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package org.crosswire.jsword.index.lucene.analysis; |
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import java.io.IOException; |
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import java.io.Reader; |
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import org.apache.lucene.analysis.LowerCaseTokenizer; |
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import org.apache.lucene.analysis.StopFilter; |
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import org.apache.lucene.analysis.TokenStream; |
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import org.apache.lucene.analysis.de.GermanAnalyzer; |
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import org.apache.lucene.analysis.de.GermanStemFilter; |
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import org.apache.lucene.util.Version; |
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public class GermanLuceneAnalyzer extends AbstractBookAnalyzer { |
39 | 0 | public GermanLuceneAnalyzer() { |
40 | 0 | stopSet = GermanAnalyzer.getDefaultStopSet(); |
41 | 0 | } |
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@Override |
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public TokenStream tokenStream(String fieldName, Reader reader) { |
48 | 0 | TokenStream result = new LowerCaseTokenizer(reader); |
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50 | 0 | if (doStopWords && stopSet != null) { |
51 | 0 | result = new StopFilter(false, result, stopSet); |
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} |
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54 | 0 | if (doStemming) { |
55 | 0 | result = new GermanStemFilter(result); |
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} |
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58 | 0 | return result; |
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} |
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@Override |
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public TokenStream reusableTokenStream(String fieldName, Reader reader) throws IOException { |
66 | 0 | SavedStreams streams = (SavedStreams) getPreviousTokenStream(); |
67 | 0 | if (streams == null) { |
68 | 0 | streams = new SavedStreams(new LowerCaseTokenizer(reader)); |
69 | 0 | if (doStopWords && stopSet != null) { |
70 | 0 | streams.setResult(new StopFilter(StopFilter.getEnablePositionIncrementsVersionDefault(matchVersion), streams.getResult(), stopSet)); |
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} |
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73 | 0 | if (doStemming) { |
74 | 0 | streams.setResult(new GermanStemFilter(streams.getResult())); |
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} |
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77 | 0 | setPreviousTokenStream(streams); |
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} else { |
79 | 0 | streams.getSource().reset(reader); |
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} |
81 | 0 | return streams.getResult(); |
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} |
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84 | 0 | private final Version matchVersion = Version.LUCENE_29; |
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} |