Examples of org.apache.lucene.facet.search.aggregator.Aggregator

Package org.apache.lucene.facet.search.aggregator

Examples of org.apache.lucene.facet.search.aggregator.Aggregator

org.apache.lucene.facet.search.aggregator.Aggregator
An Aggregator is the analogue of Lucene's Collector (see {@link org.apache.lucene.search.Collector}), for processing the categories belonging to a certain document. The Aggregator is responsible for doing whatever it wishes with the categories it is fed, e.g., counting the number of times that each category appears, or performing some computation on their association values.
Much of the function of an Aggregator implementation is not described by this interface. This includes the constructor and getter methods to retrieve the results of the aggregation. @lucene.experimental

    FacetsAccumulator fe = new StandardFacetsAccumulator(newSearchParams, indexReader, taxonomy) {
      @Override
      protected HashMap<CategoryListIterator, Aggregator> getCategoryListMap(
          FacetArrays facetArrays, int partition) throws IOException {
        
        Aggregator aggregator = new CountingAggregator(counts[partition]);
        HashMap<CategoryListIterator, Aggregator> map = new HashMap<CategoryListIterator, Aggregator>();
        for (CategoryListParams clp: facetIndexingParams.getAllCategoryListParams()) {
          final CategoryListIterator cli = clIteraor(clCache, clp, indexReader, partition);
          map.put(cli, aggregator);
        }

View Full Code Here

      CategoryListIterator categoryList = entry.getKey();
      if (!categoryList.init()) {
        continue;
      }


      Aggregator categorator = entry.getValue();
      ScoredDocIDsIterator iterator = docids.iterator();
      while (iterator.next()) {
        int docID = iterator.getDocID();
        if (!categoryList.skipTo(docID)) {
          continue;
        }
        categorator.setNextDoc(docID, iterator.getScore());
        long ordinal;
        while ((ordinal = categoryList.nextCategory()) <= Integer.MAX_VALUE) {
          categorator.aggregate((int) ordinal);
        }
      }
    }
  }

View Full Code Here

      int partition) throws IOException {
    
    HashMap<CategoryListIterator, Aggregator> categoryLists = new HashMap<CategoryListIterator, Aggregator>();


    for (FacetRequest facetRequest : searchParams.getFacetRequests()) {
      Aggregator categoryAggregator = facetRequest.createAggregator(
          isUsingComplements, facetArrays, indexReader,  taxonomyReader);


      CategoryListIterator cli = 
        facetRequest.createCategoryListIterator(indexReader, taxonomyReader, searchParams, partition);
      
      // get the aggregator
      Aggregator old = categoryLists.put(cli, categoryAggregator);


      if (old != null && !old.equals(categoryAggregator)) {
        // TODO (Facet): create a more meaningful RE class, and throw it.
        throw new RuntimeException(
        "Overriding existing category list with different aggregator. THAT'S A NO NO!");
      }
      // if the aggregator is the same we're covered

View Full Code Here

TOP

Related Classes of org.apache.lucene.facet.search.aggregator.Aggregator

org.apache.lucene.facet.search.StandardFacetsAccumulator

org.apache.lucene.facet.search.TotalFacetCounts

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.