Examples with FacetsCollector org.apache.lucene.facet.FacetsCollector used on opensource projects

Example 1 with FacetsCollector

use of org.apache.lucene.facet.FacetsCollector in project orientdb by orientechnologies.

the class LuceneNativeFacet method facetsWithSearch.

/**
   * User runs a query and counts facets.
   */
private List<FacetResult> facetsWithSearch() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);
    FacetsCollector fc = new FacetsCollector();
    // MatchAllDocsQuery is for "browsing" (counts facets
    // for all non-deleted docs in the index); normally
    // you'd use a "normal" query:
    FacetsCollector.search(searcher, new MatchAllDocsQuery(), 10, fc);
    // Retrieve results
    List<FacetResult> results = new ArrayList<FacetResult>();
    // Count both "Publish Date" and "Author" dimensions
    Facets facets = new FastTaxonomyFacetCounts(taxoReader, config, fc);
    results.add(facets.getTopChildren(10, "Author"));
    results.add(facets.getTopChildren(10, "Publish Date"));
    indexReader.close();
    taxoReader.close();
    return results;
}

Example 2 with FacetsCollector

use of org.apache.lucene.facet.FacetsCollector in project orientdb by orientechnologies.

the class LuceneNativeFacet method facetsOnly.

/**
   * User runs a query and counts facets only without collecting the matching documents.
   */
private List<FacetResult> facetsOnly() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);
    FacetsCollector fc = new FacetsCollector();
    // MatchAllDocsQuery is for "browsing" (counts facets
    // for all non-deleted docs in the index); normally
    // you'd use a "normal" query:
    searcher.search(new MatchAllDocsQuery(), null, /* Filter */
    fc);
    // Retrieve results
    List<FacetResult> results = new ArrayList<FacetResult>();
    // Count both "Publish Date" and "Author" dimensions
    Facets facets = new FastTaxonomyFacetCounts(taxoReader, config, fc);
    results.add(facets.getTopChildren(10, "Author"));
    results.add(facets.getTopChildren(10, "Publish Date"));
    indexReader.close();
    taxoReader.close();
    return results;
}

Example 3 with FacetsCollector

use of org.apache.lucene.facet.FacetsCollector in project orientdb by orientechnologies.

the class LuceneNativeFacet method drillDown.

/**
   * User drills down on 'Publish Date/2010', and we return facets for 'Author'
   */
private FacetResult drillDown() throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);
    // Passing no baseQuery means we drill down on all
    // documents ("browse only"):
    DrillDownQuery q = new DrillDownQuery(config);
    // Now user drills down on Publish Date/2010:
    q.add("Publish Date", "2010");
    FacetsCollector fc = new FacetsCollector();
    FacetsCollector.search(searcher, q, 10, fc);
    // Retrieve results
    Facets facets = new FastTaxonomyFacetCounts(taxoReader, config, fc);
    FacetResult result = facets.getTopChildren(10, "Author");
    indexReader.close();
    taxoReader.close();
    return result;
}

Example 4 with FacetsCollector

use of org.apache.lucene.facet.FacetsCollector in project jackrabbit-oak by apache.

the class FacetHelper method getFacets.

public static Facets getFacets(IndexSearcher searcher, Query query, TopDocs docs, QueryIndex.IndexPlan plan, boolean secure) throws IOException {
    Facets facets = null;
    @SuppressWarnings("unchecked") List<String> facetFields = (List<String>) plan.getAttribute(ATTR_FACET_FIELDS);
    if (facetFields != null && facetFields.size() > 0) {
        Map<String, Facets> facetsMap = new HashMap<String, Facets>();
        for (String facetField : facetFields) {
            FacetsCollector facetsCollector = new FacetsCollector();
            try {
                DefaultSortedSetDocValuesReaderState state = new DefaultSortedSetDocValuesReaderState(searcher.getIndexReader(), FieldNames.createFacetFieldName(facetField));
                FacetsCollector.search(searcher, query, 10, facetsCollector);
                facetsMap.put(facetField, secure ? new FilteredSortedSetDocValuesFacetCounts(state, facetsCollector, plan.getFilter(), docs) : new SortedSetDocValuesFacetCounts(state, facetsCollector));
            } catch (IllegalArgumentException iae) {
                LOGGER.warn("facets for {} not yet indexed", facetField);
            }
        }
        if (facetsMap.size() > 0) {
            facets = new MultiFacets(facetsMap);
        }
    }
    return facets;
}

Example 5 with FacetsCollector

use of org.apache.lucene.facet.FacetsCollector in project lucene-solr by apache.

the class TestOrdinalMappingLeafReader method verifyResults.

private void verifyResults(Directory indexDir, Directory taxoDir) throws IOException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    DirectoryTaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);
    IndexSearcher searcher = newSearcher(indexReader);
    FacetsCollector collector = new FacetsCollector();
    FacetsCollector.search(searcher, new MatchAllDocsQuery(), 10, collector);
    // tag facets
    Facets tagFacets = new FastTaxonomyFacetCounts("$tags", taxoReader, facetConfig, collector);
    FacetResult result = tagFacets.getTopChildren(10, "tag");
    for (LabelAndValue lv : result.labelValues) {
        if (VERBOSE) {
            System.out.println(lv);
        }
        assertEquals(NUM_DOCS, lv.value.intValue());
    }
    // id facets
    Facets idFacets = new FastTaxonomyFacetCounts(taxoReader, facetConfig, collector);
    FacetResult idResult = idFacets.getTopChildren(10, "id");
    assertEquals(NUM_DOCS, idResult.childCount);
    // each "id" appears twice
    assertEquals(NUM_DOCS * 2, idResult.value);
    BinaryDocValues bdv = MultiDocValues.getBinaryValues(indexReader, "bdv");
    BinaryDocValues cbdv = MultiDocValues.getBinaryValues(indexReader, "cbdv");
    for (int i = 0; i < indexReader.maxDoc(); i++) {
        assertEquals(i, bdv.nextDoc());
        assertEquals(i, cbdv.nextDoc());
        assertEquals(Integer.parseInt(cbdv.binaryValue().utf8ToString()), Integer.parseInt(bdv.binaryValue().utf8ToString()) * 2);
    }
    IOUtils.close(indexReader, taxoReader);
}