public final class DutchStemFilter extends TokenFilter
input
Constructor and Description |
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DutchStemFilter(TokenStream _in) |
DutchStemFilter(TokenStream _in,
java.util.Set exclusiontable)
Builds a DutchStemFilter that uses an exclusion table.
|
DutchStemFilter(TokenStream _in,
java.util.Set exclusiontable,
java.util.Map stemdictionary) |
Modifier and Type | Method and Description |
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Token |
next(Token reusableToken)
Returns the next token in the stream, or null at EOS.
|
void |
setExclusionTable(java.util.HashSet exclusiontable)
Set an alternative exclusion list for this filter.
|
void |
setStemDictionary(java.util.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.
|
close, reset
next
public DutchStemFilter(TokenStream _in)
public DutchStemFilter(TokenStream _in, java.util.Set exclusiontable)
public DutchStemFilter(TokenStream _in, java.util.Set exclusiontable, java.util.Map stemdictionary)
stemdictionary
- Dictionary of word stem pairs, that overrule the algorithmpublic Token next(Token reusableToken) throws java.io.IOException
TokenStream
This implicitly defines a "contract" between consumers (callers of this method) and producers (implementations of this method that are the source for tokens):
Token.clear()
before setting the fields in it & returning itTokenFilter
is considered a consumer.next
in class TokenStream
reusableToken
- a Token that may or may not be used to
return; this parameter should never be null (the callee
is not required to check for null before using it, but it is a
good idea to assert that it is not null.)java.io.IOException
public void setStemmer(DutchStemmer stemmer)
public void setExclusionTable(java.util.HashSet exclusiontable)
public void setStemDictionary(java.util.HashMap dict)
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