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java.lang.Objectorg.apache.lucene.analysis.TokenStream
org.apache.lucene.analysis.TokenFilter
org.apache.lucene.analysis.nl.DutchStemFilter
public final class DutchStemFilter
A filter 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).
Field Summary |
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Fields inherited from class org.apache.lucene.analysis.TokenFilter |
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input |
Constructor Summary | |
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DutchStemFilter(TokenStream _in)
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DutchStemFilter(TokenStream _in,
Set exclusiontable)
Builds a DutchStemFilter that uses an exclusiontable. |
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DutchStemFilter(TokenStream _in,
Set exclusiontable,
Map stemdictionary)
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Method Summary | |
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Token |
next()
Returns the next token in the stream, or null at EOS. |
void |
setExclusionTable(HashSet exclusiontable)
Set an alternative exclusion list for this filter. |
void |
setStemDictionary(HashMap dict)
Set dictionary for stemming, this dictionary overrules the algorithm, so you can correct for a particular unwanted word-stem pair. |
void |
setStemmer(DutchStemmer stemmer)
Set a alternative/custom DutchStemmer for this filter. |
Methods inherited from class org.apache.lucene.analysis.TokenFilter |
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close |
Methods inherited from class org.apache.lucene.analysis.TokenStream |
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next, reset |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public DutchStemFilter(TokenStream _in)
public DutchStemFilter(TokenStream _in, Set exclusiontable)
public DutchStemFilter(TokenStream _in, Set exclusiontable, Map stemdictionary)
stemdictionary
- Dictionary of word stem pairs, that overrule the algorithmMethod Detail |
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public Token next() throws IOException
TokenStream
TokenStream.next(Token)
instead..
next
in class TokenStream
IOException
public void setStemmer(DutchStemmer stemmer)
public void setExclusionTable(HashSet exclusiontable)
public void setStemDictionary(HashMap dict)
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