org.apache.lucene.analysis
Class WhitespaceTokenizer

java.lang.Object
  org.apache.lucene.util.AttributeSource
      org.apache.lucene.analysis.TokenStream
          org.apache.lucene.analysis.Tokenizer
              org.apache.lucene.analysis.CharTokenizer
                  org.apache.lucene.analysis.WhitespaceTokenizer

public class WhitespaceTokenizer
extends CharTokenizer

A WhitespaceTokenizer is a tokenizer that divides text at whitespace. Adjacent sequences of non-Whitespace characters form tokens.

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

WhitespaceTokenizer(AttributeSource.AttributeFactory factory, java.io.Reader in)
Construct a new WhitespaceTokenizer using a given AttributeSource.AttributeFactory.

WhitespaceTokenizer(AttributeSource source, java.io.Reader in)
Construct a new WhitespaceTokenizer using a given AttributeSource.

WhitespaceTokenizer(java.io.Reader in)
Construct a new WhitespaceTokenizer.

Method Summary

protected boolean

isTokenChar(char c) Collects only characters which do not satisfy Character.isWhitespace(char).

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

end, incrementToken, next, next, normalize, reset

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

close, correctOffset

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

getOnlyUseNewAPI, reset, setOnlyUseNewAPI

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

WhitespaceTokenizer

public WhitespaceTokenizer(java.io.Reader in)

Construct a new WhitespaceTokenizer.

WhitespaceTokenizer

public WhitespaceTokenizer(AttributeSource source,
                           java.io.Reader in)

Construct a new WhitespaceTokenizer using a given AttributeSource.

WhitespaceTokenizer

public WhitespaceTokenizer(AttributeSource.AttributeFactory factory,
                           java.io.Reader in)

Construct a new WhitespaceTokenizer using a given AttributeSource.AttributeFactory.

Method Detail

isTokenChar

protected boolean isTokenChar(char c)

Collects only characters which do not satisfy Character.isWhitespace(char).

Specified by:

isTokenChar in class CharTokenizer