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

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


        DoubleRange range = ranges[rangeID];


        // Test drill-down:
        DrillDownQuery ddq = new DrillDownQuery(config);
        if (random().nextBoolean()) {
          if (random().nextBoolean()) {
            ddq.add("field", NumericRangeFilter.newFloatRange("field", (float) range.min, (float) range.max, range.minInclusive, range.maxInclusive));
          } else {
            ddq.add("field", NumericRangeQuery.newFloatRange("field", (float) range.min, (float) 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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        assertEquals(expectedCounts[rangeID], subNode.value.intValue());


        DoubleRange range = ranges[rangeID];


        // Test drill-down:
        DrillDownQuery ddq = new DrillDownQuery(config);
        if (random().nextBoolean()) {
          if (random().nextBoolean()) {
            ddq.add("field", NumericRangeFilter.newDoubleRange("field", range.min, range.max, range.minInclusive, range.maxInclusive));
          } else {
            ddq.add("field", NumericRangeQuery.newDoubleRange("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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    Facets facets = new DoubleRangeFacetCounts("field", vs, fc, fastMatchFilter, ranges);


    assertEquals("dim=field path=[] value=3 childCount=6\n  < 1 (0)\n  < 2 (1)\n  < 5 (3)\n  < 10 (3)\n  < 20 (3)\n  < 50 (3)\n", facets.getTopChildren(10, "field").toString());
    assertTrue(fastMatchFilter == null || filterWasUsed.get());


    DrillDownQuery ddq = new DrillDownQuery(config);
    ddq.add("field", ranges[1].getFilter(fastMatchFilter, vs));


    // Test simple drill-down:
    assertEquals(1, s.search(ddq, 10).totalHits);


    // Test drill-sideways after drill-down

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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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    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    SortedSetDocValuesReaderState state = new DefaultSortedSetDocValuesReaderState(indexReader);


    // Now user drills down on Publish Year/2010:
    DrillDownQuery q = new DrillDownQuery(config);
    q.add("Publish Year", "2010");
    FacetsCollector fc = new FacetsCollector();
    FacetsCollector.search(searcher, q, 10, fc);


    // Retrieve results
    Facets facets = new SortedSetDocValuesFacetCounts(state, fc);

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  /** User drills down on the specified range. */
  public TopDocs drillDown(DoubleRange range) throws IOException {


    // Passing no baseQuery means we drill down on all
    // documents ("browse only"):
    DrillDownQuery q = new DrillDownQuery(null);
    final ValueSource vs = getDistanceValueSource();
    q.add("field", range.getFilter(getBoundingBoxFilter(ORIGIN_LATITUDE, ORIGIN_LONGITUDE, range.max), vs));
    DrillSideways ds = new DrillSideways(searcher, config, (TaxonomyReader) null) {
        @Override
        protected Facets buildFacetsResult(FacetsCollector drillDowns, FacetsCollector[] drillSideways, String[] drillSidewaysDims) throws IOException {        
          assert drillSideways.length == 1;
          return new DoubleRangeFacetCounts("field", vs, drillSideways[0], ONE_KM, TWO_KM, FIVE_KM, TEN_KM);

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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("tags", "solr");
    FacetsCollector fc = new FacetsCollector();
    FacetsCollector.search(searcher, q, 10, fc);


    // Retrieve results
    Facets facets = new TaxonomyFacetSumFloatAssociations("$genre", taxoReader, config, fc);

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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");
    FacetsCollector fc = new FacetsCollector();
    FacetsCollector.search(searcher, q, 10, fc);


    // Retrieve results
    Facets facets = new FastTaxonomyFacetCounts(taxoReader, config, fc);

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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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