Examples with DirectoryTaxonomyReader org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader used on opensource projects

Example 66 with DirectoryTaxonomyReader

use of org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader in project lucene-solr by apache.

the class SearcherTaxonomyManager method refreshIfNeeded.

@Override
protected SearcherAndTaxonomy refreshIfNeeded(SearcherAndTaxonomy ref) throws IOException {
    // Must re-open searcher first, otherwise we may get a
    // new reader that references ords not yet known to the
    // taxonomy reader:
    final IndexReader r = ref.searcher.getIndexReader();
    final IndexReader newReader = DirectoryReader.openIfChanged((DirectoryReader) r);
    if (newReader == null) {
        return null;
    } else {
        DirectoryTaxonomyReader tr = TaxonomyReader.openIfChanged(ref.taxonomyReader);
        if (tr == null) {
            ref.taxonomyReader.incRef();
            tr = ref.taxonomyReader;
        } else if (taxoWriter != null && taxoWriter.getTaxonomyEpoch() != taxoEpoch) {
            IOUtils.close(newReader, tr);
            throw new IllegalStateException("DirectoryTaxonomyWriter.replaceTaxonomy was called, which is not allowed when using SearcherTaxonomyManager");
        }
        return new SearcherAndTaxonomy(SearcherManager.getSearcher(searcherFactory, newReader, r), tr);
    }
}

Example 67 with DirectoryTaxonomyReader

use of org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader in project lucene-solr by apache.

the class TestDrillSideways method testEmptyIndex.

public void testEmptyIndex() throws Exception {
    // LUCENE-5045: make sure DrillSideways works with an empty index
    Directory dir = newDirectory();
    Directory taxoDir = newDirectory();
    RandomIndexWriter writer = new RandomIndexWriter(random(), dir);
    DirectoryTaxonomyWriter taxoWriter = new DirectoryTaxonomyWriter(taxoDir, IndexWriterConfig.OpenMode.CREATE);
    IndexSearcher searcher = newSearcher(writer.getReader());
    TaxonomyReader taxoReader = new DirectoryTaxonomyReader(taxoWriter);
    // Count "Author"
    FacetsConfig config = new FacetsConfig();
    DrillSideways ds = getNewDrillSideways(searcher, config, taxoReader);
    DrillDownQuery ddq = new DrillDownQuery(config);
    ddq.add("Author", "Lisa");
    // this used to fail on IllegalArgEx
    DrillSidewaysResult r = ds.search(ddq, 10);
    assertEquals(0, r.hits.totalHits);
    r = ds.search(ddq, null, null, 10, new Sort(new SortField("foo", SortField.Type.INT)), false, // this used to fail on IllegalArgEx
    false);
    assertEquals(0, r.hits.totalHits);
    writer.close();
    IOUtils.close(taxoWriter, searcher.getIndexReader(), taxoReader, dir, taxoDir);
}

Example 68 with DirectoryTaxonomyReader

use of org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader in project lucene-solr by apache.

the class SimpleFacetsExample 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<>();
    // 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 69 with DirectoryTaxonomyReader

use of org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader in project lucene-solr by apache.

the class MultiCategoryListsFacetsExample method search.

/** User runs a query and counts facets. */
private List<FacetResult> search() 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<>();
    // Count both "Publish Date" and "Author" dimensions
    Facets author = new FastTaxonomyFacetCounts("author", taxoReader, config, fc);
    results.add(author.getTopChildren(10, "Author"));
    Facets pubDate = new FastTaxonomyFacetCounts("pubdate", taxoReader, config, fc);
    results.add(pubDate.getTopChildren(10, "Publish Date"));
    indexReader.close();
    taxoReader.close();
    return results;
}

Example 70 with DirectoryTaxonomyReader

use of org.apache.lucene.facet.taxonomy.directory.DirectoryTaxonomyReader in project lucene-solr by apache.

the class SimpleFacetsExample 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(), fc);
    // Retrieve results
    List<FacetResult> results = new ArrayList<>();
    // 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;
}