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

          }
          Term idTerm = new Term(idAttribute, bean.getString(idAttribute));
          Document docToUpdate = getUniqueDocument(indexReader, idTerm, crid);


          // get the category paths for the facets
          CategoryDocumentBuilder categoryDocBuilder = null;
          if (useFacets && taxonomyAccessor != null && taxonomyWriter != null) {
            List<CategoryPath> categories = getCategoryAttributeMapping(bean, taxonomyAccessor.getTaxonomyMappings());
            if (categories.size() > 0) {
              categoryDocBuilder = new CategoryDocumentBuilder(taxonomyWriter).setCategoryPaths(categories);
            }
          }
          if (!create && docToUpdate != null) {
            Document doc = getDocument(docToUpdate, bean, attributes, config, reverseattributes);
            // add facets to document
            if (categoryDocBuilder != null) {
              categoryDocBuilder.build(doc);
            }
            indexWriter.updateDocument(idTerm, doc);
          } else {
            Document doc = getDocument(null, bean, attributes, config, reverseattributes);
            // add facets to document
            if (categoryDocBuilder != null) {
              categoryDocBuilder.build(doc);
            }
            indexWriter.addDocument(doc);
          }
        } finally {
          bcase.stop();

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      }


      // we do not alter indexing parameters!
      // a category document builder will add the categories to a document
      // once build() is called
      CategoryDocumentBuilder categoryDocBuilder = new EnhancementsDocumentBuilder(
          taxo, AssociationUtils.assocIndexingParams);
      categoryDocBuilder.setCategories(categoryContainer);


      // create a plain Lucene document and add some regular Lucene fields
      // to it
      Document doc = new Document();
      doc.add(new Field(SimpleUtils.TITLE, SimpleUtils.docTitles[docNum],
          Store.YES, Index.ANALYZED));
      doc.add(new Field(SimpleUtils.TEXT, SimpleUtils.docTexts[docNum],
          Store.NO, Index.ANALYZED));


      // invoke the category document builder for adding categories to the
      // document and,
      // as required, to the taxonomy index
      categoryDocBuilder.build(doc);


      // finally add the document to the index
      iw.addDocument(doc);


      nDocsAdded++;

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      // obtain the sample facets for current document
      List<CategoryPath> facetList = SimpleUtils.categoryPathArrayToList(SimpleUtils.categories[docNum]);


      // we do not alter indexing parameters!  
      // a category document builder will add the categories to a document once build() is called
      DocumentBuilder categoryDocBuilder = new CategoryDocumentBuilder(taxo).setCategoryPaths(facetList);


      // create a plain Lucene document and add some regular Lucene fields to it 
      Document doc = new Document();
      doc.add(new Field(SimpleUtils.TITLE, SimpleUtils.docTitles[docNum], Store.YES, Index.ANALYZED));
      doc.add(new Field(SimpleUtils.TEXT, SimpleUtils.docTexts[docNum], Store.NO, Index.ANALYZED));

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


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


    }
    taxoWriter.commit();

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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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      List<CategoryPath> facetList = SimpleUtils.categoryPathArrayToList(cPaths[docNum]);


      // we do not alter indexing parameters!
      // a category document builder will add the categories to a document
      // once build() is called
      DocumentBuilder categoryDocBuilder = new CategoryDocumentBuilder(
          taxo, iParams).setCategoryPaths(facetList);


      // create a plain Lucene document and add some regular Lucene fields
      // to it
      Document doc = new Document();

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  /** 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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  /** utility Create a dummy document with specified categories and content */
  protected final void indexDoc(FacetIndexingParams iParams, RandomIndexWriter iw,
      TaxonomyWriter tw, String content, List<CategoryPath> categories) throws IOException,
      CorruptIndexException {
    Document d = new Document();
    CategoryDocumentBuilder builder = new CategoryDocumentBuilder(tw, iParams);
    builder.setCategoryPaths(categories);
    builder.build(d);
    d.add(new Field("content", content, Store.YES, Index.ANALYZED, TermVector.NO));
    iw.addDocument(d);
  }

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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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