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

org.apache.lucene.facet.search.FacetsCollector
A {@link Collector} which executes faceted search and computes the weight ofrequested facets. To get the facet results you should call {@link #getFacetResults()}. {@link #create(FacetSearchParams,IndexReader,TaxonomyReader)} returns themost optimized {@link FacetsCollector} for the given parameters. @lucene.experimental

    ArrayList<FacetRequest> requests = new ArrayList<FacetRequest>(expectedCounts.size());
    for (String dim : expectedCounts.keySet()) {
      requests.add(new CountFacetRequest(new CategoryPath(dim), 5));
    }
    FacetSearchParams fsp = new FacetSearchParams(fip, requests);
    FacetsCollector fc = FacetsCollector.create(fsp, indexReader, taxoReader);
    MatchAllDocsQuery base = new MatchAllDocsQuery();
    searcher.search(base, fc);
    List<FacetResult> facetResults = fc.getFacetResults();
    assertEquals(requests.size(), facetResults.size());
    for (FacetResult res : facetResults) {
      FacetResultNode node = res.getFacetResultNode();
      String dim = node.label.components[0];
      assertEquals("wrong count for " + dim, expectedCounts.get(dim).intValue(), (int) node.value);

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      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();
      assertEquals(1, facetResults.size());
      FacetResultNode rootNode = facetResults.get(0).getFacetResultNode();
      assertEquals("wrong count for " + dim, expectedCounts.get(dim).intValue(), (int) rootNode.value);
    }
  }

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      @Override
      public FacetsAggregator getAggregator() {
        return new MultiAssociationsFacetsAggregator(aggregators);
      }
    };
    FacetsCollector fc = FacetsCollector.create(fa);
    
    // MatchAllDocsQuery is for "browsing" (counts facets
    // for all non-deleted docs in the index); normally
    // you'd use a "normal" query, and use MultiCollector to
    // wrap collecting the "normal" hits and also facets:
    searcher.search(new MatchAllDocsQuery(), fc);
    
    // Retrieve results
    List<FacetResult> facetResults = fc.getFacetResults();
    
    indexReader.close();
    taxoReader.close();
    
    return facetResults;

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    FacetSearchParams fsp = new FacetSearchParams(
        new CountFacetRequest(new CategoryPath("Publish Date"), 10), 
        new CountFacetRequest(new CategoryPath("Author"), 10));


    // Aggregatses the facet counts
    FacetsCollector fc = FacetsCollector.create(fsp, searcher.getIndexReader(), taxoReader);


    // MatchAllDocsQuery is for "browsing" (counts facets
    // for all non-deleted docs in the index); normally
    // you'd use a "normal" query, and use MultiCollector to
    // wrap collecting the "normal" hits and also facets:
    searcher.search(new MatchAllDocsQuery(), fc);


    // Retrieve results
    List<FacetResult> facetResults = fc.getFacetResults();
    
    indexReader.close();
    taxoReader.close();
    
    return facetResults;

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    // Now user drills down on Publish Date/2010:
    FacetSearchParams fsp = new FacetSearchParams(new CountFacetRequest(new CategoryPath("Author"), 10));
    DrillDownQuery q = new DrillDownQuery(fsp.indexingParams, new MatchAllDocsQuery());
    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();
    
    indexReader.close();
    taxoReader.close();
    
    return facetResults;

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    FacetSearchParams fsp = new FacetSearchParams(indexingParams,
        new CountFacetRequest(new CategoryPath("Publish Date"), 10), 
        new CountFacetRequest(new CategoryPath("Author"), 10));


    // Aggregatses the facet counts
    FacetsCollector fc = FacetsCollector.create(fsp, searcher.getIndexReader(), taxoReader);


    // MatchAllDocsQuery is for "browsing" (counts facets
    // for all non-deleted docs in the index); normally
    // you'd use a "normal" query, and use MultiCollector to
    // wrap collecting the "normal" hits and also facets:
    searcher.search(new MatchAllDocsQuery(), fc);


    // Retrieve results
    List<FacetResult> facetResults = fc.getFacetResults();
    
    indexReader.close();
    taxoReader.close();
    
    return facetResults;

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    // Add the facet requests of interest to the search params
    for (FacetRequest frq : facetRequests) {
      facetSearchParams.addFacetRequest(frq);
    }


    FacetsCollector facetsCollector = new FacetsCollector(facetSearchParams, indexReader, taxoReader);


    // perform documents search and facets accumulation
    searcher.search(q, MultiCollector.wrap(topDocsCollector, facetsCollector));


    // Obtain facets results and print them
    List<FacetResult> res = facetsCollector.getFacetResults();


    int i = 0;
    for (FacetResult facetResult : res) {
      ExampleUtils.log("Res " + (i++) + ": " + facetResult);
    }

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    // application,
    // although it is insufficient for tight control on faceted search
    // behavior - in those
    // situations other, more low-level interfaces are available, as
    // demonstrated in other search examples.
    FacetsCollector facetsCollector = new FacetsCollector(
        facetSearchParams, indexReader, taxo);


    // perform documents search and facets accumulation
    searcher.search(q, MultiCollector.wrap(topDocsCollector, facetsCollector));


    // Obtain facets results and print them
    List<FacetResult> res = facetsCollector.getFacetResults();


    int i = 0;
    for (FacetResult facetResult : res) {
      ExampleUtils.log("Res " + (i++) + ": " + facetResult);
    }

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        new LongRange("less than or equal to 10", 0L, true, 10L, true),
        new LongRange("over 90", 90L, false, 100L, false),
        new LongRange("90 or above", 90L, true, 100L, false),
        new LongRange("over 1000", 1000L, false, Long.MAX_VALUE, false)));
    
    FacetsCollector fc = FacetsCollector.create(a);


    IndexSearcher s = newSearcher(r);
    s.search(new MatchAllDocsQuery(), fc);
    List<FacetResult> result = fc.getFacetResults();
    assertEquals(1, result.size());
    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(result.get(0)));
    
    r.close();
    d.close();

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        new DoubleRange("less than or equal to 10", 0.0, true, 10.0, true),
        new DoubleRange("over 90", 90.0, false, 100.0, false),
        new DoubleRange("90 or above", 90.0, true, 100.0, false),
        new DoubleRange("over 1000", 1000.0, false, Double.POSITIVE_INFINITY, false)));
    
    FacetsCollector fc = FacetsCollector.create(a);


    IndexSearcher s = newSearcher(r);
    s.search(new MatchAllDocsQuery(), fc);
    List<FacetResult> result = fc.getFacetResults();
    assertEquals(1, result.size());
    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(result.get(0)));
    
    r.close();
    d.close();

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com.gentics.cr.lucene.search.CRSearcher

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org.apache.lucene.demo.facet.MultiCategoryListsFacetsExample

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org.apache.lucene.facet.associations.AssociationsFacetRequestTest

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