Package org.h2.util

Class TimeZoneProvider

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static TimeZoneProvider[] CACHE
      A small cache for timezone providers.
      private static int CACHE_SIZE
      The number of cache elements (needs to be a power of 2).
      static TimeZoneProvider UTC
      The UTC time zone provider.

    • Method Summary

      All Methods Static Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method 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

      • CACHE

        public static TimeZoneProvider[] CACHE
        A small cache for timezone providers.

      • CACHE_SIZE

        private static final int CACHE_SIZE
        The number of cache elements (needs to be a power of 2).
        See Also:
        Constant Field Values

    • 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