Package org.apache.lucene.analysis.miscellaneous

Class TypeAsSynonymFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.analysis.miscellaneous.TypeAsSynonymFilter

All Implemented Interfaces:

Closeable, AutoCloseable, Unwrappable<TokenStream>

public final class TypeAsSynonymFilter
extends TokenFilter

Adds the TypeAttribute.type() as a synonym, i.e. another token at the same position, optionally with a specified prefix prepended, optionally transfering flags, and optionally ignoring some types. See TypeAsSynonymFilterFactory for full details.

Nested Class Summary

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

AttributeSource.State

Field Summary

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

input

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

DEFAULT_TOKEN_ATTRIBUTE_FACTORY

Constructor Summary

Constructors

Constructor	Description
TypeAsSynonymFilter(TokenStream input)
TypeAsSynonymFilter(TokenStream input, String prefix)
TypeAsSynonymFilter(TokenStream input, String prefix, Set<String> ignore, int synFlagsMask)

Method Summary

Modifier and Type	Method	Description
boolean	incrementToken()
void	reset()

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

close, end, unwrap

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

Methods inherited from class java.lang.Object

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

Constructor Detail

TypeAsSynonymFilter

public TypeAsSynonymFilter(TokenStream input)

TypeAsSynonymFilter

public TypeAsSynonymFilter(TokenStream input,
                           String prefix)

Parameters:

input - input tokenstream

prefix - Prepend this string to every token type emitted as token text. If null, nothing will be prepended.

TypeAsSynonymFilter

public TypeAsSynonymFilter(TokenStream input,
                           String prefix,
                           Set<String> ignore,
                           int synFlagsMask)

Parameters:

input - input tokenstream

prefix - Prepend this string to every token type emitted as token text. If null, nothing will be prepended.

ignore - types to ignore (and not convert to a synonym)

synFlagsMask - a mask to control what flags are propagated to the synonym.

Method Detail

incrementToken

public boolean incrementToken()
                       throws IOException

Specified by:

incrementToken in class TokenStream

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class TokenFilter

Throws:

IOException