org.apache.lucene.analysis.miscellaneous

Class StemmerOverrideFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.analysis.miscellaneous.StemmerOverrideFilter

All Implemented Interfaces:

Closeable, AutoCloseable

public final class StemmerOverrideFilter
extends TokenFilter

Provides the ability to override any KeywordAttribute aware stemmer with custom dictionary-based stemming.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StemmerOverrideFilter.Builder This builder builds an FST for the StemmerOverrideFilter
static class	StemmerOverrideFilter.StemmerOverrideMap A read-only 4-byte FST backed map that allows fast case-insensitive key value lookups for StemmerOverrideFilter

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

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

DEFAULT_ATTRIBUTE_FACTORY

Constructor Summary

Constructors

Constructor and Description
StemmerOverrideFilter(TokenStream input, StemmerOverrideFilter.StemmerOverrideMap stemmerOverrideMap) Create a new StemmerOverrideFilter, performing dictionary-based stemming with the provided dictionary.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	incrementToken()

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

close, end, reset

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

StemmerOverrideFilter

public StemmerOverrideFilter(TokenStream input,
                     StemmerOverrideFilter.StemmerOverrideMap stemmerOverrideMap)

Create a new StemmerOverrideFilter, performing dictionary-based stemming with the provided dictionary.

Any dictionary-stemmed terms will be marked with KeywordAttribute so that they will not be stemmed with stemmers down the chain.

Method Detail

incrementToken

public boolean incrementToken()
                       throws IOException

Specified by:

incrementToken in class TokenStream

Throws:

IOException