Examples of org.apache.lucene.facet.DrillDownQuery

org.apache.lucene.facet.DrillDownQuery
A {@link Query} for drill-down over facet categories. Youshould call {@link #add(String,String)} for every group of categories youwant to drill-down over.
NOTE: if you choose to create your own {@link Query} by calling{@link #term}, it is recommended to wrap it with {@link ConstantScoreQuery}and set the {@link ConstantScoreQuery#setBoost(float) boost} to {@code 0.0f}, so that it does not affect the scores of the documents. @lucene.experimental

    IOUtils.close(indexWriter, taxoWriter);
    
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    DrillDownQuery ddq = new DrillDownQuery(new FacetsConfig());
    ddq.add("dim", bigs);
    assertEquals(1, searcher.search(ddq, 10).totalHits);
    
    IOUtils.close(indexReader, taxoReader, indexDir, taxoDir);
  }

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    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);


    // Passing no baseQuery means we drill down on all
    // documents ("browse only"):
    DrillDownQuery q = new DrillDownQuery(config);


    // Now user drills down on Publish Date/2010:
    q.add("Publish Date", "2010");


    DrillSideways ds = new DrillSideways(searcher, config, taxoReader);
    DrillSidewaysResult result = ds.search(q, 10);


    // Retrieve results

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        FacetsCollector fc = new FacetsCollector();
        searcher.search(new MatchAllDocsQuery(), fc);
        Facets facets = new FastTaxonomyFacetCounts(taxoReader, config, fc);
        assertEquals(1, facets.getSpecificValue("A", Integer.toString(id, 16)).intValue());
        
        DrillDownQuery drillDown = new DrillDownQuery(config);
        drillDown.add("A", Integer.toString(id, 16));
        TopDocs docs = searcher.search(drillDown, 10);
        assertEquals(1, docs.totalHits);
      }
      return null;
    }

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          return random().nextBoolean();
        }
      };


    // First search, no drill downs:
    DrillDownQuery ddq = new DrillDownQuery(config);
    DrillSidewaysResult dsr = ds.search(null, ddq, 10);


    assertEquals(100, dsr.hits.totalHits);
    assertEquals("dim=dim path=[] value=100 childCount=2\n  b (75)\n  a (25)\n", dsr.facets.getTopChildren(10, "dim").toString());
    assertEquals("dim=field path=[] value=21 childCount=5\n  less than 10 (10)\n  less than or equal to 10 (11)\n  over 90 (9)\n  90 or above (10)\n  over 1000 (0)\n",
                 dsr.facets.getTopChildren(10, "field").toString());


    // Second search, drill down on dim=b:
    ddq = new DrillDownQuery(config);
    ddq.add("dim", "b");
    dsr = ds.search(null, ddq, 10);


    assertEquals(75, dsr.hits.totalHits);
    assertEquals("dim=dim path=[] value=100 childCount=2\n  b (75)\n  a (25)\n", dsr.facets.getTopChildren(10, "dim").toString());
    assertEquals("dim=field path=[] value=16 childCount=5\n  less than 10 (7)\n  less than or equal to 10 (8)\n  over 90 (7)\n  90 or above (8)\n  over 1000 (0)\n",
                 dsr.facets.getTopChildren(10, "field").toString());


    // Third search, drill down on "less than or equal to 10":
    ddq = new DrillDownQuery(config);
    ddq.add("field", NumericRangeQuery.newLongRange("field", 0L, 10L, true, true));
    dsr = ds.search(null, ddq, 10);


    assertEquals(11, dsr.hits.totalHits);
    assertEquals("dim=dim path=[] value=11 childCount=2\n  b (8)\n  a (3)\n", dsr.facets.getTopChildren(10, "dim").toString());
    assertEquals("dim=field path=[] value=21 childCount=5\n  less than 10 (10)\n  less than or equal to 10 (11)\n  over 90 (9)\n  90 or above (10)\n  over 1000 (0)\n",

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    // Retrieve & verify results:
    assertEquals("dim=Publish Date path=[] value=5 childCount=3\n  2010 (2)\n  2012 (2)\n  1999 (1)\n", facets.getTopChildren(10, "Publish Date").toString());
    assertEquals("dim=Author path=[] value=5 childCount=4\n  Lisa (2)\n  Bob (1)\n  Susan (1)\n  Frank (1)\n", facets.getTopChildren(10, "Author").toString());


    // Now user drills down on Publish Date/2010:
    DrillDownQuery q2 = new DrillDownQuery(config);
    q2.add("Publish Date", "2010");
    c = new FacetsCollector();
    searcher.search(q2, c);
    facets = new FastTaxonomyFacetCounts(taxoReader, config, c);
    assertEquals("dim=Author path=[] value=2 childCount=2\n  Bob (1)\n  Lisa (1)\n", facets.getTopChildren(10, "Author").toString());

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    assertEquals("dim=a path=[] value=4 childCount=3\n  foo (2)\n  bar (1)\n  zoo (1)\n", facets.getTopChildren(10, "a").toString());
    assertEquals("dim=b path=[] value=1 childCount=1\n  baz (1)\n", facets.getTopChildren(10, "b").toString());


    // DrillDown:
    DrillDownQuery q = new DrillDownQuery(config);
    q.add("a", "foo");
    q.add("b", "baz");
    TopDocs hits = searcher.search(q, 1);
    assertEquals(1, hits.totalHits);


    IOUtils.close(writer, searcher.getIndexReader(), dir);
  }

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    // Retrieve & verify results:
    assertEquals("dim=Publish Date path=[] value=5 childCount=3\n  2010 (2)\n  2012 (2)\n  1999 (1)\n", facets.getTopChildren(10, "Publish Date").toString());
    assertEquals("dim=Author path=[] value=5 childCount=4\n  Lisa (2)\n  Bob (1)\n  Susan (1)\n  Frank (1)\n", facets.getTopChildren(10, "Author").toString());


    // Now user drills down on Publish Date/2010:
    DrillDownQuery q2 = new DrillDownQuery(config);
    q2.add("Publish Date", "2010");
    c = new FacetsCollector();
    searcher.search(q2, c);
    facets = new FastTaxonomyFacetCounts(taxoReader, config, c);
    assertEquals("dim=Author path=[] value=2 childCount=2\n  Bob (1)\n  Lisa (1)\n", facets.getTopChildren(10, "Author").toString());

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  public void testIntSumAssociationDrillDown() throws Exception {
    FacetsCollector fc = new FacetsCollector();
    
    IndexSearcher searcher = newSearcher(reader);
    DrillDownQuery q = new DrillDownQuery(config);
    q.add("int", "b");
    searcher.search(q, fc);


    Facets facets = new TaxonomyFacetSumIntAssociations("$facets.int", taxoReader, config, fc);
    assertEquals("dim=int path=[] value=-1 childCount=2\n  b (150)\n  a (100)\n", facets.getTopChildren(10, "int").toString());
    assertEquals("Wrong count for category 'a'!", 100, facets.getSpecificValue("int", "a").intValue());

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          return random().nextBoolean();
        }
      };


    // First search, no drill downs:
    DrillDownQuery ddq = new DrillDownQuery(config);
    DrillSidewaysResult dsr = ds.search(null, ddq, 10);


    assertEquals(100, dsr.hits.totalHits);
    assertEquals("dim=dim path=[] value=100 childCount=2\n  b (75)\n  a (25)\n", dsr.facets.getTopChildren(10, "dim").toString());
    assertEquals("dim=field path=[] value=21 childCount=5\n  less than 10 (10)\n  less than or equal to 10 (11)\n  over 90 (9)\n  90 or above (10)\n  over 1000 (0)\n",
                 dsr.facets.getTopChildren(10, "field").toString());


    // Second search, drill down on dim=b:
    ddq = new DrillDownQuery(config);
    ddq.add("dim", "b");
    dsr = ds.search(null, ddq, 10);


    assertEquals(75, dsr.hits.totalHits);
    assertEquals("dim=dim path=[] value=100 childCount=2\n  b (75)\n  a (25)\n", dsr.facets.getTopChildren(10, "dim").toString());
    assertEquals("dim=field path=[] value=16 childCount=5\n  less than 10 (7)\n  less than or equal to 10 (8)\n  over 90 (7)\n  90 or above (8)\n  over 1000 (0)\n",
                 dsr.facets.getTopChildren(10, "field").toString());


    // Third search, drill down on "less than or equal to 10":
    ddq = new DrillDownQuery(config);
    ddq.add("field", NumericRangeQuery.newLongRange("field", 0L, 10L, true, true));
    dsr = ds.search(null, ddq, 10);


    assertEquals(11, dsr.hits.totalHits);
    assertEquals("dim=dim path=[] value=11 childCount=2\n  b (8)\n  a (3)\n", dsr.facets.getTopChildren(10, "dim").toString());
    assertEquals("dim=field path=[] value=21 childCount=5\n  less than 10 (10)\n  less than or equal to 10 (11)\n  over 90 (9)\n  90 or above (10)\n  over 1000 (0)\n",

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        assertEquals(expectedCounts[rangeID], subNode.value.intValue());


        LongRange range = ranges[rangeID];


        // Test drill-down:
        DrillDownQuery ddq = new DrillDownQuery(config);
        if (random().nextBoolean()) {
          if (random().nextBoolean()) {
            ddq.add("field", NumericRangeFilter.newLongRange("field", range.min, range.max, range.minInclusive, range.maxInclusive));
          } else {
            ddq.add("field", NumericRangeQuery.newLongRange("field", range.min, range.max, range.minInclusive, range.maxInclusive));
          }
        } else {
          ddq.add("field", range.getFilter(fastMatchFilter, vs));
        }
        assertEquals(expectedCounts[rangeID], s.search(ddq, 10).totalHits);
      }
    }

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Related Classes of org.apache.lucene.facet.DrillDownQuery

org.apache.lucene.demo.facet.AssociationsFacetsExample

org.apache.lucene.demo.facet.DistanceFacetsExample

org.apache.lucene.demo.facet.RangeFacetsExample

org.apache.lucene.demo.facet.SimpleFacetsExample

org.apache.lucene.demo.facet.SimpleSortedSetFacetsExample

org.apache.lucene.facet.range.TestRangeFacetCounts

org.apache.lucene.facet.sortedset.TestSortedSetDocValuesFacets

org.apache.lucene.facet.taxonomy.directory.TestDirectoryTaxonomyWriter

org.apache.lucene.facet.taxonomy.TestTaxonomyFacetAssociations

org.apache.lucene.facet.taxonomy.TestTaxonomyFacetCounts

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