public final class GermanStemFilter
extends org.apache.lucene.analysis.TokenFilter
TokenFilter
that stems German 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 GermanStemmer
).
To prevent terms from being stemmed use an instance of
KeywordMarkerFilter
or a custom TokenFilter
that sets
the KeywordAttribute
before this TokenStream
.
KeywordMarkerFilter
Constructor and Description |
---|
GermanStemFilter(org.apache.lucene.analysis.TokenStream in)
Creates a
GermanStemFilter instance |
GermanStemFilter(org.apache.lucene.analysis.TokenStream in,
Set<?> exclusionSet)
Deprecated.
use
KeywordAttribute with KeywordMarkerFilter instead. |
Modifier and Type | Method and Description |
---|---|
boolean |
incrementToken() |
void |
setExclusionSet(Set<?> exclusionSet)
Deprecated.
use
KeywordAttribute with KeywordMarkerFilter instead. |
void |
setStemmer(GermanStemmer stemmer)
Set a alternative/custom
GermanStemmer for this filter. |
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString
public GermanStemFilter(org.apache.lucene.analysis.TokenStream in)
GermanStemFilter
instancein
- the source TokenStream
@Deprecated public GermanStemFilter(org.apache.lucene.analysis.TokenStream in, Set<?> exclusionSet)
KeywordAttribute
with KeywordMarkerFilter
instead.public boolean incrementToken() throws IOException
incrementToken
in class org.apache.lucene.analysis.TokenStream
IOException
public void setStemmer(GermanStemmer stemmer)
GermanStemmer
for this filter.@Deprecated public void setExclusionSet(Set<?> exclusionSet)
KeywordAttribute
with KeywordMarkerFilter
instead.