Package org.apache.lucene.search

Examples of org.apache.lucene.search.Explanation

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    assertTrue("hits is null and it shouldn't be", hits != null);
    assertTrue("should be 10 hits", hits.totalHits == 10);
    for (int j = 0; j < hits.scoreDocs.length; j++) {
      ScoreDoc doc = hits.scoreDocs[j];
      assertTrue(doc.score + " does not equal: " + 2, doc.score == 2);
      Explanation explain = searcher.explain(query, hits.scoreDocs[j].doc);
      String exp = explain.toString();
      assertTrue(exp, exp.indexOf("MinPayloadFunction") > -1);
      assertTrue(hits.scoreDocs[j].score + " explain value does not equal: " + 2, explain.getValue() == 2f);
    }
  } 
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      return new CustomScorer(similarity, reader, this, subQueryScorer, valSrcScorers);
    }

    @Override
    public Explanation explain(IndexReader reader, int doc) throws IOException {
      Explanation explain = doExplain(reader, doc);
      return explain == null ? new Explanation(0.0f, "no matching docs") : explain;
    }
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      Explanation explain = doExplain(reader, doc);
      return explain == null ? new Explanation(0.0f, "no matching docs") : explain;
    }
   
    private Explanation doExplain(IndexReader reader, int doc) throws IOException {
      Explanation subQueryExpl = subQueryWeight.explain(reader, doc);
      if (!subQueryExpl.isMatch()) {
        return subQueryExpl;
      }
      // match
      Explanation[] valSrcExpls = new Explanation[valSrcWeights.length];
      for(int i = 0; i < valSrcWeights.length; i++) {
        valSrcExpls[i] = valSrcWeights[i].explain(reader, doc);
      }
      Explanation customExp = CustomScoreQuery.this.getCustomScoreProvider(reader).customExplain(doc,subQueryExpl,valSrcExpls);
      float sc = getValue() * customExp.getValue();
      Explanation res = new ComplexExplanation(
        true, sc, CustomScoreQuery.this.toString() + ", product of:");
      res.addDetail(customExp);
      res.addDetail(new Explanation(getValue(), "queryBoost")); // actually using the q boost as q weight (== weight value)
      return res;
    }
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      //The implementation is changed to this way as in case of NRT index manager the number of created documents may
      //differ comparing to the simple configuration.
      while (true) {
         try {
            Explanation found = cacheQuery.explain(i);

            if(found.isMatch())
               matchCounter++;

            i++;
         } catch(ArrayIndexOutOfBoundsException ex) {
            break;
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    public static void explainQuery(IndexSearcher searcher, Query query)
            throws IOException {
        TopDocs topDocs = searcher.search(query, 10);
        for (ScoreDoc match : topDocs.scoreDocs) {
            Explanation explanation = searcher.explain(query, match.doc);
            System.out.println("---------------");
            System.out.println(explanation.toString());
        }
    }
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       * {@inheritDoc}
       */
      @Override
      public Explanation explain(IndexReader reader, int doc) throws IOException
      {
         return new Explanation();
      }
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       * {@inheritDoc}
       */
      @Override
      public Explanation explain(IndexReader reader, int doc) throws IOException
      {
         return new Explanation();
      }
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       * {@inheritDoc}
       */
      @Override
      public Explanation explain(IndexReader reader, int doc) throws IOException
      {
         return new Explanation();
      }
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        /**
         * {@inheritDoc}
         */
        @Override
      public Explanation explain(IndexReader reader, int doc) throws IOException {
            return new Explanation();
        }
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        /**
         * {@inheritDoc}
         */
        @Override
      public Explanation explain(int doc) throws IOException {
            return new Explanation();
        }
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