@Override
public int score(LeafCollector collector, Bits acceptDocs, int min, int maxDoc)
throws IOException {
if (min != 0) {
throw new IllegalArgumentException("min must be 0, got " + min);
}
if (maxDoc != Integer.MAX_VALUE) {
throw new IllegalArgumentException("maxDoc must be Integer.MAX_VALUE");
}
// if (DEBUG) {
// System.out.println("\nscore: reader=" + context.reader());
// }
// System.out.println("score r=" + context.reader());
FakeScorer scorer = new FakeScorer();
collector.setScorer(scorer);
if (drillDownCollector != null) {
drillDownLeafCollector = drillDownCollector.getLeafCollector(context);
drillDownLeafCollector.setScorer(scorer);
} else {
drillDownLeafCollector = null;
}
for (DocsAndCost dim : dims) {
dim.sidewaysLeafCollector = dim.sidewaysCollector.getLeafCollector(context);
dim.sidewaysLeafCollector.setScorer(scorer);
}
// TODO: if we ever allow null baseScorer ... it will
// mean we DO score docs out of order ... hmm, or if we
// change up the order of the conjuntions below
assert baseScorer != null;
// some scorers, eg ReqExlScorer, can hit NPE if cost is called after nextDoc
long baseQueryCost = baseScorer.cost();
final int numDims = dims.length;
long drillDownCost = 0;
for (int dim = 0; dim < numDims; dim++) {
drillDownCost += dims[dim].approximation.cost();
}
long drillDownAdvancedCost = 0;
if (numDims > 1) {
drillDownAdvancedCost = dims[1].approximation.cost();
}
// Position all scorers to their first matching doc:
baseScorer.nextDoc();
for (DocsAndCost dim : dims) {
dim.approximation.nextDoc();
}
/*
System.out.println("\nbaseDocID=" + baseScorer.docID() + " est=" + estBaseHitCount);
System.out.println(" maxDoc=" + context.reader().maxDoc());
System.out.println(" maxCost=" + maxCost);
System.out.println(" dims[0].freq=" + dims[0].freq);
if (numDims > 1) {
System.out.println(" dims[1].freq=" + dims[1].freq);
}
*/
if (scoreSubDocsAtOnce || baseQueryCost < drillDownCost / 10) {
// System.out.println("queryFirst: baseScorer=" + baseScorer + " disis.length=" + disis.length
// + " bits.length=" + bits.length);
doQueryFirstScoring(acceptDocs, collector, dims);
} else if (numDims > 1 && drillDownAdvancedCost < baseQueryCost / 10) {
// System.out.println("drillDownAdvance");
doDrillDownAdvanceScoring(acceptDocs, collector, dims);
} else {
// System.out.println("union");
doUnionScoring(acceptDocs, collector, dims);
}
return Integer.MAX_VALUE;
}
@Override
public long cost() {
return baseScorer.cost();
}