Examples of org.apache.lucene.facet.FacetsConfig

org.apache.lucene.facet.FacetsConfig
Records per-dimension configuration. By default a dimension is flat, single valued and does not require count for the dimension; use the setters in this class to change these settings for each dim.
NOTE: this configuration is not saved into the index, but it's vital, and up to the application to ensure, that at search time the provided {@code FacetsConfig} matches what was used during indexing. @lucene.experimental


    // Writes facet ords to a separate directory from the
    // main index:
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);


    FacetsConfig config = new FacetsConfig();
    config.setHierarchical("Publish Date", true);


    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);


    Document doc = new Document();
    doc.add(new FacetField("Author", "Bob"));
    doc.add(new FacetField("Publish Date", "2010", "10", "15"));
    writer.addDocument(config.build(taxoWriter, doc));


    doc = new Document();
    doc.add(new FacetField("Author", "Lisa"));
    doc.add(new FacetField("Publish Date", "2010", "10", "20"));
    writer.addDocument(config.build(taxoWriter, doc));


    doc = new Document();
    doc.add(new FacetField("Author", "Lisa"));
    doc.add(new FacetField("Publish Date", "2012", "1", "1"));
    writer.addDocument(config.build(taxoWriter, doc));


    doc = new Document();
    doc.add(new FacetField("Author", "Susan"));
    doc.add(new FacetField("Publish Date", "2012", "1", "7"));
    writer.addDocument(config.build(taxoWriter, doc));


    doc = new Document();
    doc.add(new FacetField("Author", "Frank"));
    doc.add(new FacetField("Publish Date", "1999", "5", "5"));
    writer.addDocument(config.build(taxoWriter, doc));


    // NRT open
    IndexSearcher searcher = newSearcher(writer.getReader());


    // NRT open

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    // Writes facet ords to a separate directory from the
    // main index:
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);


    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);
    FacetsConfig config = new FacetsConfig();


    Document doc = new Document();
    doc.add(new FacetField("a", "foo1"));
    writer.addDocument(config.build(taxoWriter, doc));


    if (random().nextBoolean()) {
      writer.commit();
    }


    doc = new Document();
    doc.add(new FacetField("a", "foo2"));
    doc.add(new FacetField("b", "bar1"));
    writer.addDocument(config.build(taxoWriter, doc));


    if (random().nextBoolean()) {
      writer.commit();
    }


    doc = new Document();
    doc.add(new FacetField("a", "foo3"));
    doc.add(new FacetField("b", "bar2"));
    doc.add(new FacetField("c", "baz1"));
    writer.addDocument(config.build(taxoWriter, doc));


    // NRT open
    IndexSearcher searcher = newSearcher(writer.getReader());


    // NRT open
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoWriter);


    FacetsCollector c = new FacetsCollector();
    searcher.search(new MatchAllDocsQuery(), c);    


    Facets facets = getTaxonomyFacetCounts(taxoReader, new FacetsConfig(), c);


    // Ask for top 10 labels for any dims that have counts:
    List<FacetResult> results = facets.getAllDims(10);


    assertEquals(3, results.size());

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    // Writes facet ords to a separate directory from the
    // main index:
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);


    FacetsConfig config = new FacetsConfig();
    config.setIndexFieldName("a", "$facets2");
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);


    Document doc = new Document();
    doc.add(new FacetField("a", "foo1"));
    writer.addDocument(config.build(taxoWriter, doc));


    // NRT open
    IndexSearcher searcher = newSearcher(writer.getReader());


    // NRT open

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          return sim;
        }
      });
    TaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, iwc);
    FacetsConfig config = new FacetsConfig();


    Document doc = new Document();
    doc.add(newTextField("field", "text", Field.Store.NO));
    doc.add(new FacetField("a", "path"));
    writer.addDocument(config.build(taxoWriter, doc));
    IOUtils.close(writer, taxoWriter, dir, taxoDir);
  }

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  public void testMultiValuedHierarchy() throws Exception {
    Directory dir = newDirectory();
    Directory taxoDir = newDirectory();
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);
    FacetsConfig config = new FacetsConfig();
    config.setHierarchical("a", true);
    config.setMultiValued("a", true);
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);


    Document doc = new Document();
    doc.add(newTextField("field", "text", Field.Store.NO));
    doc.add(new FacetField("a", "path", "x"));
    doc.add(new FacetField("a", "path", "y"));
    writer.addDocument(config.build(taxoWriter, doc));


    // NRT open
    IndexSearcher searcher = newSearcher(writer.getReader());


    // NRT open

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    Directory dir = newDirectory();
    Directory taxoDir = newDirectory();
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);


    FacetsConfig config = new FacetsConfig();
    config.setMultiValued("dim", true);


    Document doc = new Document();
    doc.add(newTextField("field", "text", Field.Store.NO));
    doc.add(new FacetField("dim", "test\u001Fone"));
    doc.add(new FacetField("dim", "test\u001Etwo"));
    writer.addDocument(config.build(taxoWriter, doc));


    // NRT open
    IndexSearcher searcher = newSearcher(writer.getReader());


    // NRT open

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    Directory dir = newDirectory();
    Directory taxoDir = newDirectory();
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);


    FacetsConfig config = new FacetsConfig();
    config.setRequireDimCount("dim", true);


    config.setMultiValued("dim2", true);
    config.setRequireDimCount("dim2", true);


    config.setMultiValued("dim3", true);
    config.setHierarchical("dim3", true);
    config.setRequireDimCount("dim3", true);


    Document doc = new Document();
    doc.add(newTextField("field", "text", Field.Store.NO));
    doc.add(new FacetField("dim", "a"));
    doc.add(new FacetField("dim2", "a"));
    doc.add(new FacetField("dim2", "b"));
    doc.add(new FacetField("dim3", "a", "b"));
    doc.add(new FacetField("dim3", "a", "c"));
    writer.addDocument(config.build(taxoWriter, doc));


    // NRT open
    IndexSearcher searcher = newSearcher(writer.getReader());


    // NRT open

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    Directory taxoDir = newDirectory();
    IndexWriterConfig iwc = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir, iwc);
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);


    FacetsConfig config = new FacetsConfig();
    config.setMultiValued("dim", true);
    
    int numLabels = _TestUtil.nextInt(random(), 40000, 100000);
    
    Document doc = new Document();
    doc.add(newTextField("field", "text", Field.Store.NO));
    for (int i = 0; i < numLabels; i++) {
      doc.add(new FacetField("dim", "" + i));
    }
    writer.addDocument(config.build(taxoWriter, doc));
    
    // NRT open
    IndexSearcher searcher = newSearcher(writer.getReader());
    
    // NRT open

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  public void testDetectHierarchicalField() throws Exception {
    Directory dir = newDirectory();
    Directory taxoDir = newDirectory();
    TaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);
    FacetsConfig config = new FacetsConfig();


    Document doc = new Document();
    doc.add(newTextField("field", "text", Field.Store.NO));
    doc.add(new FacetField("a", "path", "other"));
    try {
      config.build(taxoWriter, doc);
      fail("did not hit expected exception");
    } catch (IllegalArgumentException iae) {
      // expected
    }
    IOUtils.close(writer, taxoWriter, dir, taxoDir);

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  public void testDetectMultiValuedField() throws Exception {
    Directory dir = newDirectory();
    Directory taxoDir = newDirectory();
    TaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);
    FacetsConfig config = new FacetsConfig();


    Document doc = new Document();
    doc.add(newTextField("field", "text", Field.Store.NO));
    doc.add(new FacetField("a", "path"));
    doc.add(new FacetField("a", "path2"));
    try {
      config.build(taxoWriter, doc);
      fail("did not hit expected exception");
    } catch (IllegalArgumentException iae) {
      // expected
    }
    IOUtils.close(writer, taxoWriter, dir, taxoDir);

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