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

Example 56 with FacetsCollector

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

the class AssociationsFacetsExample method sumAssociations.

/** User runs a query and aggregates facets by summing their association values. */
private List<FacetResult> sumAssociations() 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);
    Facets tags = new TaxonomyFacetSumIntAssociations("$tags", taxoReader, config, fc);
    Facets genre = new TaxonomyFacetSumFloatAssociations("$genre", taxoReader, config, fc);
    // Retrieve results
    List<FacetResult> results = new ArrayList<>();
    results.add(tags.getTopChildren(10, "tags"));
    results.add(genre.getTopChildren(10, "genre"));
    indexReader.close();
    taxoReader.close();
    return results;
}

Example 57 with FacetsCollector

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

the class AssociationsFacetsExample method drillDown.

/** User drills down on 'tags/solr'. */
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("tags", "solr");
    FacetsCollector fc = new FacetsCollector();
    FacetsCollector.search(searcher, q, 10, fc);
    // Retrieve results
    Facets facets = new TaxonomyFacetSumFloatAssociations("$genre", taxoReader, config, fc);
    FacetResult result = facets.getTopChildren(10, "genre");
    indexReader.close();
    taxoReader.close();
    return result;
}

Example 58 with FacetsCollector

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

the class DistanceFacetsExample method drillDown.

/** User drills down on the specified range. */
public TopDocs drillDown(DoubleRange range) throws IOException {
    // Passing no baseQuery means we drill down on all
    // documents ("browse only"):
    DrillDownQuery q = new DrillDownQuery(null);
    final DoubleValuesSource vs = getDistanceValueSource();
    q.add("field", range.getQuery(getBoundingBoxQuery(ORIGIN_LATITUDE, ORIGIN_LONGITUDE, range.max), vs));
    DrillSideways ds = new DrillSideways(searcher, config, (TaxonomyReader) null) {

        @Override
        protected Facets buildFacetsResult(FacetsCollector drillDowns, FacetsCollector[] drillSideways, String[] drillSidewaysDims) throws IOException {
            assert drillSideways.length == 1;
            return new DoubleRangeFacetCounts("field", vs, drillSideways[0], ONE_KM, TWO_KM, FIVE_KM, TEN_KM);
        }
    };
    return ds.search(q, 10).hits;
}

Example 59 with FacetsCollector

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

the class ExpressionAggregationFacetsExample method search.

/** User runs a query and aggregates facets. */
private FacetResult search() throws IOException, ParseException {
    DirectoryReader indexReader = DirectoryReader.open(indexDir);
    IndexSearcher searcher = new IndexSearcher(indexReader);
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoDir);
    // Aggregate categories by an expression that combines the document's score
    // and its popularity field
    Expression expr = JavascriptCompiler.compile("_score * sqrt(popularity)");
    SimpleBindings bindings = new SimpleBindings();
    // the score of the document
    bindings.add(new SortField("_score", SortField.Type.SCORE));
    // the value of the 'popularity' field
    bindings.add(new SortField("popularity", SortField.Type.LONG));
    // Aggregates the facet values
    FacetsCollector fc = new FacetsCollector(true);
    // 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
    Facets facets = new TaxonomyFacetSumValueSource(taxoReader, config, fc, expr.getDoubleValuesSource(bindings));
    FacetResult result = facets.getTopChildren(10, "A");
    indexReader.close();
    taxoReader.close();
    return result;
}

Example 60 with FacetsCollector

use of org.apache.lucene.facet.FacetsCollector in project searchcode-server by boyter.

the class CodeSearcher method getLanguageFacetResults.

/**
     * Returns the matching language facets for a given query
     */
private List<CodeFacetLanguage> getLanguageFacetResults(IndexSearcher searcher, IndexReader reader, Query query) {
    List<CodeFacetLanguage> codeFacetLanguages = new ArrayList<>();
    try {
        SortedSetDocValuesReaderState state = new DefaultSortedSetDocValuesReaderState(reader, Values.LANGUAGENAME);
        FacetsCollector fc = new FacetsCollector();
        FacetsCollector.search(searcher, query, 10, fc);
        Facets facets = new SortedSetDocValuesFacetCounts(state, fc);
        FacetResult result = facets.getTopChildren(200, Values.LANGUAGENAME);
        if (result != null) {
            int stepThru = result.childCount > 200 ? 200 : result.childCount;
            for (int i = 0; i < stepThru; i++) {
                LabelAndValue lv = result.labelValues[i];
                if (lv != null && lv.value != null) {
                    codeFacetLanguages.add(new CodeFacetLanguage(lv.label, lv.value.intValue()));
                }
            }
        }
    } catch (IOException ex) {
    } catch (Exception ex) {
    }
    return codeFacetLanguages;
}