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oracle.i18n.text
Class OraNormalizer

java.lang.Object
oracle.i18n.text.OraNormalizer

public class OraNormalizer

extends Object

The OraNormalizer class is a class used for normalizing strings following the Unicode Standard. Unicode characters may have different canonical formats. Before you can accurately compare characters, you must call the methods in this class to make sure that they are in the same canonical format. For more information regarding Unicode Normalization and the Unicode Standard, please refer to Technical Report 15 at www.unicode.org.

Field Summary

static int	CANONICAL_DECOMP Canonical decompose the string and then canonical sort the string.
static int	COMPATIBILITY_DECOMP Compatible decompose the string and then canonical sort the string.
static int	NFC Canonical decomposition then composition.
static int	NFD Canonical decomposition.
static int	NFKC Compatibility decomposition then composition canonical sort the string.
static int	NFKD Compatibility decomposition.
static int	NO_DECOMP Canonical sort the string.

Method Summary

void	canonicalSort(char[] sequence) This method takes a char[] and performs canonical sort on the sequence.
String	compose(String sequence) This is the normalization method.
String	decompose(String sequence, int mode) This is the normalization method.
static OraNormalizer	getInstance() Returns a shared OraNormalizer instance to the user.
String	normalize(String sequence, int mode) This is the normalization method.

Methods inherited from class java.lang.Object

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

Field Detail

NO_DECOMP

public static final int NO_DECOMP

Canonical sort the string.

See Also:

Constant Field Values

CANONICAL_DECOMP

public static final int CANONICAL_DECOMP

Canonical decompose the string and then canonical sort the string.

See Also:

Constant Field Values

COMPATIBILITY_DECOMP

public static final int COMPATIBILITY_DECOMP

Compatible decompose the string and then canonical sort the string.

See Also:

Constant Field Values

NFD

public static final int NFD

Canonical decomposition.

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Constant Field Values

NFC

public static final int NFC

Canonical decomposition then composition.

See Also:

Constant Field Values

NFKD

public static final int NFKD

Compatibility decomposition.

See Also:

Constant Field Values

NFKC

public static final int NFKC

Compatibility decomposition then composition canonical sort the string.

See Also:

Constant Field Values

Method Detail

getInstance

public static OraNormalizer getInstance()

Returns a shared OraNormalizer instance to the user.

Returns:

an OraNormalizer instance

canonicalSort

public void canonicalSort(char[] sequence)

This method takes a char[] and performs canonical sort on the sequence. The character string before and after this operation is considered equivalent by the Unicode Standard.

Parameters:

sequence - a string to sort

compose

public String compose(String sequence)

This is the normalization method. It normalizes by composing the Unicode characters after which it performs a canonical sort on the string.

Parameters:

sequence - a string to compose

Returns:

the composed string

decompose

public String decompose(String sequence,
                        int mode)

This is the normalization method. It normalizes by decomposing the Unicode characters after which it performs a canonical sort on the string.

Parameters:

sequence - a string to compose

mode - decomposed mode; options are NO_DECOMPOSITION, CANONICAL_DECOMPOSITION, and COMPATIBLE_DECOMPOSITION

Returns:

the decomposed string

normalize

public String normalize(String sequence,
                        int mode)

This is the normalization method. It normalizes by decomposing the Unicode character after which it performs a canonical sort on the string.

Parameters:

sequence - a string to compose

mode - decomposed mode; options are NFD, NFC, NFKD, NFKC

Returns:

the normalized string

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