Examples of org.apache.lucene.search.FilteredQuery$QueryFirstFilterStrategy

org.apache.lucene.search.FilteredQuery
A filter strategy that advances the {@link Scorer} first and consults the{@link DocIdSet} for each matched document.
Note: this strategy requires a {@link DocIdSet#bits()} to return a non-null value. Otherwisethis strategy falls back to {@link FilteredQuery#LEAP_FROG_QUERY_FIRST_STRATEGY}

Use this strategy if the filter computation is more expensive than document scoring or if the filter has a linear running time to compute the next matching doc like exact geo distances.

    SpanQuery clauses[]={
        new SpanTermQuery(new Term("contents","john")),
        new SpanTermQuery(new Term("contents","kennedy")),
        }; 
    SpanNearQuery snq=new SpanNearQuery(clauses,1,true);
    FilteredQuery fq=new FilteredQuery(snq,rf);
    
    doSearching(fq);
    doStandardHighlights();
    //Currently highlights "John" and "Kennedy" separately
    assertTrue("Failed to find correct number of highlights " + numHighlights + " found", numHighlights == 2);

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  {
    RangeFilter rf=new RangeFilter("contents","john","john",true,true);
    PhraseQuery pq=new PhraseQuery();
    pq.add(new Term("contents","john"));
    pq.add(new  Term("contents","kennedy"));
    FilteredQuery fq=new FilteredQuery(pq,rf);
    
    doSearching(fq);
    doStandardHighlights();
    //Currently highlights "John" and "Kennedy" separately
    assertTrue("Failed to find correct number of highlights " + numHighlights + " found", numHighlights == 2);

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    SpanQuery clauses[]={
        new SpanTermQuery(new Term("contents","john")),
        new SpanTermQuery(new Term("contents","kennedy")),
        }; 
    SpanNearQuery snq=new SpanNearQuery(clauses,1,true);
    FilteredQuery fq=new FilteredQuery(snq,rf);
    
    doSearching(fq);
    doStandardHighlights();
    //Currently highlights "John" and "Kennedy" separately
    assertTrue("Failed to find correct number of highlights " + numHighlights + " found", numHighlights == 2);

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  {
    RangeFilter rf=new RangeFilter("contents","john","john",true,true);
    PhraseQuery pq=new PhraseQuery();
    pq.add(new Term("contents","john"));
    pq.add(new  Term("contents","kennedy"));
    FilteredQuery fq=new FilteredQuery(pq,rf);
    
    doSearching(fq);
    doStandardHighlights();
    //Currently highlights "John" and "Kennedy" separately
    assertTrue("Failed to find correct number of highlights " + numHighlights + " found", numHighlights == 2);

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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 buildGridQuery(Point center, double radius, String fieldName) {
    return new FilteredQuery( new MatchAllDocsQuery(  ), buildGridFilter( center, radius, fieldName ) );
  }

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   * @see Query
   * @see org.hibernate.search.spatial.Coordinates
   */
  public static Query buildDistanceQuery(Point 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 buildSpatialQueryByGrid(Point center, double radius, String fieldName) {
    return new FilteredQuery( new MatchAllDocsQuery(  ),
        buildDistanceFilter(
            buildGridFilter( 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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   * @return Lucene Query to be used in a search
   * @see org.apache.lucene.search.Query
   * @see org.hibernate.search.spatial.Coordinates
   */
  public static Query buildSpatialHashQuery(Coordinates center, double radius, String fieldName) {
    return new FilteredQuery( new MatchAllDocsQuery(), buildSpatialHashFilter( 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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