Package org.apache.lucene.search.grouping.function

Examples of org.apache.lucene.search.grouping.function.FunctionFirstPassGroupingCollector

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    int topN = groupOffset + groupLimit;
    final AbstractFirstPassGroupingCollector firstPassCollector;
    final AbstractAllGroupsCollector allGroupsCollector;
    final AbstractAllGroupHeadsCollector allGroupHeadsCollector;
    if (groupFunction != null) {
      firstPassCollector = new FunctionFirstPassGroupingCollector(groupFunction, valueSourceContext, groupSort, topN);
      if (allGroups) {
        allGroupsCollector = new FunctionAllGroupsCollector(groupFunction, valueSourceContext);
      } else {
        allGroupsCollector = null;
      }
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  @SuppressWarnings({"unchecked","rawtypes"})
  private <T> AbstractFirstPassGroupingCollector<T> createRandomFirstPassCollector(DocValuesType dvType, Sort groupSort, String groupField, int topNGroups) throws IOException {
    Random random = random();
    if (dvType != null) {
      if (random.nextBoolean()) {
        return (AbstractFirstPassGroupingCollector<T>) new FunctionFirstPassGroupingCollector(new BytesRefFieldSource(groupField), new HashMap<>(), groupSort, topNGroups);
      } else {
        return (AbstractFirstPassGroupingCollector<T>) new TermFirstPassGroupingCollector(groupField, groupSort, topNGroups);
      }
    } else {
      if (random.nextBoolean()) {
        return (AbstractFirstPassGroupingCollector<T>) new FunctionFirstPassGroupingCollector(new BytesRefFieldSource(groupField), new HashMap<>(), groupSort, topNGroups);
      } else {
        return (AbstractFirstPassGroupingCollector<T>) new TermFirstPassGroupingCollector(groupField, groupSort, topNGroups);
      }
    }
  }
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  private AbstractFirstPassGroupingCollector<?> createRandomFirstPassCollector(String groupField, Sort groupSort, int topDocs) throws IOException {
    AbstractFirstPassGroupingCollector<?> selected;
    if (random().nextBoolean()) {
      ValueSource vs = new BytesRefFieldSource(groupField);
      selected = new FunctionFirstPassGroupingCollector(vs, new HashMap<>(), groupSort, topDocs);
    } else {
      selected = new TermFirstPassGroupingCollector(groupField, groupSort, topDocs);
    }
    if (VERBOSE) {
      System.out.println("Selected implementation: " + selected.getClass().getName());
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  }

  private AbstractFirstPassGroupingCollector<?> createFirstPassCollector(String groupField, Sort groupSort, int topDocs, AbstractFirstPassGroupingCollector<?> firstPassGroupingCollector) throws IOException {
    if (TermFirstPassGroupingCollector.class.isAssignableFrom(firstPassGroupingCollector.getClass())) {
      ValueSource vs = new BytesRefFieldSource(groupField);
      return new FunctionFirstPassGroupingCollector(vs, new HashMap<>(), groupSort, topDocs);
    } else {
      return new TermFirstPassGroupingCollector(groupField, groupSort, topDocs);
    }
  }
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Related Classes of org.apache.lucene.search.grouping.function.FunctionFirstPassGroupingCollector

  • org.apache.lucene.queries.function.FunctionValues
  • org.apache.lucene.search.grouping.DistinctValuesCollectorTest
  • org.apache.lucene.search.grouping.GroupingSearch
  • org.apache.lucene.search.grouping.TestGrouping
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