Package org.apache.lucene.analysis.morfologik

Class MorfologikFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.analysis.morfologik.MorfologikFilter

All Implemented Interfaces:

Closeable, AutoCloseable, Unwrappable<TokenStream>

public class MorfologikFilter
extends TokenFilter

TokenFilter using Morfologik library to transform input tokens into lemma and morphosyntactic (POS) tokens. Applies to Polish only.

MorfologikFilter contains a MorphosyntacticTagsAttribute, which provides morphosyntactic annotations for produced lemmas. See the Morfologik documentation for details.

See Also:

• Morfologik project page

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.TokenStream

DEFAULT_TOKEN_ATTRIBUTE_FACTORY

Constructor Summary

Constructors

Constructor	Description
MorfologikFilter(TokenStream in)	Creates a filter with the default (Polish) dictionary.
MorfologikFilter(TokenStream in, morfologik.stemming.Dictionary dict)	Creates a filter with a given dictionary.

Method Summary

Modifier and Type	Method	Description
final boolean	incrementToken()	Retrieves the next token (possibly from the list of lemmas).
void	reset()	Resets stems accumulator and hands over to superclass.

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 Details

MorfologikFilter

public MorfologikFilter(TokenStream in)

Creates a filter with the default (Polish) dictionary.

MorfologikFilter

public MorfologikFilter(TokenStream in,
 morfologik.stemming.Dictionary dict)

Creates a filter with a given dictionary.

Parameters:

in - input token stream.

dict - Dictionary to use for stemming.

Method Details

incrementToken

public final boolean incrementToken()
                             throws IOException

Retrieves the next token (possibly from the list of lemmas).

Specified by:

incrementToken in class TokenStream

Throws:

IOException

reset

public void reset()
           throws IOException

Resets stems accumulator and hands over to superclass.

Overrides:

reset in class TokenFilter

Throws:

IOException