Examples of org.apache.lucene.facet.index.CategoryDocumentBuilder

org.apache.lucene.facet.index.CategoryDocumentBuilder
A utility class which allows attachment of {@link CategoryPath}s or {@link CategoryAttribute}s to a given document using a taxonomy.
Construction could be done with either a given {@link FacetIndexingParams} orthe default implementation {@link DefaultFacetIndexingParams}.
A CategoryDocumentBuilder can be reused by repeatedly setting the categories and building the document. Categories are provided either as {@link CategoryAttribute} elements through {@link #setCategories(Iterable)}, or as {@link CategoryPath} elements through{@link #setCategoryPaths(Iterable)}.
Note that both {@link #setCategories(Iterable)} and{@link #setCategoryPaths(Iterable)} return this{@link CategoryDocumentBuilder}, allowing the following pattern: {@code newCategoryDocumentBuilder(taxonomy, params).setCategories(categories).build(doc)}. @lucene.experimental

  /** Utility method to add a document and facets to an index/taxonomy. */
  static void addFacets(FacetIndexingParams iParams, IndexWriter iw,
                        TaxonomyWriter tw, String... strings) throws IOException {
    ArrayList<CategoryPath> cps = new ArrayList<CategoryPath>();
    cps.add(new CategoryPath(strings));
    CategoryDocumentBuilder builder = new CategoryDocumentBuilder(tw, iParams);
    iw.addDocument(builder.setCategoryPaths(cps).build(new Document()));
  }

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      CorruptIndexException {
    ArrayList<CategoryPath> cps = new ArrayList<CategoryPath>();
    CategoryPath cp = new CategoryPath(strings);
    cps.add(cp);
    Document d = new Document();
    new CategoryDocumentBuilder(tw, iParams).setCategoryPaths(cps).build(d);
    d.add(new Field("content", "alpha", Store.YES, Index.ANALYZED, TermVector.NO));
    iw.addDocument(d);
  }

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        paths.add(new CategoryPath("a"));
      }
      if (i % 5 == 0) { // 20
        paths.add(new CategoryPath("b"));
      }
      CategoryDocumentBuilder builder = new CategoryDocumentBuilder(taxoWriter);
      builder.setCategoryPaths(paths).build(doc);
      writer.addDocument(doc);
    }
    
    taxoWriter.close();
    reader = writer.getReader();

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    super.setup();
    // create the facets even if they should not be added - allows to measure the effect of just adding facets 
    facets = getRunData().getFacetSource().getNextFacets(facets);  
    withFacets = getRunData().getConfig().get("with.facets", true);
    if (withFacets) {
      categoryDocBuilder = new CategoryDocumentBuilder(getRunData().getTaxonomyWriter());
      categoryDocBuilder.setCategories(facets);
    }
  }

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    RandomIndexWriter writer = new RandomIndexWriter(random, indexDir, 
        newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random, MockTokenizer.KEYWORD, false)));
    TaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir);


    for (CategoryPath[] categories : perDocCategories) {
      writer.addDocument(new CategoryDocumentBuilder(taxoWriter, iParams)
          .setCategoryPaths(Arrays.asList(categories)).build(
              new Document()));


    }
    taxoWriter.commit();

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