com.ibm.icu.impl

Class UPropertyAliases

java.lang.Object

com.ibm.icu.impl.UPropertyAliases

public final class UPropertyAliases
extends Object

Wrapper for the pnames.icu binary data file. This data file is imported from icu4c. It contains property and property value aliases from the UCD files PropertyAliases.txt and PropertyValueAliases.txt. The file is built by the icu4c tool genpname. It must be an ASCII big-endian file to be usable in icu4j. This class performs two functions. (1) It can import the flat binary data into usable objects. (2) It provides an API to access the tree of objects. Needless to say, this class is tightly coupled to the binary format of icu4c's pnames.icu file. Each time a UPropertyAliases is constructed, the pnames.icu file is read, parsed, and data structures assembled. Clients should create one singleton instance and cache it.

Since:

ICU 2.4

Field Summary

Fields

Modifier and Type	Field and Description
static UPropertyAliases	INSTANCE

Method Summary

Modifier and Type	Method and Description
static int	compare(String stra, String strb) Compare two property names, returning <0, 0, or >0.
int	getPropertyEnum(CharSequence alias) Returns a property enum given one of its property names.
String	getPropertyName(int property, int nameChoice) Returns a property name given a property enum.
int	getPropertyValueEnum(int property, CharSequence alias) Returns a value enum given a property enum and one of its value names.
int	getPropertyValueEnumNoThrow(int property, CharSequence alias) Returns a value enum given a property enum and one of its value names.
String	getPropertyValueName(int property, int value, int nameChoice) Returns a value name given a property enum and a value enum.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final UPropertyAliases INSTANCE

Method Detail

getPropertyName

public String getPropertyName(int property,
                              int nameChoice)

Returns a property name given a property enum. Multiple names may be available for each property; the nameChoice selects among them.

getPropertyValueName

public String getPropertyValueName(int property,
                                   int value,
                                   int nameChoice)

Returns a value name given a property enum and a value enum. Multiple names may be available for each value; the nameChoice selects among them.

getPropertyEnum

public int getPropertyEnum(CharSequence alias)

Returns a property enum given one of its property names. If the property name is not known, this method returns UProperty.UNDEFINED.

getPropertyValueEnum

public int getPropertyValueEnum(int property,
                                CharSequence alias)

Returns a value enum given a property enum and one of its value names.

getPropertyValueEnumNoThrow

public int getPropertyValueEnumNoThrow(int property,
                                       CharSequence alias)

Returns a value enum given a property enum and one of its value names. Does not throw.

Returns:

value enum, or UProperty.UNDEFINED if not defined for that property

compare

public static int compare(String stra,
                          String strb)

Compare two property names, returning <0, 0, or >0. The comparison is that described as "loose" matching in the Property*Aliases.txt files.