CachedDateTimeZone

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org.joda.time.tz
Class CachedDateTimeZone

java.lang.Object
  org.joda.time.DateTimeZone
      org.joda.time.tz.CachedDateTimeZone

All Implemented Interfaces:: java.io.Serializable

public class CachedDateTimeZone
extends org.joda.time.DateTimeZone

Improves the performance of requesting time zone offsets and name keys by caching the results. Time zones that have simple rules or are fixed should not be cached, as it is unlikely to improve performance.

CachedDateTimeZone is thread-safe and immutable.

Since:: 1.0

Nested Class Summary

private static class CachedDateTimeZone.Info


Nested classes inherited from class org.joda.time.DateTimeZone

Field Summary

private static int cInfoCacheMask


private CachedDateTimeZone.Info[] iInfoCache


private org.joda.time.DateTimeZone iZone


private static long serialVersionUID


Fields inherited from class org.joda.time.DateTimeZone

UTC

Constructor Summary

private CachedDateTimeZone(org.joda.time.DateTimeZone zone)


Method Summary

private CachedDateTimeZone.Info createInfo(long millis)


boolean equals(java.lang.Object obj)
          Compare this datetime zone with another.

static CachedDateTimeZone forZone(org.joda.time.DateTimeZone zone)
          Returns a new CachedDateTimeZone unless given zone is already cached.

private CachedDateTimeZone.Info getInfo(long millis)


java.lang.String getNameKey(long instant)
          Returns a non-localized name that is unique to this time zone.

int getOffset(long instant)
          Gets the millisecond offset to add to UTC to get local time.

int getStandardOffset(long instant)
          Gets the standard millisecond offset to add to UTC to get local time, when standard time is in effect.

org.joda.time.DateTimeZone getUncachedZone()
          Returns the DateTimeZone being wrapped.

int hashCode()
          Gets a hash code compatable with equals.

boolean isFixed()
          Returns true if this time zone has no transitions.

long nextTransition(long instant)
          Advances the given instant to where the time zone offset or name changes.

long previousTransition(long instant)
          Retreats the given instant to where the time zone offset or name changes.

private void readObject(java.io.ObjectInputStream in)


Methods inherited from class org.joda.time.DateTimeZone

forID, forOffsetHours, forOffsetHoursMinutes, forOffsetMillis, forTimeZone, getAvailableIDs, getDefault, getID, getMillisKeepLocal, getName, getName, getNameProvider, getOffset, getOffsetFromLocal, getProvider, getShortName, getShortName, setDefault, setNameProvider, setProvider, toString, toTimeZone, writeReplace

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:: Constant Field Values

cInfoCacheMask

private static final int cInfoCacheMask

iZone

private final org.joda.time.DateTimeZone iZone

iInfoCache

private transient CachedDateTimeZone.Info[] iInfoCache

Constructor Detail

CachedDateTimeZone

private CachedDateTimeZone(org.joda.time.DateTimeZone zone)

Method Detail

forZone

public static CachedDateTimeZone forZone(org.joda.time.DateTimeZone zone)

Returns a new CachedDateTimeZone unless given zone is already cached.

readObject

private void readObject(java.io.ObjectInputStream in)
                 throws java.io.IOException,
                        java.lang.ClassNotFoundException

getUncachedZone

public org.joda.time.DateTimeZone getUncachedZone()

Returns the DateTimeZone being wrapped.