Java Code Examples for org.apache.lucene.analysis.en.PorterStemFilter

The following examples show how to use org.apache.lucene.analysis.en.PorterStemFilter. These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: lucene-solr   Source File: TestStemmerOverrideFilter.java    License: Apache License 2.0 5 votes vote down vote up
public void testOverride() throws IOException {
  // lets make booked stem to books
  // the override filter will convert "booked" to "books",
  // but also mark it with KeywordAttribute so Porter will not change it.
  StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder();
  builder.add("booked", "books");
  Tokenizer tokenizer = keywordTokenizer("booked");
  TokenStream stream = new PorterStemFilter(new StemmerOverrideFilter(
      tokenizer, builder.build()));
  assertTokenStreamContents(stream, new String[] {"books"});
}
 
Example 2
Source Project: lucene-solr   Source File: TestStemmerOverrideFilter.java    License: Apache License 2.0 5 votes vote down vote up
public void testIgnoreCase() throws IOException {
  // lets make booked stem to books
  // the override filter will convert "booked" to "books",
  // but also mark it with KeywordAttribute so Porter will not change it.
  StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(true);
  builder.add("boOkEd", "books");
  Tokenizer tokenizer = keywordTokenizer("BooKeD");
  TokenStream stream = new PorterStemFilter(new StemmerOverrideFilter(
      tokenizer, builder.build()));
  assertTokenStreamContents(stream, new String[] {"books"});
}
 
Example 3
Source Project: lucene-solr   Source File: TestStemmerOverrideFilter.java    License: Apache License 2.0 5 votes vote down vote up
public void testNoOverrides() throws IOException {
  StemmerOverrideFilter.Builder builder = new StemmerOverrideFilter.Builder(true);
  Tokenizer tokenizer = keywordTokenizer("book");
  TokenStream stream = new PorterStemFilter(new StemmerOverrideFilter(
      tokenizer, builder.build()));
  assertTokenStreamContents(stream, new String[] {"book"});
}
 
Example 4
Source Project: crate   Source File: CommonAnalysisPlugin.java    License: Apache License 2.0 5 votes vote down vote up
@Override
public List<PreConfiguredTokenFilter> getPreConfiguredTokenFilters() {
    List<PreConfiguredTokenFilter> filters = new ArrayList<>();
    filters.add(PreConfiguredTokenFilter.singleton("apostrophe", false, ApostropheFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("arabic_normalization", true, ArabicNormalizationFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("arabic_stem", false, ArabicStemFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("asciifolding", true, ASCIIFoldingFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("bengali_normalization", true, BengaliNormalizationFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("brazilian_stem", false, BrazilianStemFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("cjk_bigram", false, CJKBigramFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("cjk_width", true, CJKWidthFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("classic", false, ClassicFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton(
        "common_grams",
        false,
        input -> new CommonGramsFilter(input, CharArraySet.EMPTY_SET)));
    filters.add(PreConfiguredTokenFilter.singleton("czech_stem", false, CzechStemFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("decimal_digit", true, DecimalDigitFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("delimited_payload_filter", false, input ->
            new DelimitedPayloadTokenFilter(input,
                    DelimitedPayloadTokenFilterFactory.DEFAULT_DELIMITER,
                    DelimitedPayloadTokenFilterFactory.DEFAULT_ENCODER)));
    filters.add(PreConfiguredTokenFilter.singleton("delimited_payload", false, input ->
            new DelimitedPayloadTokenFilter(input,
                    DelimitedPayloadTokenFilterFactory.DEFAULT_DELIMITER,
                    DelimitedPayloadTokenFilterFactory.DEFAULT_ENCODER)));
    filters.add(PreConfiguredTokenFilter.singleton("dutch_stem", false, input -> new SnowballFilter(input, new DutchStemmer())));
    filters.add(PreConfiguredTokenFilter.singleton(
        "edge_ngram",
        false,
        input -> new EdgeNGramTokenFilter(input, EdgeNGramTokenFilterFactory.SIDE_FRONT, EdgeNGramTokenFilterFactory.SIDE_BACK, EdgeNGramTokenFilter.DEFAULT_PRESERVE_ORIGINAL)));
    filters.add(PreConfiguredTokenFilter.singleton(
        "elision",
        true,
        input -> new ElisionFilter(input, FrenchAnalyzer.DEFAULT_ARTICLES))
    );
    filters.add(PreConfiguredTokenFilter.singleton("french_stem", false, input -> new SnowballFilter(input, new FrenchStemmer())));
    filters.add(PreConfiguredTokenFilter.singleton("german_normalization", true, GermanNormalizationFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("german_stem", false, GermanStemFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("hindi_normalization", true, HindiNormalizationFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("indic_normalization", true, IndicNormalizationFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("keyword_repeat", false, KeywordRepeatFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("kstem", false, KStemFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("length", false, input ->
        new LengthFilter(input, 0, Integer.MAX_VALUE)));  // TODO this one seems useless
    filters.add(PreConfiguredTokenFilter.singleton(
        "limit",
        false,
        input -> new LimitTokenCountFilter(
            input,
            LimitTokenCountFilterFactory.DEFAULT_MAX_TOKEN_COUNT,
            LimitTokenCountFilterFactory.DEFAULT_CONSUME_ALL_TOKENS)
        )
    );
    filters.add(PreConfiguredTokenFilter.singleton("ngram", false, reader -> new NGramTokenFilter(reader, 1, 2, false)));
    filters.add(PreConfiguredTokenFilter.singleton("persian_normalization", true, PersianNormalizationFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("porter_stem", false, PorterStemFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("reverse", false, ReverseStringFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("russian_stem", false, input -> new SnowballFilter(input, "Russian")));
    filters.add(PreConfiguredTokenFilter.singleton("scandinavian_folding", true, ScandinavianFoldingFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("scandinavian_normalization", true, ScandinavianNormalizationFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("shingle", false, input -> {
        TokenStream ts = new ShingleFilter(input);
        /**
         * We disable the graph analysis on this token stream
         * because it produces shingles of different size.
         * Graph analysis on such token stream is useless and dangerous as it may create too many paths
         * since shingles of different size are not aligned in terms of positions.
         */
        ts.addAttribute(DisableGraphAttribute.class);
        return ts;
    }));
    filters.add(PreConfiguredTokenFilter.singleton("snowball", false, input -> new SnowballFilter(input, "English")));
    filters.add(PreConfiguredTokenFilter.singleton("sorani_normalization", true, SoraniNormalizationFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("stemmer", false, PorterStemFilter::new));
    // The stop filter is in lucene-core but the English stop words set is in lucene-analyzers-common
    filters.add(PreConfiguredTokenFilter.singleton("stop", false, input -> new StopFilter(input, EnglishAnalyzer.ENGLISH_STOP_WORDS_SET)));
    filters.add(PreConfiguredTokenFilter.singleton("trim", true, TrimFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("truncate", false, input -> new TruncateTokenFilter(input, 10)));
    filters.add(PreConfiguredTokenFilter.singleton("type_as_payload", false, TypeAsPayloadTokenFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("unique", false, UniqueTokenFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("uppercase", true, UpperCaseFilter::new));
    filters.add(PreConfiguredTokenFilter.singleton("word_delimiter", false, input ->
            new WordDelimiterFilter(input,
                    WordDelimiterFilter.GENERATE_WORD_PARTS
                  | WordDelimiterFilter.GENERATE_NUMBER_PARTS
                  | WordDelimiterFilter.SPLIT_ON_CASE_CHANGE
                  | WordDelimiterFilter.SPLIT_ON_NUMERICS
                  | WordDelimiterFilter.STEM_ENGLISH_POSSESSIVE, null)));
    filters.add(PreConfiguredTokenFilter.singleton("word_delimiter_graph", false, input ->
            new WordDelimiterGraphFilter(input,
                    WordDelimiterGraphFilter.GENERATE_WORD_PARTS
                  | WordDelimiterGraphFilter.GENERATE_NUMBER_PARTS
                  | WordDelimiterGraphFilter.SPLIT_ON_CASE_CHANGE
                  | WordDelimiterGraphFilter.SPLIT_ON_NUMERICS
                  | WordDelimiterGraphFilter.STEM_ENGLISH_POSSESSIVE, null)));
    return filters;
}
 
Example 5
@Override
public TokenStream create(TokenStream tokenStream) {
    return new PorterStemFilter(tokenStream);
}
 
Example 6
@Override
protected TokenStreamComponents createComponents(String s) {
  Tokenizer source = new LowerCaseTokenizer();
  return new TokenStreamComponents(source, new PorterStemFilter(source));
}
 
Example 7
Source Project: crate   Source File: PorterStemTokenFilterFactory.java    License: Apache License 2.0 4 votes vote down vote up
@Override
public TokenStream create(TokenStream tokenStream) {
    return new PorterStemFilter(tokenStream);
}