Package org.apache.lucene.analysis.Analyzer

Examples of org.apache.lucene.analysis.Analyzer.TokenStreamComponents

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  public void checkRandomStrings(final String snowballLanguage) throws IOException {
    Analyzer a = new Analyzer() {
      @Override
      protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
        Tokenizer t = new MockTokenizer(reader);
        return new TokenStreamComponents(t, new SnowballFilter(t, snowballLanguage));
      } 
    };
    checkRandomData(random(), a, 1000*RANDOM_MULTIPLIER);
  }
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  public void testRandomStrings() throws Exception {
    Analyzer a = new Analyzer() {
      @Override
      protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
        Tokenizer tokenizer = new EdgeNGramTokenizer(reader, EdgeNGramTokenizer.Side.FRONT, 2, 4);
        return new TokenStreamComponents(tokenizer, tokenizer);
      }   
    };
    checkRandomData(random(), a, 1000*RANDOM_MULTIPLIER, 20, false, false);
    checkRandomData(random(), a, 100*RANDOM_MULTIPLIER, 8192, false, false);
   
    Analyzer b = new Analyzer() {
      @Override
      protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
        Tokenizer tokenizer = new EdgeNGramTokenizer(reader, EdgeNGramTokenizer.Side.BACK, 2, 4);
        return new TokenStreamComponents(tokenizer, tokenizer);
      }   
    };
    checkRandomData(random(), b, 1000*RANDOM_MULTIPLIER, 20, false, false);
    checkRandomData(random(), b, 100*RANDOM_MULTIPLIER, 8192, false, false);
  }
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    /* analyzer that uses whitespace + wdf */
    Analyzer a = new Analyzer() {
      @Override
      public TokenStreamComponents createComponents(String field, Reader reader) {
        Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
        return new TokenStreamComponents(tokenizer, new WordDelimiterFilter(
            tokenizer,
            flags, protWords));
      }
    };

    /* in this case, works as expected. */
    assertAnalyzesTo(a, "LUCENE / SOLR", new String[] { "LUCENE", "SOLR" },
        new int[] { 0, 9 },
        new int[] { 6, 13 },
        null,
        new int[] { 1, 1 },
        null,
        false);
   
    /* only in this case, posInc of 2 ?! */
    assertAnalyzesTo(a, "LUCENE / solR", new String[] { "LUCENE", "sol", "R", "solR" },
        new int[] { 0, 9, 12, 9 },
        new int[] { 6, 12, 13, 13 },
        null,
        new int[] { 1, 1, 1, 0 },
        null,
        false);
   
    assertAnalyzesTo(a, "LUCENE / NUTCH SOLR", new String[] { "LUCENE", "NUTCH", "SOLR" },
        new int[] { 0, 9, 15 },
        new int[] { 6, 14, 19 },
        null,
        new int[] { 1, 1, 1 },
        null,
        false);
   
    /* analyzer that will consume tokens with large position increments */
    Analyzer a2 = new Analyzer() {
      @Override
      public TokenStreamComponents createComponents(String field, Reader reader) {
        Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
        return new TokenStreamComponents(tokenizer, new WordDelimiterFilter(
            new LargePosIncTokenFilter(tokenizer),
            flags, protWords));
      }
    };
   
    /* increment of "largegap" is preserved */
    assertAnalyzesTo(a2, "LUCENE largegap SOLR", new String[] { "LUCENE", "largegap", "SOLR" },
        new int[] { 0, 7, 16 },
        new int[] { 6, 15, 20 },
        null,
        new int[] { 1, 10, 1 },
        null,
        false);
   
    /* the "/" had a position increment of 10, where did it go?!?!! */
    assertAnalyzesTo(a2, "LUCENE / SOLR", new String[] { "LUCENE", "SOLR" },
        new int[] { 0, 9 },
        new int[] { 6, 13 },
        null,
        new int[] { 1, 11 },
        null,
        false);
   
    /* in this case, the increment of 10 from the "/" is carried over */
    assertAnalyzesTo(a2, "LUCENE / solR", new String[] { "LUCENE", "sol", "R", "solR" },
        new int[] { 0, 9, 12, 9 },
        new int[] { 6, 12, 13, 13 },
        null,
        new int[] { 1, 11, 1, 0 },
        null,
        false);
   
    assertAnalyzesTo(a2, "LUCENE / NUTCH SOLR", new String[] { "LUCENE", "NUTCH", "SOLR" },
        new int[] { 0, 9, 15 },
        new int[] { 6, 14, 19 },
        null,
        new int[] { 1, 11, 1 },
        null,
        false);

    Analyzer a3 = new Analyzer() {
      @Override
      public TokenStreamComponents createComponents(String field, Reader reader) {
        Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
        StopFilter filter = new StopFilter(TEST_VERSION_CURRENT,
            tokenizer, StandardAnalyzer.STOP_WORDS_SET);
        filter.setEnablePositionIncrements(true);
        return new TokenStreamComponents(tokenizer, new WordDelimiterFilter(filter, flags, protWords));
      }
    };

    assertAnalyzesTo(a3, "lucene.solr",
        new String[] { "lucene", "solr", "lucenesolr" },
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      Analyzer a = new Analyzer() {
       
        @Override
        protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
          Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
          return new TokenStreamComponents(tokenizer, new WordDelimiterFilter(tokenizer, flags, protectedWords));
        }
      };
      checkRandomData(random(), a, 200, 20, false, false);
    }
  }
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      Analyzer a = new Analyzer() {
        @Override
        protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
          Tokenizer tokenizer = new KeywordTokenizer(reader);
          return new TokenStreamComponents(tokenizer, new WordDelimiterFilter(tokenizer, flags, protectedWords));
        }
      };
      // depending upon options, this thing may or may not preserve the empty term
      checkAnalysisConsistency(random, a, random.nextBoolean(), "");
    }
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    Analyzer analyzer = new Analyzer() {
      @Override
      protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
        Tokenizer tokenizer = factory == null ? new WhitespaceTokenizer(Version.LUCENE_43, reader) : factory.create(reader);
        TokenStream stream = ignoreCase ? new LowerCaseFilter(Version.LUCENE_43, tokenizer) : tokenizer;
        return new TokenStreamComponents(tokenizer, stream);
      }
    };

    try {
      if (format == null || format.equals("solr")) {
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    }

    @Override
    public TokenStreamComponents createComponents(String fieldName, Reader reader) {
        if ("full".equals(fieldName)) {
            return new TokenStreamComponents(new TroffFullTokenizer(reader));
        }
        return super.createComponents(fieldName, reader);
    }
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    }

    @Override
    public TokenStreamComponents createComponents(String fieldName, Reader reader) {
        if ("full".equals(fieldName)) {
            return new TokenStreamComponents(new UuencodeFullTokenizer(reader));
        }
        return super.createComponents(fieldName, reader);
    }
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    Analyzer analyzer = new Analyzer() {
      @Override
      protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
        Tokenizer tokenizer = factory == null ? new WhitespaceTokenizer(Version.LUCENE_CURRENT, reader) : factory.create(reader);
        TokenStream stream = ignoreCase ? new LowerCaseFilter(Version.LUCENE_CURRENT, tokenizer) : tokenizer;
        return new TokenStreamComponents(tokenizer, stream);
      }
    };

    try {
      String formatClass = format;
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    for (final String lang : SNOWBALL_LANGS) {
      Analyzer a = new Analyzer() {
        @Override
        protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
          Tokenizer tokenizer = new KeywordTokenizer(reader);
          return new TokenStreamComponents(tokenizer, new SnowballFilter(tokenizer, lang));
        }
      };
      checkOneTerm(a, "", "");
    }
  }
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Related Classes of org.apache.lucene.analysis.Analyzer.TokenStreamComponents

  • org.apache.lucene.analysis.miscellaneous.TestWordDelimiterFilter
  • org.apache.lucene.analysis.ngram.EdgeNGramTokenizerTest
  • org.apache.lucene.analysis.path.TestReversePathHierarchyTokenizer
  • org.apache.lucene.analysis.pattern.TestPatternTokenizer
  • org.apache.lucene.analysis.pt.TestPortugueseLightStemFilter
  • org.apache.lucene.analysis.pt.TestPortugueseMinimalStemFilter
  • org.apache.lucene.analysis.snowball.TestSnowball
  • org.apache.lucene.analysis.synonym.FSTSynonymFilterFactory
  • org.apache.lucene.codecs.idversion.TestIDVersionPostingsFormat
  • org.apache.lucene.index.TestPostingsOffsets
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