Package org.apache.lucene.analysis.nl

Class DutchStemFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.analysis.nl.DutchStemFilter

All Implemented Interfaces:

Closeable, AutoCloseable

@Deprecated
public final class DutchStemFilter
extends TokenFilter

Deprecated.

(3.1) Use SnowballFilter with DutchStemmer instead, which has the same functionality. This filter will be removed in Lucene 5.0

A TokenFilter that stems Dutch words.

It supports a table of words that should not be stemmed at all. The stemmer used can be changed at runtime after the filter object is created (as long as it is a DutchStemmer).

To prevent terms from being stemmed use an instance of KeywordMarkerFilter or a custom TokenFilter that sets the KeywordAttribute before this TokenStream.

See Also:

• KeywordMarkerFilter

Nested Class Summary

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

AttributeSource.AttributeFactory, AttributeSource.State

Constructor Summary

Constructors

Constructor	Description
DutchStemFilter(TokenStream _in)	Deprecated.
DutchStemFilter(TokenStream _in, Map<?,?> stemdictionary)	Deprecated.

Method Summary

Modifier and Type	Method	Description
boolean	incrementToken()	Deprecated. Returns the next token in the stream, or null at EOS
void	setStemDictionary(HashMap<?,?> dict)	Deprecated. Set dictionary for stemming, this dictionary overrules the algorithm, so you can correct for a particular unwanted word-stem pair.
void	setStemmer(DutchStemmer stemmer)	Deprecated. Set a alternative/custom DutchStemmer for this filter.

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

getClass, notify, notifyAll, wait, wait, wait

Constructor Details

DutchStemFilter

public DutchStemFilter(TokenStream _in)

Deprecated.

DutchStemFilter

public DutchStemFilter(TokenStream _in,
 Map<?,?> stemdictionary)

Deprecated.

Parameters:

stemdictionary - Dictionary of word stem pairs, that overrule the algorithm

Method Details

incrementToken

public boolean incrementToken()
                       throws IOException

Deprecated.

Returns the next token in the stream, or null at EOS

Specified by:

incrementToken in class TokenStream

Returns:

false for end of stream; true otherwise

Throws:

IOException

setStemmer

public void setStemmer(DutchStemmer stemmer)

Deprecated.

Set a alternative/custom DutchStemmer for this filter.

setStemDictionary

public void setStemDictionary(HashMap<?,?> dict)

Deprecated.

Set dictionary for stemming, this dictionary overrules the algorithm, so you can correct for a particular unwanted word-stem pair.