Package org.apache.lucene.search

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

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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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  {
      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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  {
      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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     */
    public Query rewrite(IndexReader reader) throws IOException {
        Query stdRangeQueryImpl
                = new org.apache.lucene.search.RangeQuery(lowerTerm, upperTerm, inclusive);
        try {
            return stdRangeQueryImpl.rewrite(reader);
        } catch (BooleanQuery.TooManyClauses e) {
            log.debug("Too many terms to enumerate, using custom RangeQuery");
            // failed, use own implementation
            return this;
        }
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            protected FilteredTermEnum getEnum(IndexReader reader) throws IOException {
                return new WildcardTermEnum(reader, field, propName, pattern);
            }
        };
        try {
            return stdWildcardQuery.rewrite(reader);
        } catch (BooleanQuery.TooManyClauses e) {
            // MultiTermQuery not possible
            log.debug("Too many terms to enumerate, using custom WildcardQuery.");
            return this;
        }
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    Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_CURRENT);
    BooleanQuery orQuery = new BooleanQuery();
    BooleanQuery andQuery = new BooleanQuery();
    for(int i=0; i< fields.length;i++){
      Query query = new FuzzyQuery(new Term(fields[i], queryString));
      query = query.rewrite(searcher.getIndexReader());
      orQuery.add(query, BooleanClause.Occur.SHOULD);
    }
    andQuery.add(orQuery, BooleanClause.Occur.MUST);
    if(metaDataToSearch != null){
      //search for query string on metadata name field and content
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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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        if (query == null) {
          log.warn("Query object not found; returning original text");
          return text;
        }
        try {
          query = query.rewrite(ctx.getIndexReader());
        } catch (IOException e) {
          log
              .error("Cannot rewrite Query object; returning original text");
          return text;
        }
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