org.apache.lucene.analysis.ar

Class ArabicLetterTokenizer

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.Tokenizer

org.apache.lucene.analysis.util.CharTokenizer

org.apache.lucene.analysis.core.LetterTokenizer

org.apache.lucene.analysis.ar.ArabicLetterTokenizer

All Implemented Interfaces:

Closeable

Deprecated.

(3.1) Use StandardTokenizer instead.

@Deprecated
public class ArabicLetterTokenizer
extends LetterTokenizer

Tokenizer that breaks text into runs of letters and diacritics.

The problem with the standard Letter tokenizer is that it fails on diacritics. Handling similar to this is necessary for Indic Scripts, Hebrew, Thaana, etc.

You must specify the required Version compatibility when creating ArabicLetterTokenizer:

• As of 3.1, CharTokenizer uses an int based API to normalize and detect token characters. See isTokenChar(int) and CharTokenizer.normalize(int) for details.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource

AttributeSource.AttributeFactory, AttributeSource.State

Field Summary

Fields inherited from class org.apache.lucene.analysis.Tokenizer

input

Constructor Summary

Constructors

Constructor and Description
ArabicLetterTokenizer(Version matchVersion, AttributeSource.AttributeFactory factory, Reader in) Deprecated. Construct a new ArabicLetterTokenizer using a given AttributeSource.AttributeFactory.
ArabicLetterTokenizer(Version matchVersion, Reader in) Deprecated. Construct a new ArabicLetterTokenizer.

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	isTokenChar(int c) Deprecated. Allows for Letter category or NonspacingMark category

Methods inherited from class org.apache.lucene.analysis.util.CharTokenizer

end, incrementToken, normalize, reset

Methods inherited from class org.apache.lucene.analysis.Tokenizer

close, correctOffset, setReader

Methods inherited from class org.apache.lucene.util.AttributeSource

addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ArabicLetterTokenizer

public ArabicLetterTokenizer(Version matchVersion,
                     Reader in)

Deprecated.

Construct a new ArabicLetterTokenizer.

Parameters:

matchVersion - Lucene version to match See above

in - the input to split up into tokens

ArabicLetterTokenizer

public ArabicLetterTokenizer(Version matchVersion,
                     AttributeSource.AttributeFactory factory,
                     Reader in)

Deprecated.

Construct a new ArabicLetterTokenizer using a given AttributeSource.AttributeFactory. * @param matchVersion Lucene version to match See above

Parameters:

factory - the attribute factory to use for this Tokenizer

in - the input to split up into tokens

Method Detail

isTokenChar

protected boolean isTokenChar(int c)

Deprecated.

Allows for Letter category or NonspacingMark category

Overrides:

isTokenChar in class LetterTokenizer

See Also:

LetterTokenizer.isTokenChar(int)