Package 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`, `Unwrappable<TokenStream>`

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
  Description
  `static class`
  `StemmerOverrideFilter.Builder`
  This builder builds an `FST` for the `StemmerOverrideFilter`
  `static final 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`

- ## Constructor Summary

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

- ## Method Summary

  Modifier and Type
  Method
  Description
  `boolean`
  `incrementToken()`

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

  `close, end, reset, 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 Details

  - ### 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 Details

  - ### incrementToken

    public boolean incrementToken() throws IOException
    Specified by:
      `incrementToken` in class `TokenStream`
    Throws:
      `IOException`