org.apache.lucene.analysis.de
Class GermanStemFilter
java.lang.Object
org.apache.lucene.util.AttributeSource
org.apache.lucene.analysis.TokenStream
org.apache.lucene.analysis.TokenFilter
org.apache.lucene.analysis.de.GermanStemFilter
- All Implemented Interfaces:
- Closeable
public final class GermanStemFilter
- extends org.apache.lucene.analysis.TokenFilter
A 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
).
Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource |
org.apache.lucene.util.AttributeSource.AttributeFactory, org.apache.lucene.util.AttributeSource.State |
Fields inherited from class org.apache.lucene.analysis.TokenFilter |
input |
Constructor Summary |
GermanStemFilter(org.apache.lucene.analysis.TokenStream in)
|
GermanStemFilter(org.apache.lucene.analysis.TokenStream in,
Set exclusionSet)
Builds a GermanStemFilter that uses an exclusion table. |
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, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, restoreState, toString |
GermanStemFilter
public GermanStemFilter(org.apache.lucene.analysis.TokenStream in)
GermanStemFilter
public GermanStemFilter(org.apache.lucene.analysis.TokenStream in,
Set exclusionSet)
- Builds a GermanStemFilter that uses an exclusion table.
incrementToken
public boolean incrementToken()
throws IOException
- Specified by:
incrementToken
in class org.apache.lucene.analysis.TokenStream
- Returns:
- Returns true for next token in the stream, or false at EOS
- Throws:
IOException
setStemmer
public void setStemmer(GermanStemmer stemmer)
- Set a alternative/custom
GermanStemmer
for this filter.
setExclusionSet
public void setExclusionSet(Set exclusionSet)
- Set an alternative exclusion list for this filter.
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