Examples of org.apache.lucene.search.ConstantScoreRangeQuery

org.apache.lucene.search.ConstantScoreRangeQuery
A range query that returns a constant score equal to its boost for all documents in the range.
It does not have an upper bound on the number of clauses covered in the range.
If an endpoint is null, it is said to be "open". Either or both endpoints may be open. Open endpoints may not be exclusive (you can't select all but the first or last term without explicitly specifying the term to exclude.) @author yonik @version $Id: ConstantScoreRangeQuery.java 472959 2006-11-09 16:21:50Z yonik $


      case IS_AFTER: {
        Term lowerBound = new Term(fieldname, value);
        Term upperBound = new Term(fieldname, MAX_DATE);


        return new ConstantScoreRangeQuery(fieldname, lowerBound.text(), upperBound.text(), false, false);
      }


      case IS_BEFORE: {
        Term lowerBound = new Term(fieldname, MIN_DATE);
        Term upperBound = new Term(fieldname, value);


        return new ConstantScoreRangeQuery(fieldname, lowerBound.text(), upperBound.text(), false, false);
      }
    }


    throw new UnsupportedOperationException("Unsupported Specifier for Date/Time Queries"); //$NON-NLS-1$
  }

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      case IS_GREATER_THAN: {
        Term lowerBound = new Term(fieldname, value);
        Term upperBound = new Term(fieldname, MAX_NUMBER);


        return new ConstantScoreRangeQuery(fieldname, lowerBound.text(), upperBound.text(), false, false);
      }


      case IS_LESS_THAN: {
        Term lowerBound = new Term(fieldname, MIN_NUMBER);
        Term upperBound = new Term(fieldname, value);


        return new ConstantScoreRangeQuery(fieldname, lowerBound.text(), upperBound.text(), false, false);
      }
    }


    throw new UnsupportedOperationException("Unsupported Specifier for Number Queries"); //$NON-NLS-1$
  }

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     * @return the rewritten query or this query if rewriting is not possible.
     * @throws IOException if an error occurs.
     */
    public Query rewrite(IndexReader reader) throws IOException {
        if (transform == TRANSFORM_NONE) {
            return new ConstantScoreRangeQuery(lowerTerm.field(),
                    lowerTerm.text(), upperTerm.text(), inclusive,
                    inclusive).rewrite(reader);
        } else {
            // always use our implementation when we need to transform the
            // term enum

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  public void testGetConstantScoreRangeFragments() throws Exception {


    numHighlights = 0;


    query = new ConstantScoreRangeQuery(FIELD_NAME, "kannedy", "kznnedy", true, true);


    searcher = new IndexSearcher(ramDir);
    // can't rewrite ConstantScoreRangeQuery if you want to highlight it -
    // it rewrites to ConstantScoreQuery which cannot be highlighted
    // query = unReWrittenQuery.rewrite(reader);

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