org.apache.lucene.analysis.nl

Class DutchAnalyzer

public class DutchAnalyzer extends Analyzer

Analyzer for Dutch language. Supports an external list of stopwords (words that will not be indexed at all), an external list of exclusions (word that will not be stemmed, but indexed) and an external list of word-stem pairs that overrule the algorithm (dictionary stemming). A default set of stopwords is used unless an alternative list is specified, the exclusion list is empty by default.

Author: Edwin de Jonge

Field Summary
static String[]	DUTCH_STOP_WORDS List of typical Dutch stopwords.

Constructor Summary
	DutchAnalyzer() Builds an analyzer with the default stop words (DUTCH_STOP_WORDS).
	DutchAnalyzer(String[] stopwords) Builds an analyzer with the given stop words.
	DutchAnalyzer(HashSet stopwords) Builds an analyzer with the given stop words.
	DutchAnalyzer(File stopwords) Builds an analyzer with the given stop words.

Method Summary
void	setStemDictionary(File stemdict) Reads a stemdictionary file , that overrules the stemming algorithm This is a textfile that contains per line word\tstem i.e: tabseperated
void	setStemExclusionTable(String[] exclusionlist) Builds an exclusionlist from an array of Strings.
void	setStemExclusionTable(HashSet exclusionlist) Builds an exclusionlist from a Hashtable.
void	setStemExclusionTable(File exclusionlist) Builds an exclusionlist from the words contained in the given file.
TokenStream	tokenStream(String fieldName, Reader reader) Creates a TokenStream which tokenizes all the text in the provided TextReader.