Examples of org.apache.lucene.facet.search.DrillDownQuery

org.apache.lucene.facet.search.DrillDownQuery
A {@link Query} for drill-down over {@link CategoryPath categories}. You should call {@link #add(CategoryPath)} for every group of categories youwant to drill-down over. Each category in the group is {@code OR'ed} withthe others, and groups are {@code AND'ed}.
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

    dimCount = doDimCount ? 1 : 0;
    assertEquals("b" + FacetIndexingParams.DEFAULT_FACET_DELIM_CHAR + " (" + dimCount + ")\n  bazfoo (1)\n", FacetTestUtils.toSimpleString(results.get(2)));


    // DrillDown:


    DrillDownQuery q = new DrillDownQuery(fip);
    q.add(new CategoryPath("a", "foo"));
    q.add(new CategoryPath("b", "baz"));
    TopDocs hits = searcher.search(q, 1);
    assertEquals(1, hits.totalHits);


    q = new DrillDownQuery(fip);
    q.add(new CategoryPath("a"));
    hits = searcher.search(q, 1);
    assertEquals(2, hits.totalHits);


    searcher.getIndexReader().close();
    dir.close();

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


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


    assertEquals(100, dsr.hits.totalHits);
    assertEquals(2, dsr.facetResults.size());
    assertEquals("dim (0)\n  b (75)\n  a (25)\n", FacetTestUtils.toSimpleString(dsr.facetResults.get(0)));
    assertEquals("field (0)\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", FacetTestUtils.toSimpleString(dsr.facetResults.get(1)));


    // Second search, drill down on dim=b:
    ddq = new DrillDownQuery(FacetIndexingParams.DEFAULT, new MatchAllDocsQuery());
    ddq.add(new CategoryPath("dim", "b"));
    dimSeen.clear();
    dsr = ds.search(null, ddq, 10, fsp);


    assertEquals(75, dsr.hits.totalHits);
    assertEquals(2, dsr.facetResults.size());
    assertEquals("dim (0)\n  b (75)\n  a (25)\n", FacetTestUtils.toSimpleString(dsr.facetResults.get(0)));
    assertEquals("field (0)\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", FacetTestUtils.toSimpleString(dsr.facetResults.get(1)));


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


    assertEquals(11, dsr.hits.totalHits);
    assertEquals(2, dsr.facetResults.size());

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


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


    assertEquals(100, dsr.hits.totalHits);
    assertEquals(2, dsr.facetResults.size());
    assertEquals("dim (0)\n  b (75)\n  a (25)\n", FacetTestUtils.toSimpleString(dsr.facetResults.get(0)));
    assertEquals("field (0)\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", FacetTestUtils.toSimpleString(dsr.facetResults.get(1)));


    // Second search, drill down on dim=b:
    ddq = new DrillDownQuery(FacetIndexingParams.DEFAULT, new MatchAllDocsQuery());
    ddq.add(new CategoryPath("dim", "b"));
    dimSeen.clear();
    dsr = ds.search(null, ddq, 10, fsp);


    assertEquals(75, dsr.hits.totalHits);
    assertEquals(2, dsr.facetResults.size());
    assertEquals("dim (0)\n  b (75)\n  a (25)\n", FacetTestUtils.toSimpleString(dsr.facetResults.get(0)));
    assertEquals("field (0)\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", FacetTestUtils.toSimpleString(dsr.facetResults.get(1)));


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


    assertEquals(11, dsr.hits.totalHits);
    assertEquals(2, dsr.facetResults.size());

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


        LongRange range = (LongRange) ((RangeFacetRequest<?>) results.get(0).getFacetRequest()).ranges[rangeID];


        // Test drill-down:
        DrillDownQuery ddq = new DrillDownQuery(FacetIndexingParams.DEFAULT);
        ddq.add("field", NumericRangeQuery.newLongRange("field", range.min, range.max, range.minInclusive, range.maxInclusive));
        assertEquals(expectedCounts[rangeID], s.search(ddq, 10).totalHits);
      }
    }


    r.close();

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


        FloatRange range = (FloatRange) ((RangeFacetRequest<?>) results.get(0).getFacetRequest()).ranges[rangeID];


        // Test drill-down:
        DrillDownQuery ddq = new DrillDownQuery(FacetIndexingParams.DEFAULT);
        ddq.add("field", NumericRangeQuery.newFloatRange("field", range.min, range.max, range.minInclusive, range.maxInclusive));
        assertEquals(expectedCounts[rangeID], s.search(ddq, 10).totalHits);
      }
    }


    r.close();

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


        DoubleRange range = (DoubleRange) ((RangeFacetRequest<?>) results.get(0).getFacetRequest()).ranges[rangeID];


        // Test drill-down:
        DrillDownQuery ddq = new DrillDownQuery(FacetIndexingParams.DEFAULT);
        ddq.add("field", NumericRangeQuery.newDoubleRange("field", range.min, range.max, range.minInclusive, range.maxInclusive));
        assertEquals(expectedCounts[rangeID], s.search(ddq, 10).totalHits);
      }
    }


    r.close();

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        IndexSearcher searcher = new IndexSearcher(indexReader);
        FacetsCollector fc = FacetsCollector.create(new FacetSearchParams(new CountFacetRequest(cp, 10)), indexReader, taxoReader);
        searcher.search(new MatchAllDocsQuery(), fc);
        assertEquals(1, (int) fc.getFacetResults().get(0).getFacetResultNode().value);
        
        DrillDownQuery drillDown = new DrillDownQuery(FacetIndexingParams.DEFAULT);
        drillDown.add(cp);
        TopDocs docs = searcher.search(drillDown, 10);
        assertEquals(1, docs.totalHits);
      }
      return null;
    }

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      TaxonomyReader taxoReader, IndexSearcher searcher) throws IOException {
    // verify drill-down
    for (String dim : expectedCounts.keySet()) {
      CategoryPath drillDownCP = new CategoryPath(dim);
      FacetSearchParams fsp = new FacetSearchParams(fip, new CountFacetRequest(drillDownCP, 10));
      DrillDownQuery drillDown = new DrillDownQuery(fip, new MatchAllDocsQuery());
      drillDown.add(drillDownCP);
      TotalHitCountCollector total = new TotalHitCountCollector();
      FacetsCollector fc = FacetsCollector.create(fsp, indexReader, taxoReader);
      searcher.search(drillDown, MultiCollector.wrap(fc, total));
      assertTrue("no results for drill-down query " + drillDown, total.getTotalHits() > 0);
      List<FacetResult> facetResults = fc.getFacetResults();

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


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


    // Use FieldCacheRangeFilter; this will use
    // NumericDocValues:
    q.add("timestamp", NumericRangeQuery.newLongRange("timestamp", range.min, range.max, range.minInclusive, range.maxInclusive));


    return searcher.search(q, 10);
  }

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    // Now user drills down on Publish Date/2010:
    FacetSearchParams fsp = new FacetSearchParams(new CountFacetRequest(new CategoryPath("Author"), 10));


    // Passing no baseQuery means we drill down on all
    // documents ("browse only"):
    DrillDownQuery q = new DrillDownQuery(fsp.indexingParams);
    q.add(new CategoryPath("Publish Date/2010", '/'));
    FacetsCollector fc = FacetsCollector.create(fsp, searcher.getIndexReader(), taxoReader);
    searcher.search(q, fc);


    // Retrieve results
    List<FacetResult> facetResults = fc.getFacetResults();

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org.apache.lucene.demo.facet.RangeFacetsExample

org.apache.lucene.demo.facet.SimpleFacetsExample

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org.apache.lucene.facet.params.CategoryListParams

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org.apache.lucene.facet.sortedset.TestSortedSetDocValuesFacets

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org.apache.lucene.index.Term

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