public Explanation explain(int doc) throws IOException {
float sc = qWeight * vals.floatVal(doc);
Explanation result =
new ComplexExplanation(true, sc, "FunctionQuery(" + func + "), product of:");
result.addDetail(vals.explain(doc));
result.addDetail(new Explanation(getBoost(), "boost"));
result.addDetail(new Explanation(weight.queryNorm, "queryNorm"));
return result;
}
public Explanation explain(int doc) throws IOException {
Explanation subQueryExpl = weight.qWeight.explain(reader, doc);
if (!subQueryExpl.isMatch()) {
return subQueryExpl;
}
float sc = subQueryExpl.getValue() * vals.floatVal(doc);
Explanation res =
new ComplexExplanation(true, sc, BoostedQuery.this.toString() + ", product of:");
res.addDetail(subQueryExpl);
res.addDetail(vals.explain(doc));
return res;
}
@Override
public float score() throws IOException {
float score = qWeight * vals.floatVal(doc);
// Current Lucene priority queues can't handle NaN and -Infinity, so
// map to -Float.MAX_VALUE. This conditional handles both -infinity
// and NaN since comparisons with NaN are always false.
return score > Float.NEGATIVE_INFINITY ? score : -Float.MAX_VALUE;
}
@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;
}