Package org.apache.lucene.analysis.core
Class UnicodeWhitespaceTokenizer
- java.lang.Object
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- org.apache.lucene.util.AttributeSource
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- org.apache.lucene.analysis.TokenStream
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- org.apache.lucene.analysis.Tokenizer
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- org.apache.lucene.analysis.util.CharTokenizer
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- org.apache.lucene.analysis.core.UnicodeWhitespaceTokenizer
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- All Implemented Interfaces:
Closeable
,AutoCloseable
public final class UnicodeWhitespaceTokenizer extends CharTokenizer
A UnicodeWhitespaceTokenizer is a tokenizer that divides text at whitespace. Adjacent sequences of non-Whitespace characters form tokens (according to Unicode's WHITESPACE property).For Unicode version see:
UnicodeProps
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource
AttributeSource.State
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Field Summary
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Fields inherited from class org.apache.lucene.analysis.util.CharTokenizer
DEFAULT_MAX_WORD_LEN
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Fields inherited from class org.apache.lucene.analysis.TokenStream
DEFAULT_TOKEN_ATTRIBUTE_FACTORY
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Constructor Summary
Constructors Constructor Description UnicodeWhitespaceTokenizer()
Construct a new UnicodeWhitespaceTokenizer.UnicodeWhitespaceTokenizer(AttributeFactory factory)
Construct a new UnicodeWhitespaceTokenizer using a givenAttributeFactory
.UnicodeWhitespaceTokenizer(AttributeFactory factory, int maxTokenLen)
Construct a new UnicodeWhitespaceTokenizer using a givenAttributeFactory
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected boolean
isTokenChar(int c)
Collects only characters which do not satisfy Unicode's WHITESPACE property.-
Methods inherited from class org.apache.lucene.analysis.util.CharTokenizer
end, fromSeparatorCharPredicate, fromSeparatorCharPredicate, fromTokenCharPredicate, fromTokenCharPredicate, incrementToken, reset
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Methods inherited from class org.apache.lucene.analysis.Tokenizer
close, correctOffset, setReader
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Methods inherited from class org.apache.lucene.util.AttributeSource
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, endAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, removeAllAttributes, restoreState, toString
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Constructor Detail
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UnicodeWhitespaceTokenizer
public UnicodeWhitespaceTokenizer()
Construct a new UnicodeWhitespaceTokenizer.
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UnicodeWhitespaceTokenizer
public UnicodeWhitespaceTokenizer(AttributeFactory factory)
Construct a new UnicodeWhitespaceTokenizer using a givenAttributeFactory
.- Parameters:
factory
- the attribute factory to use for thisTokenizer
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UnicodeWhitespaceTokenizer
public UnicodeWhitespaceTokenizer(AttributeFactory factory, int maxTokenLen)
Construct a new UnicodeWhitespaceTokenizer using a givenAttributeFactory
.- Parameters:
factory
- the attribute factory to use for thisTokenizer
maxTokenLen
- maximum token length the tokenizer will emit. Must be greater than 0 and less than MAX_TOKEN_LENGTH_LIMIT (1024*1024)- Throws:
IllegalArgumentException
- if maxTokenLen is invalid.
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Method Detail
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isTokenChar
protected boolean isTokenChar(int c)
Collects only characters which do not satisfy Unicode's WHITESPACE property.- Specified by:
isTokenChar
in classCharTokenizer
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