@Override
public Explanation explain(LeafReaderContext context, int doc) throws IOException {
Explanation expl = subQueryWeight.explain(context, doc);
if (!expl.isMatch()) {
return expl;
}
// First: Gather explanations for all filters
List<Explanation> filterExplanations = new ArrayList<>();
for (int i = 0; i < filterFunctions.length; ++i) {
Bits docSet =
Lucene.asSequentialAccessBits(
context.reader().maxDoc(), filterWeights[i].scorer(context));
if (docSet.get(doc)) {
FilterFunction filterFunction = filterFunctions[i];
Explanation functionExplanation =
filterFunction.function.getLeafScoreFunction(context).explainScore(doc, expl);
double factor = functionExplanation.getValue();
float sc = CombineFunction.toFloat(factor);
Explanation filterExplanation =
Explanation.match(
sc,
"function score, product of:",
Explanation.match(1.0f, "match filter: " + filterFunction.filter.toString()),
functionExplanation);
filterExplanations.add(filterExplanation);
}
}
if (filterExplanations.size() > 0) {
FiltersFunctionFactorScorer scorer = functionScorer(context);
int actualDoc = scorer.iterator().advance(doc);
assert (actualDoc == doc);
double score = scorer.computeScore(doc, expl.getValue());
Explanation factorExplanation =
Explanation.match(
CombineFunction.toFloat(score),
"function score, score mode ["
+ scoreMode.toString().toLowerCase(Locale.ROOT)
+ "]",
filterExplanations);
expl = combineFunction.explain(expl, factorExplanation, maxBoost);
}
if (minScore != null && minScore > expl.getValue()) {
expl =
Explanation.noMatch(
"Score value is too low, expected at least "
+ minScore
+ " but got "
+ expl.getValue(),
expl);
}
return expl;
}
public Explanation explain(AtomicReaderContext context, int doc) throws IOException {
Explanation mainExplain = mainWeight.explain(context, doc);
return new QueryRescorer(reRankQuery) {
@Override
protected float combine(
float firstPassScore, boolean secondPassMatches, float secondPassScore) {
float score = firstPassScore;
if (secondPassMatches) {
score += reRankWeight * secondPassScore;
}
return score;
}
}.explain(searcher, mainExplain, context.docBase + doc);
}
@Override
public Explanation explain(IndexReader reader, int doc) throws IOException {
SolrIndexReader topReader = (SolrIndexReader) reader;
SolrIndexReader[] subReaders = topReader.getLeafReaders();
int[] offsets = topReader.getLeafOffsets();
int readerPos = SolrIndexReader.readerIndex(doc, offsets);
int readerBase = offsets[readerPos];
Explanation subQueryExpl = qWeight.explain(reader, doc);
if (!subQueryExpl.isMatch()) {
return subQueryExpl;
}
DocValues vals = boostVal.getValues(context, subReaders[readerPos]);
float sc = subQueryExpl.getValue() * vals.floatVal(doc - readerBase);
Explanation res =
new ComplexExplanation(true, sc, BoostedQuery.this.toString() + ", product of:");
res.addDetail(subQueryExpl);
res.addDetail(vals.explain(doc - readerBase));
return res;
}
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;
}
@Override
public Explanation explain(final AtomicReaderContext context, final int doc)
throws IOException {
return weight.explain(context, doc);
}
@Override
public Explanation explain(LeafReaderContext context, int doc) throws IOException {
shardKeyMap.add(context.reader());
return in.explain(context, doc);
}