuntimeException

Returns the time zone provider with the specified name.

Parameters:

id - the ID of the time zone

Returns:

the time zone provider with the specified name

Throws:

java.lang.RuntimeException - if time zone with specified ID isn't known

getDefault

public static TimeZoneProvider getDefault()

Returns the time zone provider for the system default time zone.

Returns:

the time zone provider for the system default time zone

getTimeZoneOffsetUTC

public abstract int getTimeZoneOffsetUTC(long epochSeconds)

Calculates the time zone offset in seconds for the specified EPOCH seconds.

Parameters:

epochSeconds - seconds since EPOCH

Returns:

time zone offset in minutes

getTimeZoneOffsetLocal

public abstract int getTimeZoneOffsetLocal(long dateValue,
                                           long timeNanos)

Calculates the time zone offset in seconds for the specified date value and nanoseconds since midnight in local time.

Parameters:

dateValue - date value

timeNanos - nanoseconds since midnight

Returns:

time zone offset in minutes

getEpochSecondsFromLocal

public abstract long getEpochSecondsFromLocal(long dateValue,
                                              long timeNanos)

Calculates the epoch seconds from local date and time.

Parameters:

dateValue - date value

timeNanos - nanoseconds since midnight

Returns:

the epoch seconds value

getId

public abstract java.lang.String getId()

Returns the ID of the time zone.

Returns:

the ID of the time zone

getShortId

public abstract java.lang.String getShortId(long epochSeconds)

Get the standard time name or daylight saving time name of the time zone.

Parameters:

epochSeconds - seconds since EPOCH

Returns:

the standard time name or daylight saving time name of the time zone

hasFixedOffset

public boolean hasFixedOffset()

Returns whether this is a simple time zone provider with a fixed offset from UTC.

Returns:

whether this is a simple time zone provider with a fixed offset from UTC