Package org.apache.lucene.search

Examples of org.apache.lucene.search.Query.rewrite()

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   * we rewrite against an empty indexreader: as we don't want things like
   * rangeQueries that don't summarize the document
   */
  private static Query rewrite(Query original) throws IOException {
    Query query = original;
    for (Query rewrittenQuery = query.rewrite(EMPTY_INDEXREADER); rewrittenQuery != query;
         rewrittenQuery = query.rewrite(EMPTY_INDEXREADER)) {
      query = rewrittenQuery;
    }
    return query;
  }
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   * rangeQueries that don't summarize the document
   */
  private static Query rewrite(Query original) throws IOException {
    Query query = original;
    for (Query rewrittenQuery = query.rewrite(EMPTY_INDEXREADER); rewrittenQuery != query;
         rewrittenQuery = query.rewrite(EMPTY_INDEXREADER)) {
      query = rewrittenQuery;
    }
    return query;
  }
 
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  public void testFuzzyLikeThisQueryXML() throws Exception {
    Query q = parse("FuzzyLikeThisQuery.xml");
    //show rewritten fuzzyLikeThisQuery - see what is being matched on
    if (VERBOSE) {
      System.out.println(q.rewrite(reader));
    }
    dumpResults("FuzzyLikeThis", q, 5);
  }

  public void testTermsFilterXML() throws Exception {
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      // For all clauses e.g. one* two~
      for (int i = 0; i < bclauses.length; i++) {
        // HashSet bclauseterms=new HashSet();
        Query qc = bclauses[i].getQuery();
        // Rewrite this clause e.g one* becomes (one OR onerous)
        qc = qc.rewrite(reader);
        if (bclauses[i].getOccur().equals(BooleanClause.Occur.MUST_NOT)) {
          numNegatives++;
        }

        if (qc instanceof BooleanQuery) {
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  {
      Query q=parse("FuzzyLikeThisQuery.xml");
      //show rewritten fuzzyLikeThisQuery - see what is being matched on
      if(printResults)
      {
        System.out.println(q.rewrite(reader));
      }
      dumpResults("FuzzyLikeThis", q, 5);
  }
  public void testTermsFilterXML() throws Exception
  {
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      // For all clauses e.g. one* two~
      for (int i = 0; i < bclauses.length; i++) {
        // HashSet bclauseterms=new HashSet();
        Query qc = bclauses[i].getQuery();
        // Rewrite this clause e.g one* becomes (one OR onerous)
        qc = qc.rewrite(reader);
        if (bclauses[i].getOccur().equals(BooleanClause.Occur.MUST_NOT)) {
          numNegatives++;
        }

        if (qc instanceof BooleanQuery) {
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      // For all clauses e.g. one* two~
      for (int i = 0; i < bclauses.length; i++) {
        // HashSet bclauseterms=new HashSet();
        Query qc = bclauses[i].getQuery();
        // Rewrite this clause e.g one* becomes (one OR onerous)
        qc = qc.rewrite(reader);
        if (bclauses[i].getOccur().equals(BooleanClause.Occur.MUST_NOT)) {
          numNegatives++;
        }

        if (qc instanceof BooleanQuery) {
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  {
      Query q=parse("FuzzyLikeThisQuery.xml");
      //show rewritten fuzzyLikeThisQuery - see what is being matched on
      if(printResults)
      {
        System.out.println(q.rewrite(reader));
      }
      dumpResults("FuzzyLikeThis", q, 5);
  }
  public void testTermsFilterXML() throws Exception
  {
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            protected FilteredTermEnum getEnum(IndexReader reader) throws IOException {
                return new WildcardTermEnum(reader, field, tvf, pattern, transform);
            }
        };
        try {
            multiTermQuery = stdWildcardQuery.rewrite(reader);
            return multiTermQuery;
        } catch (BooleanQuery.TooManyClauses e) {
            // MultiTermQuery not possible
            log.debug("Too many terms to enumerate, using custom WildcardQuery.");
            return this;
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            return new WildcardTermEnum(reader, field, propName, pattern, transform);
         }
      };
      try
      {
         multiTermQuery = stdWildcardQuery.rewrite(reader);
         return multiTermQuery;
      }
      catch (BooleanQuery.TooManyClauses e)
      {
         // MultiTermQuery not possible
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