org.apache.lucene.analysis.miscellaneous

Class PrefixAwareTokenFilter

java.lang.Object

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.miscellaneous.PrefixAwareTokenFilter

public class PrefixAwareTokenFilter
extends TokenStream

Joins two token streams and leaves the last token of the first stream available to be used when updating the token values in the second stream based on that token. The default implementation adds last prefix token end offset to the suffix token start and end offsets.

Constructor Summary

Constructors

Constructor and Description
PrefixAwareTokenFilter(TokenStream prefix, TokenStream suffix)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
TokenStream	getPrefix()
TokenStream	getSuffix()
Token	next(Token reusableToken)
void	reset()
void	setPrefix(TokenStream prefix)
void	setSuffix(TokenStream suffix)
Token	updateSuffixToken(Token suffixToken, Token lastPrefixToken) The default implementation adds last prefix token end offset to the suffix token start and end offsets.

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

next

Methods inherited from class java.lang.Object

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

Constructor Detail

PrefixAwareTokenFilter

public PrefixAwareTokenFilter(TokenStream prefix,
                      TokenStream suffix)

Method Detail

next

public Token next(Token reusableToken)
           throws IOException

Overrides:

next in class TokenStream

Throws:

IOException

updateSuffixToken

public Token updateSuffixToken(Token suffixToken,
                      Token lastPrefixToken)

The default implementation adds last prefix token end offset to the suffix token start and end offsets.

Parameters:

suffixToken - a token from the suffix stream

lastPrefixToken - the last token from the prefix stream

Returns:

consumer token

close

public void close()
           throws IOException

Overrides:

close in class TokenStream

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class TokenStream

Throws:

IOException

getPrefix

public TokenStream getPrefix()

setPrefix

public void setPrefix(TokenStream prefix)

getSuffix

public TokenStream getSuffix()

setSuffix

public void setSuffix(TokenStream suffix)