Examples of org.apache.lucene.util.AttributeSource.addAttribute()

Class org.apache.lucene.util.AttributeSource

Examples of org.apache.lucene.util.AttributeSource.addAttribute()

org.apache.lucene.util.AttributeSource.addAttribute()
The caller must pass in a Class<? extends Attribute> value. This method first checks if an instance of that class is already in this AttributeSource and returns it. Otherwise a new instance is created, added to this AttributeSource and returned.

  private DocsEnum getOther(DocsEnum de) {
    if (de == null) {
      return null;
    } else {
      final AttributeSource atts = de.attributes();
      return atts.addAttribute(PulsingEnumAttribute.class).enums().get(this);
    }
  }
  
  /** 
   * for a docsenum, sets the 'other' reused enum.

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   * for a docsenum, sets the 'other' reused enum.
   * see getOther for an example.
   */
  private DocsEnum setOther(DocsEnum de, DocsEnum other) {
    final AttributeSource atts = de.attributes();
    return atts.addAttribute(PulsingEnumAttribute.class).enums().put(this, other);
  }


  /** 
   * A per-docsenum attribute that stores additional reuse information
   * so that pulsing enums can keep a reference to their wrapped enums,

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          ScoreTermQueue variantsQ = new ScoreTermQueue(MAX_VARIANTS_PER_TERM); //maxNum variants considered for any one term
          float minScore = 0;
          Term startTerm = new Term(f.fieldName, term);
          AttributeSource atts = new AttributeSource();
          MaxNonCompetitiveBoostAttribute maxBoostAtt =
            atts.addAttribute(MaxNonCompetitiveBoostAttribute.class);
          SlowFuzzyTermsEnum fe = new SlowFuzzyTermsEnum(terms, atts, startTerm, f.minSimilarity, f.prefixLength);
          //store the df so all variants use same idf
          int df = reader.docFreq(startTerm);
          int numVariants = 0;
          int totalVariantDocFreqs = 0;

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  protected Collection<ScoreTerm> suggestSimilar(Term term, int numSug, IndexReader ir, int docfreq, int editDistance,
                                                 float accuracy, final CharsRef spare) throws IOException {
    
    AttributeSource atts = new AttributeSource();
    MaxNonCompetitiveBoostAttribute maxBoostAtt =
      atts.addAttribute(MaxNonCompetitiveBoostAttribute.class);
    Terms terms = MultiFields.getTerms(ir, term.field());
    if (terms == null) {
      return Collections.emptyList();
    }
    FuzzyTermsEnum e = new FuzzyTermsEnum(terms, atts, term, editDistance, Math.max(minPrefix, editDistance-1), true);

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