Package org.apache.lucene.facet.search.params

Examples of org.apache.lucene.facet.search.params.FacetSearchParams

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    TopScoreDocCollector topDocsCollector = TopScoreDocCollector.create(10,
        true);

    // Faceted search parameters indicate which facets are we interested in
    FacetSearchParams facetSearchParams = new FacetSearchParams(iParams);
    facetSearchParams.addFacetRequest(new CountFacetRequest(
        new CategoryPath("5"), 10));
    facetSearchParams.addFacetRequest(new CountFacetRequest(
        new CategoryPath("5", "5"), 10));
    facetSearchParams.addFacetRequest(new CountFacetRequest(
        new CategoryPath("6", "2"), 10));

    // Facets collector is the simplest interface for faceted search.
    // It provides faceted search functions that are sufficient to many
    // application,
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      int k, String... facetNames) throws IOException,
      IllegalAccessException, InstantiationException {
   
    Collector[] collectors = new Collector[2];
   
    FacetSearchParams facetSearchParams = new FacetSearchParams(iParams);
    Collection<FacetRequest> fRequests = new ArrayList<FacetRequest>();
    for (String facetName : facetNames) {
      CategoryPath cp = new CategoryPath(facetName);
      FacetRequest fq = new CountFacetRequest(cp, k);
      facetSearchParams.addFacetRequest(fq);
      fRequests.add(fq);
    }

    TopScoreDocCollector topDocsCollector = TopScoreDocCollector.create(
        searcher.getIndexReader().maxDoc(), true);
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  private void verifyResults(Directory dir, Directory taxDir) throws IOException {
    IndexReader reader1 = IndexReader.open(dir);
    DirectoryTaxonomyReader taxReader = new DirectoryTaxonomyReader(taxDir);
    IndexSearcher searcher = newSearcher(reader1);
    FacetSearchParams fsp = new FacetSearchParams();
    fsp.addFacetRequest(new CountFacetRequest(new CategoryPath("tag"), NUM_DOCS));
    FacetsCollector collector = new FacetsCollector(fsp, reader1, taxReader);
    searcher.search(new MatchAllDocsQuery(), collector);
    FacetResult result = collector.getFacetResults().get(0);
    FacetResultNode node = result.getFacetResultNode();
    for (FacetResultNode facet: node.getSubResults()) {
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public class TestTopKResultsHandlerRandom extends BaseTestTopK {
 
  private List<FacetResult> countFacets(int partitionSize, int numResults, final boolean doComplement)
      throws IOException, IllegalAccessException, InstantiationException {
    Query q = new MatchAllDocsQuery();
    FacetSearchParams facetSearchParams = searchParamsWithRequests(numResults, partitionSize);
    FacetsCollector fc = new FacetsCollector(facetSearchParams, indexReader, taxoReader) {
      @Override
      protected FacetsAccumulator initFacetsAccumulator(
          FacetSearchParams facetSearchParams, IndexReader indexReader,
          TaxonomyReader taxonomyReader) {
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  protected FacetSearchParams searchParamsWithRequests(int numResults) {
    return searchParamsWithRequests(numResults, Integer.MAX_VALUE);
  }
 
  protected FacetSearchParams searchParamsWithRequests(int numResults, int partitionSize) {
    FacetSearchParams res = getFacetedSearchParams(partitionSize);
    res.addFacetRequest(new CountFacetRequest(new CategoryPath("a"), numResults));
    res.addFacetRequest(new CountFacetRequest(new CategoryPath("a", "1"), numResults));
    res.addFacetRequest(new CountFacetRequest(new CategoryPath("a", "1", "10"), numResults));
    res.addFacetRequest(new CountFacetRequest(new CategoryPath("a", "2",  "26", "267"), numResults));
    return res;
  }
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    }
   
    taxonomyWriter.close();
    iw.close();
   
    FacetSearchParams sParams = new FacetSearchParams();
    sParams.addFacetRequest(new ScoreFacetRequest(new CategoryPath("a"), 10));
   
    IndexReader r = IndexReader.open(indexDir);
    DirectoryTaxonomyReader taxo = new DirectoryTaxonomyReader(taxoDir);
   
    FacetsCollector fc = new FacetsCollector(sParams, r, taxo);
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    index100Docs(indexDir, taxoDir);
   
    IndexReader r = IndexReader.open(indexDir);
    TaxonomyReader tr = new DirectoryTaxonomyReader(taxoDir);
   
    FacetSearchParams fsp = new FacetSearchParams();
   
    CountFacetRequest facetRequest = new CountFacetRequest(new CategoryPath("root"), 10);
   
    // Setting the depth to '2', should potentially get all categories
    facetRequest.setDepth(2);
    facetRequest.setResultMode(ResultMode.PER_NODE_IN_TREE);
    fsp.addFacetRequest(facetRequest);
   
    // Craft sampling params to enforce sampling
    final SamplingParams params = new SamplingParams();
    params.setMinSampleSize(2);
    params.setMaxSampleSize(50);
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  /**
   * Over-sampled search params, wrapping each request with an over-sampled one.
   */
  public FacetSearchParams overSampledSearchParams(FacetSearchParams original) {
    FacetSearchParams res = original;
    // So now we can sample -> altering the searchParams to accommodate for the statistical error for the sampling
    double overSampleFactor = getSamplingParams().getOversampleFactor();
    if (overSampleFactor > 1) { // any factoring to do?
      res = new FacetSearchParams(original.getFacetIndexingParams());
      for (FacetRequest frq: original.getFacetRequests()) {
        int overSampledNumResults = (int) Math.ceil(frq.getNumResults() * overSampleFactor);
        res.addFacetRequest(new OverSampledFacetRequest(frq, overSampledNumResults));
      }
    }
    return res;
  }
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    // docids collector for guiding facets accumulation (scoring disabled)
    ScoredDocIdCollector docIdsCollecor = ScoredDocIdCollector.create(indexReader.maxDoc(), false);
   
    // Faceted search parameters indicate which facets are we interested in
    FacetSearchParams facetSearchParams = new FacetSearchParams();
    facetSearchParams.addFacetRequest(new CountFacetRequest(new CategoryPath("root","a"), 10));
   
    // search, into both collectors. note: in case only facets accumulation
    // is required, the topDocCollector part can be totally discarded
    searcher.search(q, MultiCollector.wrap(topDocsCollector, docIdsCollecor));
       
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    if (indexingParams == null) {
      indexingParams = new DefaultFacetIndexingParams();
    }
   
    // Faceted search parameters indicate which facets are we interested in
    FacetSearchParams facetSearchParams = new FacetSearchParams(indexingParams);
   
    // 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
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Related Classes of org.apache.lucene.facet.search.params.FacetSearchParams

  • com.gentics.cr.lucene.facets.search.FacetsSearch
  • org.apache.lucene.facet.example.adaptive.AdaptiveSearcher
  • org.apache.lucene.facet.example.multiCL.MultiCLSearcher
  • org.apache.lucene.facet.example.simple.SimpleSearcher
  • org.apache.lucene.facet.FacetTestBase
  • org.apache.lucene.facet.FacetTestUtils
  • org.apache.lucene.facet.index.FacetsPayloadProcessorProviderTest
  • org.apache.lucene.facet.index.params.DefaultFacetIndexingParams
  • org.apache.lucene.facet.search.association.AssociationsFacetRequestTest
  • org.apache.lucene.facet.search.BaseTestTopK
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