Examples with StopFilter org.apache.lucene.analysis.StopFilter used on opensource projects

Example 16 with StopFilter

use of org.apache.lucene.analysis.StopFilter in project lucene-solr by apache.

the class ItalianAnalyzer method createComponents.

/**
   * Creates a
   * {@link org.apache.lucene.analysis.Analyzer.TokenStreamComponents}
   * which tokenizes all the text in the provided {@link Reader}.
   * 
   * @return A
   *         {@link org.apache.lucene.analysis.Analyzer.TokenStreamComponents}
   *         built from an {@link StandardTokenizer} filtered with
   *         {@link StandardFilter}, {@link ElisionFilter}, {@link LowerCaseFilter}, {@link StopFilter}
   *         , {@link SetKeywordMarkerFilter} if a stem exclusion set is
   *         provided and {@link ItalianLightStemFilter}.
   */
@Override
protected TokenStreamComponents createComponents(String fieldName) {
    final Tokenizer source = new StandardTokenizer();
    TokenStream result = new StandardFilter(source);
    result = new ElisionFilter(result, DEFAULT_ARTICLES);
    result = new LowerCaseFilter(result);
    result = new StopFilter(result, stopwords);
    if (!stemExclusionSet.isEmpty())
        result = new SetKeywordMarkerFilter(result, stemExclusionSet);
    result = new ItalianLightStemFilter(result);
    return new TokenStreamComponents(source, result);
}

Example 17 with StopFilter

use of org.apache.lucene.analysis.StopFilter in project lucene-solr by apache.

the class RussianAnalyzer method createComponents.

/**
   * Creates
   * {@link org.apache.lucene.analysis.Analyzer.TokenStreamComponents}
   * used to tokenize all the text in the provided {@link Reader}.
   * 
   * @return {@link org.apache.lucene.analysis.Analyzer.TokenStreamComponents}
   *         built from a {@link StandardTokenizer} filtered with
   *         {@link StandardFilter}, {@link LowerCaseFilter}, {@link StopFilter}
   *         , {@link SetKeywordMarkerFilter} if a stem exclusion set is
   *         provided, and {@link SnowballFilter}
   */
@Override
protected TokenStreamComponents createComponents(String fieldName) {
    final Tokenizer source = new StandardTokenizer();
    TokenStream result = new StandardFilter(source);
    result = new LowerCaseFilter(result);
    result = new StopFilter(result, stopwords);
    if (!stemExclusionSet.isEmpty())
        result = new SetKeywordMarkerFilter(result, stemExclusionSet);
    result = new SnowballFilter(result, new org.tartarus.snowball.ext.RussianStemmer());
    return new TokenStreamComponents(source, result);
}

Example 18 with StopFilter

use of org.apache.lucene.analysis.StopFilter in project lucene-solr by apache.

the class ClassicAnalyzer method createComponents.

@Override
protected TokenStreamComponents createComponents(final String fieldName) {
    final ClassicTokenizer src = new ClassicTokenizer();
    src.setMaxTokenLength(maxTokenLength);
    TokenStream tok = new ClassicFilter(src);
    tok = new LowerCaseFilter(tok);
    tok = new StopFilter(tok, stopwords);
    return new TokenStreamComponents(src, tok) {

        @Override
        protected void setReader(final Reader reader) {
            src.setMaxTokenLength(ClassicAnalyzer.this.maxTokenLength);
            super.setReader(reader);
        }
    };
}

Example 19 with StopFilter

use of org.apache.lucene.analysis.StopFilter in project lucene-solr by apache.

the class CJKAnalyzer method createComponents.

@Override
protected TokenStreamComponents createComponents(String fieldName) {
    final Tokenizer source = new StandardTokenizer();
    // run the widthfilter first before bigramming, it sometimes combines characters.
    TokenStream result = new CJKWidthFilter(source);
    result = new LowerCaseFilter(result);
    result = new CJKBigramFilter(result);
    return new TokenStreamComponents(source, new StopFilter(result, stopwords));
}

Example 20 with StopFilter

use of org.apache.lucene.analysis.StopFilter in project lucene-solr by apache.

the class ArabicAnalyzer method createComponents.

/**
   * Creates
   * {@link org.apache.lucene.analysis.Analyzer.TokenStreamComponents}
   * used to tokenize all the text in the provided {@link Reader}.
   * 
   * @return {@link org.apache.lucene.analysis.Analyzer.TokenStreamComponents}
   *         built from an {@link StandardTokenizer} filtered with
   *         {@link LowerCaseFilter}, {@link DecimalDigitFilter}, {@link StopFilter},
   *         {@link ArabicNormalizationFilter}, {@link SetKeywordMarkerFilter}
   *         if a stem exclusion set is provided and {@link ArabicStemFilter}.
   */
@Override
protected TokenStreamComponents createComponents(String fieldName) {
    final Tokenizer source = new StandardTokenizer();
    TokenStream result = new LowerCaseFilter(source);
    result = new DecimalDigitFilter(result);
    // the order here is important: the stopword list is not normalized!
    result = new StopFilter(result, stopwords);
    // TODO maybe we should make ArabicNormalization filter also KeywordAttribute aware?!
    result = new ArabicNormalizationFilter(result);
    if (!stemExclusionSet.isEmpty()) {
        result = new SetKeywordMarkerFilter(result, stemExclusionSet);
    }
    return new TokenStreamComponents(source, new ArabicStemFilter(result));
}