class DisjunctionMaxQuery.DisjunctionMaxWeight {
/* Explain the score we computed for doc */
public Explanation explain(IndexReader reader, int doc) throws IOException {
if (disjuncts.size() == 1) return ((Weight) weights.get(0)).explain(reader,doc);
ComplexExplanation result = new ComplexExplanation();
float max = 0.0f, sum = 0.0f;
result.setDescription(tieBreakerMultiplier == 0.0f ? "max of:" : "max plus " + tieBreakerMultiplier + " times others of:");
for (Iterator iter = weights.iterator(); iter.hasNext();) {
Explanation e = ((Weight) iter.next()).explain(reader, doc);
if (e.isMatch()) {
result.setMatch(Boolean.TRUE);
result.addDetail(e);
sum += e.getValue();
max = Math.max(max, e.getValue());
}
}
result.setValue(max + (sum - max) * tieBreakerMultiplier);
return result;
}
}
