org.apache.lucene.analysis
Class TokenFilter

java.lang.Object
  org.apache.lucene.util.AttributeSource
      org.apache.lucene.analysis.TokenStream
          org.apache.lucene.analysis.TokenFilter

All Implemented Interfaces:

Closeable

Direct Known Subclasses:

ArabicNormalizationFilter, ArabicStemFilter, ASCIIFoldingFilter, BrazilianStemFilter, CachingTokenFilter, ChineseFilter, CollationKeyFilter, CompoundWordTokenFilterBase, DelimitedPayloadTokenFilter, DutchStemFilter, EdgeNGramTokenFilter, ElisionFilter, FrenchStemFilter, GermanStemFilter, GreekLowerCaseFilter, ICUCollationKeyFilter, ISOLatin1AccentFilter, LengthFilter, LowerCaseFilter, NGramTokenFilter, NumericPayloadTokenFilter, PersianNormalizationFilter, PorterStemFilter, PositionFilter, ReverseStringFilter, RussianLowerCaseFilter, RussianStemFilter, ShingleFilter, SnowballFilter, StandardFilter, StopFilter, SynonymTokenFilter, TeeSinkTokenFilter, ThaiWordFilter, TokenOffsetPayloadTokenFilter, TypeAsPayloadTokenFilter, WordTokenFilter

public abstract class TokenFilter
extends TokenStream

A TokenFilter is a TokenStream whose input is another TokenStream.

This is an abstract class; subclasses must override TokenStream.incrementToken().

See Also:

TokenStream

Nested Class Summary

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

AttributeSource.AttributeFactory, AttributeSource.State

Field Summary

protected TokenStream

input The source of tokens for this filter.

Constructor Summary

protected

TokenFilter(TokenStream input) Construct a token stream filtering the given input.

Method Summary

void	close() Close the input TokenStream.
void	end() Performs end-of-stream operations, if any, and calls then end() on the input TokenStream. NOTE: Be sure to call super.end() first when overriding this method.
void	reset() Reset the filter as well as the input TokenStream.

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

incrementToken

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

Field Detail

input

protected final TokenStream input

The source of tokens for this filter.

Constructor Detail

TokenFilter

protected TokenFilter(TokenStream input)

Construct a token stream filtering the given input.

Method Detail

end

public void end()
         throws IOException

Performs end-of-stream operations, if any, and calls then end() on the input TokenStream.

NOTE: Be sure to call super.end() first when overriding this method.

Overrides:

end in class TokenStream

Throws:

IOException

close

public void close()
           throws IOException

Close the input TokenStream.

Specified by:

close in interface Closeable

Overrides:

close in class TokenStream

Throws:

IOException

reset

public void reset()
           throws IOException

Reset the filter as well as the input TokenStream.

Overrides:

reset in class TokenStream

Throws:

IOException