com.ibm.icu.impl

Class TZDBTimeZoneNames

java.lang.Object

com.ibm.icu.text.TimeZoneNames

com.ibm.icu.impl.TZDBTimeZoneNames

All Implemented Interfaces:

Serializable

public class TZDBTimeZoneNames
extends TimeZoneNames

Yet another TimeZoneNames implementation based on the tz database. This implementation contains only tz abbreviations (short standard and daylight names) for each metazone. The data file $ICU4C_ROOT/source/data/zone/tzdbNames.txt contains the metazone - abbreviations mapping data (manually edited). Note: The abbreviations in the tz database are not necessarily unique. For example, parsing abbreviation "IST" is ambiguous (can be parsed as India Standard Time or Israel Standard Time). The data file (tzdbNames.txt) contains regional mapping, and the locale in the constructor is used as a hint for resolving these ambiguous names.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.ibm.icu.text.TimeZoneNames

TimeZoneNames.Factory, TimeZoneNames.MatchInfo, TimeZoneNames.NameType

Constructor Summary

Constructors

Constructor and Description
TZDBTimeZoneNames(ULocale loc)

Method Summary

Modifier and Type	Method and Description
Collection<TimeZoneNames.MatchInfo>	find(CharSequence text, int start, EnumSet<TimeZoneNames.NameType> nameTypes) Finds time zone name prefix matches for the input text at the given offset and returns a collection of the matches.
Set<String>	getAvailableMetaZoneIDs() Returns an immutable set of all available meta zone IDs.
Set<String>	getAvailableMetaZoneIDs(String tzID) Returns an immutable set of all available meta zone IDs used by the given time zone.
String	getMetaZoneDisplayName(String mzID, TimeZoneNames.NameType type) Returns the display name of the meta zone.
String	getMetaZoneID(String tzID, long date) Returns the meta zone ID for the given canonical time zone ID at the given date.
String	getReferenceZoneID(String mzID, String region) Returns the reference zone ID for the given meta zone ID for the region.
String	getTimeZoneDisplayName(String tzID, TimeZoneNames.NameType type) Returns the display name of the time zone.

Methods inherited from class com.ibm.icu.text.TimeZoneNames

getDisplayName, getDisplayNames, getExemplarLocationName, getInstance, getInstance, getTZDBInstance, loadAllDisplayNames

Methods inherited from class java.lang.Object

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

Constructor Detail

TZDBTimeZoneNames

public TZDBTimeZoneNames(ULocale loc)

Method Detail

getAvailableMetaZoneIDs

public Set<String> getAvailableMetaZoneIDs()

Description copied from class: TimeZoneNames

Returns an immutable set of all available meta zone IDs.

Specified by:

getAvailableMetaZoneIDs in class TimeZoneNames

Returns:

An immutable set of all available meta zone IDs.

getAvailableMetaZoneIDs

public Set<String> getAvailableMetaZoneIDs(String tzID)

Description copied from class: TimeZoneNames

Returns an immutable set of all available meta zone IDs used by the given time zone.

Specified by:

getAvailableMetaZoneIDs in class TimeZoneNames

Parameters:

tzID - The canonical time zone ID.

Returns:

An immutable set of all available meta zone IDs used by the given time zone.

getMetaZoneID

public String getMetaZoneID(String tzID,
                            long date)

Description copied from class: TimeZoneNames

Returns the meta zone ID for the given canonical time zone ID at the given date.

Specified by:

getMetaZoneID in class TimeZoneNames

Parameters:

tzID - The canonical time zone ID.

date - The date.

Returns:

The meta zone ID for the given time zone ID at the given date. If the time zone does not have a corresponding meta zone at the given date or the implementation does not support meta zones, null is returned.

getReferenceZoneID

public String getReferenceZoneID(String mzID,
                                 String region)

Description copied from class: TimeZoneNames

Returns the reference zone ID for the given meta zone ID for the region. Note: Each meta zone must have a reference zone associated with a special region "001" (world). Some meta zones may have region specific reference zone IDs other than the special region "001". When a meta zone does not have any region specific reference zone IDs, this method return the reference zone ID for the special region "001" (world).

Specified by:

getReferenceZoneID in class TimeZoneNames

Parameters:

mzID - The meta zone ID.

region - The region.

Returns:

The reference zone ID ("golden zone" in the LDML specification) for the given time zone ID for the region. If the meta zone is unknown or the implementation does not support meta zones, null is returned.

getMetaZoneDisplayName

public String getMetaZoneDisplayName(String mzID,
                                     TimeZoneNames.NameType type)

Description copied from class: TimeZoneNames

Returns the display name of the meta zone.

Specified by:

getMetaZoneDisplayName in class TimeZoneNames

Parameters:

mzID - The meta zone ID.

type - The display name type. See TimeZoneNames.NameType.

Returns:

The display name of the meta zone. When this object does not have a localized display name for the given meta zone with the specified type or the implementation does not provide any display names associated with meta zones, null is returned.

getTimeZoneDisplayName

public String getTimeZoneDisplayName(String tzID,
                                     TimeZoneNames.NameType type)

Description copied from class: TimeZoneNames

Returns the display name of the time zone. Unlike TimeZoneNames.getDisplayName(String, NameType, long), this method does not get a name from a meta zone used by the time zone.

Specified by:

getTimeZoneDisplayName in class TimeZoneNames

Parameters:

tzID - The canonical time zone ID.

type - The display name type. See TimeZoneNames.NameType.

Returns:

The display name for the time zone. When this object does not have a localized display name for the given time zone with the specified type, null is returned.

find

public Collection<TimeZoneNames.MatchInfo> find(CharSequence text,
                                                int start,
                                                EnumSet<TimeZoneNames.NameType> nameTypes)

Description copied from class: TimeZoneNames

Finds time zone name prefix matches for the input text at the given offset and returns a collection of the matches.

Overrides:

find in class TimeZoneNames

Parameters:

text - the text.

start - the starting offset within the text.

nameTypes - the set of name types, or null for all name types.

Returns:

A collection of matches.

See Also:

TimeZoneNames.NameType, TimeZoneNames.MatchInfo