## org.apache.lucene.analysis.en
Class KStemFilter

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

All Implemented Interfaces:
  Closeable

    public final class KStemFilter

extends org.apache.lucene.analysis.TokenFilter

A high-performance kstem filter for english.

See "Viewing Morphology as an Inference Process" (Krovetz, R., Proceedings of the Sixteenth Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 191-203, 1993).

All terms must already be lowercased for this filter to work correctly.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource
`org.apache.lucene.util.AttributeSource.AttributeFactory, org.apache.lucene.util.AttributeSource.State`

Field Summary

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

Constructor Summary
`KStemFilter(org.apache.lucene.analysis.TokenStream in)`

Method Summary
`boolean` `incrementToken()` Returns the next, stemmed, input Token.

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

### KStemFilter

    public KStemFilter(org.apache.lucene.analysis.TokenStream in)

Method Detail

### incrementToken

    public boolean incrementToken()
                           throws IOException

  Returns the next, stemmed, input Token.

  Specified by:
    `incrementToken` in class `org.apache.lucene.analysis.TokenStream`
  Returns:
    The stemed form of a token.
  Throws:
    `IOException`