Package org.apache.lucene.search

Examples of org.apache.lucene.search.Searcher

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                Document doc = hits.doc(i + offset);
                float score = hits.score(i + offset);
            ## LUCENE2 end ##*/
            //## LUCENE3 begin ##
            // take a reference as the searcher may change
            Searcher searcher = access.searcher;
            // reuse the same analyzer; it's thread-safe;
            // also allows subclasses to control the analyzer used.
            Analyzer analyzer = access.writer.getAnalyzer();
            QueryParser parser = new QueryParser(Version.LUCENE_30,
                    LUCENE_FIELD_DATA, analyzer);
            Query query = parser.parse(text);
            // Lucene 3 insists on a hard limit and will not provide
            // a total hits value. Take at least 100 which is
            // an optimal limit for Lucene as any more
            // will trigger writing results to disk.
            int maxResults = (limit == 0 ? 100 : limit) + offset;
            TopDocs docs = searcher.search(query, maxResults);
            if (limit == 0) {
                limit = docs.totalHits;
            }
            for (int i = 0, len = docs.scoreDocs.length;
                    i < limit && i + offset < docs.totalHits
                    && i + offset < len; i++) {
                ScoreDoc sd = docs.scoreDocs[i + offset];
                Document doc = searcher.doc(sd.doc);
                float score = sd.score;
                //## LUCENE3 end ##
                String q = doc.get(LUCENE_FIELD_QUERY);
                if (data) {
                    int idx = q.indexOf(" WHERE ");
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    }
  }
   
  private float query(Object index, Query query) {
//    System.out.println("MB=" + (getMemorySize(index) / (1024.0f * 1024.0f)));
    Searcher searcher = null;
    try {
      if (index instanceof Directory)
        searcher = new IndexSearcher((Directory)index);
      else
        searcher = ((MemoryIndex) index).createSearcher();

      final float[] scores = new float[1]; // inits to 0.0f
      searcher.search(query, new HitCollector() {
        public void collect(int doc, float score) {
          scores[0] = score;
        }
      });
      float score = scores[0];
//      Hits hits = searcher.search(query);
//      float score = hits.length() > 0 ? hits.score(0) : 0.0f;
      return score;
    } catch (IOException e) { // should never happen (RAMDirectory)
      throw new RuntimeException(e);
    } finally {
      try {
        if (searcher != null) searcher.close();
      } catch (IOException e) { // should never happen (RAMDirectory)
        throw new RuntimeException(e);
      }
    }
  }
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      IndexReader reader = IndexReader.open(ramDir);
      String queryString = QUERY;
      QueryParser parser=new QueryParser(FIELD_NAME, /*new StandardAnalyzer()/*/XFactory.getWriterAnalyzer());
      Query query = parser.parse(queryString);
      System.out.println(query);
      Searcher searcher = new IndexSearcher(ramDir);
      query = query.rewrite(reader);
      System.out.println(query);
      System.out.println("Searching for: " + query.toString(FIELD_NAME));
      Hits hits = searcher.search(query);
     
      BoldFormatter formatter = new BoldFormatter();
      Highlighter highlighter =new Highlighter(formatter,new QueryScorer(query));
      highlighter.setTextFragmenter(new SimpleFragmenter(50));
      for (int i = 0; i < hits.length(); i++)
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    IndexReader reader = IndexReader.open(ramDir);
    String queryString = QUERY;
    QueryParser parser = new QueryParser(Version.LUCENE_CURRENT, FIELD_NAME, analyzer);
    Query query = parser.parse(queryString);
    Searcher searcher = new IndexSearcher(ramDir);
    query = query.rewrite(reader);
    System.out.println("Searching for: " + query.toString(FIELD_NAME));
    TopDocs hits = searcher.search(query, 10);

    BoldFormatter formatter = new BoldFormatter();
    Highlighter highlighter = new Highlighter(formatter, new QueryScorer(
        query));
    highlighter.setTextFragmenter(new SimpleFragmenter(50));
    for (int i = 0; i < hits.scoreDocs.length; i++) {
      int docId = hits.scoreDocs[i].doc;
      Document hit = searcher.doc(docId);
      String text = hit.get(FIELD_NAME);
      int maxNumFragmentsRequired = 5;
      String fragmentSeparator = "...";
      TermPositionVector tpv = (TermPositionVector) reader
          .getTermFreqVector(docId, FIELD_NAME);
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    IndexReader reader = IndexReader.open(ramDir);
    String queryString = QUERY;
    QueryParser parser = new QueryParser(Version.LUCENE_CURRENT, FIELD_NAME, analyzer);
    Query query = parser.parse(queryString);
    Searcher searcher = new IndexSearcher(ramDir);
    query = query.rewrite(reader);
    System.out.println("Searching for: " + query.toString(FIELD_NAME));
    TopDocs hits = searcher.search(query, 10);   

    BoldFormatter formatter = new BoldFormatter();
    Highlighter highlighter = new Highlighter(formatter, new QueryScorer(
        query));
    highlighter.setTextFragmenter(new SimpleFragmenter(50));
    for (int i = 0; i < hits.scoreDocs.length; i++) {
      int docId = hits.scoreDocs[i].doc;
      Document hit = searcher.doc(docId);
      String text = hit.get(FIELD_NAME);
      int maxNumFragmentsRequired = 5;
      String fragmentSeparator = "...";
      TermPositionVector tpv = (TermPositionVector) reader
          .getTermFreqVector(docId, FIELD_NAME);
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    IndexReader reader = IndexReader.open(ramDir);
    String queryString = QUERY;
    QueryParser parser = new QueryParser(Version.LUCENE_CURRENT, FIELD_NAME, analyzer);
    Query query = parser.parse(queryString);
    Searcher searcher = new IndexSearcher(ramDir);
    query = query.rewrite(reader);
    System.out.println("Searching for: " + query.toString(FIELD_NAME));
    TopDocs hits = searcher.search(query, 10);   

    BoldFormatter formatter = new BoldFormatter();
    Highlighter highlighter = new Highlighter(formatter, new QueryScorer(
        query));
    highlighter.setTextFragmenter(new SimpleFragmenter(50));
    for (int i = 0; i < hits.scoreDocs.length; i++) {
      int docId = hits.scoreDocs[i].doc;
      Document hit = searcher.doc(docId);
      String text = hit.get(FIELD_NAME);
      int maxNumFragmentsRequired = 5;
      String fragmentSeparator = "...";
      TermPositionVector tpv = (TermPositionVector) reader
          .getTermFreqVector(docId, FIELD_NAME);
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    IndexReader reader = IndexReader.open(ramDir);
    String queryString = QUERY;
    QueryParser parser = new QueryParser(Version.LUCENE_CURRENT, FIELD_NAME, analyzer);
    Query query = parser.parse(queryString);
    Searcher searcher = new IndexSearcher(ramDir);
    query = query.rewrite(reader);
    System.out.println("Searching for: " + query.toString(FIELD_NAME));
    TopDocs hits = searcher.search(query, 10);

    BoldFormatter formatter = new BoldFormatter();
    Highlighter highlighter = new Highlighter(formatter, new QueryScorer(
        query));
    highlighter.setTextFragmenter(new SimpleFragmenter(50));
    for (int i = 0; i < hits.scoreDocs.length; i++) {
      int docId = hits.scoreDocs[i].doc;
      Document hit = searcher.doc(docId);
      String text = hit.get(FIELD_NAME);
      int maxNumFragmentsRequired = 5;
      String fragmentSeparator = "...";
      TermPositionVector tpv = (TermPositionVector) reader
          .getTermFreqVector(docId, FIELD_NAME);
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    IndexReader reader = IndexReader.open(ramDir);
    String queryString = QUERY;
    QueryParser parser = new QueryParser(Version.LUCENE_CURRENT, FIELD_NAME, analyzer);
    Query query = parser.parse(queryString);
    Searcher searcher = new IndexSearcher(ramDir);
    query = query.rewrite(reader);
    System.out.println("Searching for: " + query.toString(FIELD_NAME));
    TopDocs hits = searcher.search(query, 10);

    BoldFormatter formatter = new BoldFormatter();
    Highlighter highlighter = new Highlighter(formatter, new QueryScorer(
        query));
    highlighter.setTextFragmenter(new SimpleFragmenter(50));
    for (int i = 0; i < hits.scoreDocs.length; i++) {
      int docId = hits.scoreDocs[i].doc;
      Document hit = searcher.doc(docId);
      String text = hit.get(FIELD_NAME);
      int maxNumFragmentsRequired = 5;
      String fragmentSeparator = "...";
      TermPositionVector tpv = (TermPositionVector) reader
          .getTermFreqVector(docId, FIELD_NAME);
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   */
  public float search(Query query) {
    if (query == null)
      throw new IllegalArgumentException("query must not be null");
   
    Searcher searcher = createSearcher();
    try {
      final float[] scores = new float[1]; // inits to 0.0f (no match)
      searcher.search(query, new Collector() {
        private Scorer scorer;

        @Override
        public void collect(int doc) throws IOException {
          scores[0] = scorer.score();
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    Query query = lq.makeLuceneQueryField(fieldName, qf);
    /* if (verbose) System.out.println("Lucene: " + query.toString()); */

    TestCollector tc = new TestCollector();
    Searcher searcher = new IndexSearcher(dBase.getDb(), true);
    try {
      searcher.search(query, tc);
    } finally {
      searcher.close();
    }
    tc.checkNrHits();
  }
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