oracle.i18n.util
Class LocaleMapper

java.lang.Object
  |
  +--oracle.i18n.util.LocaleMapper

public class LocaleMapper

extends Object

The LocaleMapper class maps between Oracle locale elements and equivalent locale elements in other vendors and standards. This class contains the same mapping data as the NLSRTL C library and Java oracle.gss.util package.

The locale mappings are available for Oracle and Java locales. The character set encoding mappings are available for Oracle, Java, and IANA.

Oracle character set encoding is the character set part of the NLS_LANG parameter. Java character set encoding is the available character set in Java. IANA character set encoding is the character set that is defined by IANA and widely used by various applications such as web browser or e-mail application.

Since:

10.1.0.2

Field Summary

static int	EMAIL_UNIX Constant value to represent Unix for e-mail.
static int	EMAIL_WINDOWS Constant value to represent Windows for e-mail.
static int	IANA Constant value to represent IANA.
static int	JAVA Constant value to represent Java.
static int	ORACLE Constant value to represent Oracle.
static int	UNIX Constant value to represent Unix in general.
static int	WINDOWS Constant value to represent Windows in general.

Method Summary

static String[]	getAvailableIANACharacterSets() Returns an array of all IANA character set names that have corresponding Oracle character sets.
static String[]	getAvailableOraCharacterSets() Returns an array of all Oracle character set names that have corresponding IANA character sets.
static String	getIANACharacterSet(int from, String charset) Returns the IANA character set that is equivalent to the passed in Oracle or Java character set.
static String[]	getIANACharSetFromLocale(int context, Locale locale) Returns the commonly used IANA character set based on the given context and locale.
static String[]	getIANACharSetFromOraLang(int context, String oraLanguage) Returns the commonly used IANA character set based on the given context and Oracle language.
static String	getJavaCharacterSet(int from, String charset) Returns the Java character set that is equivalent to the passed in Oracle or IANA character set.
static String	getJavaLangFromOraLang(String lang) Returns the ISO 639 two-letter code for the given Oracle language name.
static Locale	getJavaLocale(String nlsLocale) Returns a Java Locale instance that is equivalent to the Oracle locale specified by the passed in Oracle language and territory.
static Locale	getJavaLocale(String oraLanguage, String oraTerritory) Returns a Java Locale instance that is equivalent to the Oracle locale specified by the passed in Oracle language and territory.
static String	getJavaTerrFromOraTerr(String terr) Returns the ISO 3166 two-letter code for the given Oracle territory name.
static String	getOraCharacterSet(int from, String charset) Returns the Oracle character set that is equivalent to the passed in Java character set.
static String[]	getOraCharSetFromOraLang(int context, String oraLanguage) Returns the commonly used Oracle character set based on the given context and Oracle language.
static String	getOraLangFromJavaLang(String lang) Returns the Oracle language name for the given ISO 639 two-letter code.
static String	getOraLanguage(Locale locale) Returns the Oracle language name based on the given Java Locale instance.
static String	getOraLanguageFromShortName(String oraShortName) Returns the Oracle language name from the Oracle short language name.
static String	getOraLinguisticSortFromLocale(Locale locale) Returns the default Oracle linguistic sort name for the locale.
static String	getOraLocale(Locale locale) Returns the Oracle language and Oracle territory name for the given Java Locale instance in the <Oracle Language>_<Oracle Territory> form.
static String	getOraShortNameFromLanguage(String oraLanguage) Returns the Oracle short language name from the Oracle language name.
static String	getOraTerrFromJavaTerr(String terr) Returns the Oracle territory name for the given ISO 3166 two-letter code.
static String	getOraTerritory(Locale locale) Returns the Oracle territory name for the given Java Locale instance.
static boolean	isSupersetOf(int csid, int key) Return true if the charset ID specified by key is a superset of the charset specified by csid
static void	setJavaCharacterSet(int from, String charset, String encoding) Associates a default encoding with a character set.

Methods inherited from class java.lang.Object

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

Field Detail

ORACLE

public static final int ORACLE

Constant value to represent Oracle.

See Also:

Constant Field Values

IANA

public static final int IANA

Constant value to represent IANA.

See Also:

Constant Field Values

JAVA

public static final int JAVA

Constant value to represent Java.

See Also:

Constant Field Values

EMAIL_WINDOWS

public static final int EMAIL_WINDOWS

Constant value to represent Windows for e-mail.

See Also:

Constant Field Values

EMAIL_UNIX

public static final int EMAIL_UNIX

Constant value to represent Unix for e-mail.

See Also:

Constant Field Values

WINDOWS

public static final int WINDOWS

Constant value to represent Windows in general.

See Also:

Constant Field Values

UNIX

public static final int UNIX

Constant value to represent Unix in general.

See Also:

Constant Field Values

Method Detail

getAvailableIANACharacterSets

public static String[] getAvailableIANACharacterSets()

Returns an array of all IANA character set names that have corresponding Oracle character sets.

Returns:

an array of String containing the list of IANA names

getAvailableOraCharacterSets

public static String[] getAvailableOraCharacterSets()

Returns an array of all Oracle character set names that have corresponding IANA character sets.

Returns:

an array of String containing the list of Oracle names

isSupersetOf

public static boolean isSupersetOf(int csid,
                                   int key)

Return true if the charset ID specified by key is a superset of the charset specified by csid

getIANACharacterSet

public static String getIANACharacterSet(int from,
                                         String charset)

Returns the IANA character set that is equivalent to the passed in Oracle or Java character set.

Parameters:

from - can be ORACLE or JAVA

charset - character set name with which we want to find an equivalent IANA character set

Returns:

IANA character set name, null if not found

setJavaCharacterSet

public static void setJavaCharacterSet(int from,
                                       String charset,
                                       String encoding)
                                throws UnsupportedEncodingException

Associates a default encoding with a character set. This method can be used to choose a default encoding associated with a character set that can be represented as various flavors of encodings. Once the default encoding is associated, any calls to the getJavaCharacterSet(int, String) method will retrieve the associated encoding. For instance:

   LocaleMapper.setJavaCharacterSet(LocaleMapper.IANA,
                             "ISO-2022-JP", "X-ORACLE-ISO2022-JP-OUTLOOK");
   ...
   
   // cs will be assigned the value "X-ORACLE-ISO2022-JP-OUTLOOK"
   String cs = LocaleMapper.getJavaCharacterSet(IANA, "ISO-2022-JP");
   
 

Parameters:

from - - must be IANA (for now)

charset - - IANA charset name

encoding - - the encoding to which we want to set

UnsupportedEncodingException

getJavaCharacterSet

public static String getJavaCharacterSet(int from,
                                         String charset)

Returns the Java character set that is equivalent to the passed in Oracle or IANA character set.

Parameters:

from - can be ORACLE or IANA

charset - character set name with which we want to find an equivalent Java character set

Returns:

Java character set name, null if not found

getOraCharacterSet

public static String getOraCharacterSet(int from,
                                        String charset)

Returns the Oracle character set that is equivalent to the passed in Java character set.

Parameters:

from - can be IANA or JAVA

charset - character set name with which we want to find an equivalent Oracle character set

Returns:

Oracle character set name, null if not found

getJavaLocale

public static Locale getJavaLocale(String nlsLocale)

Returns a Java Locale instance that is equivalent to the Oracle locale specified by the passed in Oracle language and territory.

Parameters:

nlsLocale - NLS_LANG string where Oracle language and territory are connected with the underscore '_'

Returns:

Java Locale instance; defaults to en_US

getJavaLocale

public static Locale getJavaLocale(String oraLanguage,
                                   String oraTerritory)

Returns a Java Locale instance that is equivalent to the Oracle locale specified by the passed in Oracle language and territory.

Parameters:

oraLanguage - Oracle language

oraTerritory - Oracle territory

Returns:

Java Locale instance; defaults to en_US

getOraLanguageFromShortName

public static String getOraLanguageFromShortName(String oraShortName)

Returns the Oracle language name from the Oracle short language name.

Parameters:

oraShortName - Oracle short language name

Returns:

Oracle language name

getOraShortNameFromLanguage

public static String getOraShortNameFromLanguage(String oraLanguage)

Returns the Oracle short language name from the Oracle language name.

Parameters:

oraLanguage - Oracle language name

Returns:

Oracle short language name

getOraLanguage

public static String getOraLanguage(Locale locale)

Returns the Oracle language name based on the given Java Locale instance.

Parameters:

locale - Java Locale instance

Returns:

Oracle language name associated with the given locale, or null if no corresponding Oracle language is found

getOraTerritory

public static String getOraTerritory(Locale locale)

Returns the Oracle territory name for the given Java Locale instance.

Parameters:

locale - Java Locale instance

Returns:

Oracle territory name associated with the given Java Locale instance

getOraLocale

public static String getOraLocale(Locale locale)

Returns the Oracle language and Oracle territory name for the given Java Locale instance in the <Oracle Language>_<Oracle Territory> form.

Parameters:

locale - a Java Locale instance

Returns:

Oracle language and territory name associated with the given Java Locale instance

getIANACharSetFromLocale

public static String[] getIANACharSetFromLocale(int context,
                                                Locale locale)

Returns the commonly used IANA character set based on the given context and locale. For example, an e-mail application may need to use a different character set than a web application.

Parameters:

context - can be EMAIL_WINDOWS, EMAIL_UNIX, WINDOWS, or UNIX

locale - Java Locale instance

Returns:

IANA character set name for the given Java Locale instance

getIANACharSetFromOraLang

public static String[] getIANACharSetFromOraLang(int context,
                                                 String oraLanguage)

Returns the commonly used IANA character set based on the given context and Oracle language. For example, an e-mail application may need to use a different character set than a web application.

Parameters:

context - can be EMAIL_WINDOWS, EMAIL_UNIX, WINDOWS, or UNIX

oraLanguage - Oracle language

Returns:

IANA character set name for the given Oracle language

getOraCharSetFromOraLang

public static String[] getOraCharSetFromOraLang(int context,
                                                String oraLanguage)

Returns the commonly used Oracle character set based on the given context and Oracle language. For example, an e-mail application may need to use a different character set than a web application.

Parameters:

context - can be EMAIL_WINDOWS, EMAIL_UNIX, WINDOWS, or UNIX

oraLanguage - Oracle language

Returns:

Oracle character set name for the given Oracle language

getOraLinguisticSortFromLocale

public static String getOraLinguisticSortFromLocale(Locale locale)

Returns the default Oracle linguistic sort name for the locale.

Parameters:

locale - the locale

Returns:

the default linguistic sort name

getOraLangFromJavaLang

public static String getOraLangFromJavaLang(String lang)

Returns the Oracle language name for the given ISO 639 two-letter code.

Due to the limitation that uses the same ISO 639 two-letter code, zh for Simplified Chinese and Traditional Chinese, the two languages cannot be distinguished. In fact, if zh is given, this method returns Simplified Chinese only; it never returns Traditional Chinese.
Use the getOraLanguage(java.util.Locale) method if those two Chinese languages need to be distinguished.

Parameters:

lang - ISO 639 two-letter code

Returns:

Oracle language name

getJavaLangFromOraLang

public static String getJavaLangFromOraLang(String lang)

Returns the ISO 639 two-letter code for the given Oracle language name.

Due to the same reason discussed in the getOraLangFromJavaLang(java.lang.String) method, if either Simplified Chinese or Traditional Chinese is specified, this method always returns zh, which means loss of information.
Use the getJavaLocale(java.lang.String) method instead.

Parameters:

lang - Oracle language name

Returns:

ISO 639 two-letter code

getOraTerrFromJavaTerr

public static String getOraTerrFromJavaTerr(String terr)

Returns the Oracle territory name for the given ISO 3166 two-letter code.

Parameters:

terr - ISO 3166 two-letter code

Returns:

Oracle territory name

getJavaTerrFromOraTerr

public static String getJavaTerrFromOraTerr(String terr)

Returns the ISO 3166 two-letter code for the given Oracle territory name.

Parameters:

terr - Oracle territory name

Returns:

ISO 3166 two-letter code