Examples of org.apache.lucene.search.FilteredQuery

org.apache.lucene.search.FilteredQuery
A query that applies a filter to the results of another query.
Note: the bits are retrieved from the filter each time this query is used in a search - use a CachingWrapperFilter to avoid regenerating the bits every time. @since 1.4 @see CachingWrapperFilter

    if (clauses.length == other.drillDownDims.size()) {
      throw new IllegalArgumentException("cannot apply filter unless baseQuery isn't null; pass ConstantScoreQuery instead");
    }
    assert clauses.length == 1+other.drillDownDims.size(): clauses.length + " vs " + (1+other.drillDownDims.size());
    drillDownDims.putAll(other.drillDownDims);
    query.add(new FilteredQuery(clauses[0].getQuery(), filter), Occur.MUST);
    for(int i=1;i<clauses.length;i++) {
      query.add(clauses[i].getQuery(), Occur.MUST);
    }
    fip = other.fip;
  }

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    //args.setDistPrecision(0.025);
    Query query;
    if (random().nextBoolean()) {
      query = strategy.makeQuery(args);
    } else {
      query = new FilteredQuery(new MatchAllDocsQuery(),strategy.makeFilter(args));
    }
    SearchResults results = executeQuery(query, 100);
    assertEquals(""+shape,assertNumFound,results.numFound);
    if (assertIds != null) {
      Set<Integer> resultIds = new HashSet<Integer>();

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    IndexSearcher searcher = new IndexSearcher(DirectoryReader.open(w.w, false));
    w.close();
    Filter parentFilter = new QueryWrapperFilter(new TermQuery(new Term("__type", "parent")));
    Filter childFilter = new QueryWrapperFilter(new PrefixQuery(new Term("field2")));
    ToParentBlockJoinQuery query = new ToParentBlockJoinQuery(
        new FilteredQuery(new MatchAllDocsQuery(), childFilter),
        new FixedBitSetCachingWrapperFilter(parentFilter),
        ScoreMode.None
    );


    // Sort by field ascending, order first
    ToParentBlockJoinSortField sortField = new ToParentBlockJoinSortField(
        "field2", SortField.Type.STRING, false, wrap(parentFilter), wrap(childFilter)
    );
    Sort sort = new Sort(sortField);
    TopFieldDocs topDocs = searcher.search(query, 5, sort);
    assertEquals(7, topDocs.totalHits);
    assertEquals(5, topDocs.scoreDocs.length);
    assertEquals(3, topDocs.scoreDocs[0].doc);
    assertEquals("a", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[0]).fields[0]).utf8ToString());
    assertEquals(7, topDocs.scoreDocs[1].doc);
    assertEquals("c", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[1]).fields[0]).utf8ToString());
    assertEquals(11, topDocs.scoreDocs[2].doc);
    assertEquals("e", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[2]).fields[0]).utf8ToString());
    assertEquals(15, topDocs.scoreDocs[3].doc);
    assertEquals("g", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[3]).fields[0]).utf8ToString());
    assertEquals(19, topDocs.scoreDocs[4].doc);
    assertEquals("i", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[4]).fields[0]).utf8ToString());


    // Sort by field ascending, order last
    sortField = new ToParentBlockJoinSortField(
        "field2", SortField.Type.STRING, false, true, wrap(parentFilter), wrap(childFilter)
    );
    sort = new Sort(sortField);
    topDocs = searcher.search(query, 5, sort);
    assertEquals(7, topDocs.totalHits);
    assertEquals(5, topDocs.scoreDocs.length);
    assertEquals(3, topDocs.scoreDocs[0].doc);
    assertEquals("c", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[0]).fields[0]).utf8ToString());
    assertEquals(7, topDocs.scoreDocs[1].doc);
    assertEquals("e", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[1]).fields[0]).utf8ToString());
    assertEquals(11, topDocs.scoreDocs[2].doc);
    assertEquals("g", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[2]).fields[0]).utf8ToString());
    assertEquals(15, topDocs.scoreDocs[3].doc);
    assertEquals("i", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[3]).fields[0]).utf8ToString());
    assertEquals(19, topDocs.scoreDocs[4].doc);
    assertEquals("k", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[4]).fields[0]).utf8ToString());


    // Sort by field descending, order last
    sortField = new ToParentBlockJoinSortField(
        "field2", SortField.Type.STRING, true, wrap(parentFilter), wrap(childFilter)
    );
    sort = new Sort(sortField);
    topDocs = searcher.search(query, 5, sort);
    assertEquals(topDocs.totalHits, 7);
    assertEquals(5, topDocs.scoreDocs.length);
    assertEquals(28, topDocs.scoreDocs[0].doc);
    assertEquals("o", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[0]).fields[0]).utf8ToString());
    assertEquals(23, topDocs.scoreDocs[1].doc);
    assertEquals("m", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[1]).fields[0]).utf8ToString());
    assertEquals(19, topDocs.scoreDocs[2].doc);
    assertEquals("k", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[2]).fields[0]).utf8ToString());
    assertEquals(15, topDocs.scoreDocs[3].doc);
    assertEquals("i", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[3]).fields[0]).utf8ToString());
    assertEquals(11, topDocs.scoreDocs[4].doc);
    assertEquals("g", ((BytesRef) ((FieldDoc) topDocs.scoreDocs[4]).fields[0]).utf8ToString());


    // Sort by field descending, order last, sort filter (filter_1:T)
    childFilter = new QueryWrapperFilter(new TermQuery((new Term("filter_1", "T"))));
    query = new ToParentBlockJoinQuery(
        new FilteredQuery(new MatchAllDocsQuery(), childFilter),
        new FixedBitSetCachingWrapperFilter(parentFilter),
        ScoreMode.None
    );
    sortField = new ToParentBlockJoinSortField(
        "field2", SortField.Type.STRING, true, wrap(parentFilter), wrap(childFilter)

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    new FieldQuery(q, reader, true, true );
  }
  
  public void testFlattenFilteredQuery() throws Exception {
    initBoost();
    Query query = new FilteredQuery(pqF( "A" ), new Filter() {
      @Override
      public DocIdSet getDocIdSet(AtomicReaderContext context, Bits acceptDocs)
          throws IOException {
        return null;
      }
    });
    query.setBoost(boost);
    FieldQuery fq = new FieldQuery( query, true, true );
    Set<Query> flatQueries = new HashSet<Query>();
    fq.flatten( query, reader, flatQueries );
    assertCollectionQueries( flatQueries, tq( boost, "A" ) );
  }

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   * @return Lucene Query to be used in a search
   * @see org.apache.lucene.search.Query
   * @see org.hibernate.search.spatial.Coordinates
   */
  public static Query buildQuadTreeQuery(Coordinates center, double radius, String fieldName) {
    return new FilteredQuery( new MatchAllDocsQuery(), buildQuadTreeFilter( center, radius, fieldName ) );
  }

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   * @see Query
   * @see org.hibernate.search.spatial.Coordinates
   */
  public static Query buildDistanceQuery(Coordinates center, double radius, String fieldName) {
    Filter allFilter = new QueryWrapperFilter( new MatchAllDocsQuery() );
    return new FilteredQuery( new MatchAllDocsQuery(), buildDistanceFilter( allFilter, center, radius, fieldName ) );
  }

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   * @return Lucene Query to be used in a search
   * @see Query
   * @see org.hibernate.search.spatial.Coordinates
   */
  public static Query buildSpatialQueryByQuadTree(Coordinates center, double radius, String fieldName) {
    return new FilteredQuery( new MatchAllDocsQuery(),
        buildDistanceFilter(
            buildQuadTreeFilter( center, radius, fieldName ),
            center,
            radius,
            fieldName

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    BooleanQuery boxQuery = new BooleanQuery();
    boxQuery.add( latQuery, BooleanClause.Occur.MUST );
    boxQuery.add( longQuery, BooleanClause.Occur.MUST );


    return new FilteredQuery(
        new MatchAllDocsQuery(),
        buildDistanceFilter(
            new QueryWrapperFilter( boxQuery ),
            center,
            radius,

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    if ( wrappedQuery == null ) {
      throw new AssertionFailure( "wrapped query not set" );
    }
    finalQuery.setBoost( boost * finalQuery.getBoost() );
    if ( filter != null ) {
      finalQuery = new FilteredQuery(finalQuery, filter);
    }
    if ( constantScore ) {
      finalQuery = new ConstantScoreQuery( new QueryWrapperFilter( finalQuery ) );
    }
    return finalQuery;

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  private static TopDocs doSearch(IndexSearcher searcher, ScoreDoc after, Query q, Filter filter, int n, Sort sort,
                                  boolean doDocScores, boolean doMaxScore, Collector fc) throws IOException {


    if (filter != null) {
      q = new FilteredQuery(q, filter);
    }


    int limit = searcher.getIndexReader().maxDoc();
    if (limit == 0) {
      limit = 1;

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