class DisjunctionSumScorer {
/** @return An explanation for the score of a given document. */
public Explanation explain(int doc) throws IOException {
Explanation res = new Explanation();
Iterator ssi = subScorers.iterator();
float sumScore = 0.0f;
int nrMatches = 0;
while (ssi.hasNext()) {
Explanation es = ((Scorer) ssi.next()).explain(doc);
if (es.getValue() > 0.0f) { // indicates match
sumScore += es.getValue();
nrMatches++;
}
res.addDetail(es);
}
if (nrMatchers >= minimumNrMatchers) {
res.setValue(sumScore);
res.setDescription("sum over at least " + minimumNrMatchers
+ " of " + subScorers.size() + ":");
} else {
res.setValue(0.0f);
res.setDescription(nrMatches + " match(es) but at least "
+ minimumNrMatchers + " of "
+ subScorers.size() + " needed");
}
return res;
}
}
