Examples of org.apache.lucene.search.FilterClause

org.apache.lucene.search.FilterClause
A Filter that wrapped with an indication of how that filter is used when composed with another filter. (Follows the boolean logic in BooleanClause for composition of queries.) @author BPDThebault

    assertEquals("MUST_NOT",4,bits.cardinality());
  }
  public void testMustAndMustNot() throws Throwable
  {
    BooleanFilter booleanFilter = new BooleanFilter();
    booleanFilter.add(new FilterClause(getTermsFilter("inStock","N"),BooleanClause.Occur.MUST));
    booleanFilter.add(new FilterClause(getTermsFilter("price","030"),BooleanClause.Occur.MUST_NOT));
    BitSet bits = booleanFilter.bits(reader);
    assertEquals("MUST_NOT wins over MUST for same docs",0,bits.cardinality());
  }

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      Element clauseElem=(Element) nl.item(i);
      BooleanClause.Occur occurs=BooleanQueryBuilder.getOccursValue(clauseElem);
      
       Element clauseFilter=DOMUtils.getFirstChildOrFail(clauseElem);
       Filter f=factory.getFilter(clauseFilter);
       bf.add(new FilterClause(f,occurs));      
    }
    
    return bf;
  }

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        final double lngRadius = Math.abs(miles / (DEGREES_TO_MILES
                                          * Math.cos(Math.toRadians(lat))));


        final BooleanFilter filter = new BooleanFilter();


        filter.add(new FilterClause(getBoundingFilter(latField, lat, latRadius),
                                    BooleanClause.Occur.MUST));
        filter.add(new FilterClause(getBoundingFilter(lngField, lng, lngRadius),
                                    BooleanClause.Occur.MUST));


        return filter;
    }

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  public void testShould() throws Throwable
  {
    for (int i = 0; i < 2; i++) {
      boolean old = (i==0);
      BooleanFilter booleanFilter = new BooleanFilter();
      booleanFilter.add(new FilterClause(getTermsFilter("price","030", old),BooleanClause.Occur.SHOULD));
      tstFilterCard("Should retrieves only 1 doc",1,booleanFilter);
    }
  }

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  public void testShoulds() throws Throwable
  {
    for (int i = 0; i < 2; i++) {
      boolean old = (i==0);
      BooleanFilter booleanFilter = new BooleanFilter();
      booleanFilter.add(new FilterClause(getRangeFilter("price","010", "020", old),BooleanClause.Occur.SHOULD));
      booleanFilter.add(new FilterClause(getRangeFilter("price","020", "030", old),BooleanClause.Occur.SHOULD));
      tstFilterCard("Shoulds are Ored together",5,booleanFilter);
    }
  }

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  {
    for (int i = 0; i < 2; i++) {
      boolean old = (i==0);


      BooleanFilter booleanFilter = new BooleanFilter();
      booleanFilter.add(new FilterClause(getRangeFilter("price","010", "020", old),BooleanClause.Occur.SHOULD));
      booleanFilter.add(new FilterClause(getRangeFilter("price","020", "030", old),BooleanClause.Occur.SHOULD));
      booleanFilter.add(new FilterClause(getTermsFilter("inStock", "N", old),BooleanClause.Occur.MUST_NOT));
      tstFilterCard("Shoulds Ored but AndNot",4,booleanFilter);
  
      booleanFilter.add(new FilterClause(getTermsFilter("inStock", "Maybe", old),BooleanClause.Occur.MUST_NOT));
      tstFilterCard("Shoulds Ored but AndNots",3,booleanFilter);
    }
    
  }

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  public void testShouldsAndMust() throws Throwable
  {
    for (int i = 0; i < 2; i++) {
      boolean old = (i==0);
      BooleanFilter booleanFilter = new BooleanFilter();
      booleanFilter.add(new FilterClause(getRangeFilter("price","010", "020", old),BooleanClause.Occur.SHOULD));
      booleanFilter.add(new FilterClause(getRangeFilter("price","020", "030", old),BooleanClause.Occur.SHOULD));
      booleanFilter.add(new FilterClause(getTermsFilter("accessRights", "admin", old),BooleanClause.Occur.MUST));
      tstFilterCard("Shoulds Ored but MUST",3,booleanFilter);
    }
  }

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  {
    for (int i = 0; i < 2; i++) {
      boolean old = (i==0);


      BooleanFilter booleanFilter = new BooleanFilter();
      booleanFilter.add(new FilterClause(getRangeFilter("price","010", "020", old),BooleanClause.Occur.SHOULD));
      booleanFilter.add(new FilterClause(getRangeFilter("price","020", "030", old),BooleanClause.Occur.SHOULD));
      booleanFilter.add(new FilterClause(getTermsFilter("accessRights", "admin", old),BooleanClause.Occur.MUST));
      booleanFilter.add(new FilterClause(getRangeFilter("date","20040101", "20041231", old),BooleanClause.Occur.MUST));
      tstFilterCard("Shoulds Ored but MUSTs ANDED",1,booleanFilter);
    }
  }

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  {
    for (int i = 0; i < 2; i++) {
      boolean old = (i==0);


      BooleanFilter booleanFilter = new BooleanFilter();
      booleanFilter.add(new FilterClause(getRangeFilter("price","030", "040", old),BooleanClause.Occur.SHOULD));
      booleanFilter.add(new FilterClause(getTermsFilter("accessRights", "admin", old),BooleanClause.Occur.MUST));
      booleanFilter.add(new FilterClause(getRangeFilter("date","20050101", "20051231", old),BooleanClause.Occur.MUST));
      booleanFilter.add(new FilterClause(getTermsFilter("inStock","N", old),BooleanClause.Occur.MUST_NOT));
      tstFilterCard("Shoulds Ored but MUSTs ANDED and MustNot",0,booleanFilter);
    }
  }

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  {
    for (int i = 0; i < 2; i++) {
      boolean old = (i==0);


      BooleanFilter booleanFilter = new BooleanFilter();
      booleanFilter.add(new FilterClause(getTermsFilter("accessRights", "admin", old),BooleanClause.Occur.MUST));
      tstFilterCard("MUST",3,booleanFilter);
    }
  }

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