Examples of org.apache.lucene.search.ComplexExplanation

org.apache.lucene.search.ComplexExplanation
Expert: Describes the score computation for document and query, andcan distinguish a match independent of a positive value.

      for(int i = 0; i < valSrcScorers.length; i++) {
        valSrcExpls[i] = valSrcScorers[i].explain(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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      for(int i = 0; i < valSrcScorers.length; i++) {
        valSrcExpls[i] = valSrcScorers[i].explain(doc);
      }
      Explanation customExp = customExplain(doc,subQueryExpl,valSrcExpls);
      float sc = qWeight * customExp.getValue();
      Explanation res = new ComplexExplanation(
        true, sc, CustomScoreQuery.this.toString() + ", product of:");
      res.addDetail(customExp);
      res.addDetail(new Explanation(qWeight, "queryBoost")); // actually using the q boost as q weight (== weight value)
      return res;
    }

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      for(int i = 0; i < valSrcWeights.length; i++) {
        valSrcExpls[i] = valSrcWeights[i].explain(info, doc);
      }
      Explanation customExp = CustomScoreQuery.this.getCustomScoreProvider(info).customExplain(doc,subQueryExpl,valSrcExpls);
      float sc = getBoost() * customExp.getValue();
      Explanation res = new ComplexExplanation(
        true, sc, CustomScoreQuery.this.toString() + ", product of:");
      res.addDetail(customExp);
      res.addDetail(new Explanation(getBoost(), "queryBoost")); // actually using the q boost as q weight (== weight value)
      return res;
    }

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    public Explanation explain(AtomicReaderContext context, int doc) throws IOException {
      BlockJoinScorer scorer = (BlockJoinScorer) scorer(context, context.reader().getLiveDocs());
      if (scorer != null && scorer.advance(doc) == doc) {
        return scorer.explain(context.docBase);
      }
      return new ComplexExplanation(false, 0.0f, "Not a match");
    }

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    }


    public Explanation explain(int docBase) throws IOException {
      int start = docBase + prevParentDoc + 1; // +1 b/c prevParentDoc is previous parent doc
      int end = docBase + parentDoc - 1; // -1 b/c parentDoc is parent doc
      return new ComplexExplanation(
          true, score(), String.format(Locale.ROOT, "Score based on child doc range from %d to %d", start, end)
      );
    }

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      public Explanation explain(AtomicReaderContext context, int doc) throws IOException {
        SVInnerScorer scorer = (SVInnerScorer) bulkScorer(context, false, null);
        if (scorer != null) {
          return scorer.explain(doc);
        }
        return new ComplexExplanation(false, 0.0f, "Not a match");
      }


      @Override
      public boolean scoresDocsOutOfOrder() {
        // We have optimized impls below if we are allowed

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          break;
        }
        docsEnum = null; // goto the next ord.
      } while (docId != DocIdSetIterator.NO_MORE_DOCS);


      return new ComplexExplanation(true, scores[ords[scoreUpto]], "Score based on join value " + termsEnum.term().utf8ToString());
    }

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      for(int i = 0; i < valSrcWeights.length; i++) {
        valSrcExpls[i] = valSrcWeights[i].explain(reader, doc);
      }
      Explanation customExp = 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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        payloadBoost.setValue(payloadScore);
        // GSI: I suppose we could toString the payload, but I don't think that
        // would be a good idea
        payloadBoost.setDescription("scorePayload(...)");
        
        ComplexExplanation result = new ComplexExplanation();
        if (includeSpanScore) {
          result.addDetail(nonPayloadExpl);
          result.addDetail(payloadBoost);
          result.setValue(nonPayloadExpl.getValue() * payloadScore);
          result.setDescription("btq, product of:");
        } else {
          result.addDetail(payloadBoost);
          result.setValue(payloadScore);
          result.setDescription("btq(includeSpanScore=false), result of:");
        }
        result.setMatch(nonPayloadExpl.getValue() == 0 ? Boolean.FALSE
            : Boolean.TRUE); // LUCENE-1303
        return result;
      }

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    }


    @Override
    public Explanation explain(IndexReader reader, int doc) {
      // explain query weight
      Explanation queryExpl = new ComplexExplanation
        (true, getValue(), "MatchNoneDocsQuery, product of:");
      if (getBoost() != 1.0f) {
        queryExpl.addDetail(new Explanation(getBoost(),"boost"));
      }
      queryExpl.addDetail(new Explanation(queryNorm,"queryNorm"));


      return queryExpl;
    }

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