public static Map<String, Integer> termFrequencies(
IndexSearcher indexSearcher,
Query documentFilterQuery,
String fieldName,
String propName,
String altName) {
try {
String luceneField = ComplexFieldUtil.propertyField(fieldName, propName, altName);
Weight weight = indexSearcher.createNormalizedWeight(documentFilterQuery, false);
Map<String, Integer> freq = new HashMap<>();
IndexReader indexReader = indexSearcher.getIndexReader();
for (LeafReaderContext arc : indexReader.leaves()) {
if (weight == null) throw new RuntimeException("weight == null");
if (arc == null) throw new RuntimeException("arc == null");
if (arc.reader() == null) throw new RuntimeException("arc.reader() == null");
Scorer scorer = weight.scorer(arc, arc.reader().getLiveDocs());
if (scorer != null) {
while (scorer.nextDoc() != DocIdSetIterator.NO_MORE_DOCS) {
getFrequenciesFromTermVector(
indexReader, scorer.docID() + arc.docBase, luceneField, freq);
}
}
}
return freq;
} catch (IOException e) {
throw ExUtil.wrapRuntimeException(e);
}
}
/**
* Used when base query is highly constraining vs the drilldowns, or when the docs must be scored
* at once (i.e., like BooleanScorer2, not BooleanScorer). In this case we just .next() on base
* and .advance() on the dim filters.
*/
private void doQueryFirstScoring(Bits acceptDocs, LeafCollector collector, DocsAndCost[] dims)
throws IOException {
// if (DEBUG) {
// System.out.println(" doQueryFirstScoring");
// }
int docID = baseScorer.docID();
nextDoc:
while (docID != PostingsEnum.NO_MORE_DOCS) {
if (acceptDocs != null && acceptDocs.get(docID) == false) {
docID = baseScorer.nextDoc();
continue;
}
LeafCollector failedCollector = null;
for (DocsAndCost dim : dims) {
// TODO: should we sort this 2nd dimension of
// docsEnums from most frequent to least?
if (dim.approximation.docID() < docID) {
dim.approximation.advance(docID);
}
boolean matches = false;
if (dim.approximation.docID() == docID) {
if (dim.twoPhase == null) {
matches = true;
} else {
matches = dim.twoPhase.matches();
}
}
if (matches == false) {
if (failedCollector != null) {
// More than one dim fails on this document, so
// it's neither a hit nor a near-miss; move to
// next doc:
docID = baseScorer.nextDoc();
continue nextDoc;
} else {
failedCollector = dim.sidewaysLeafCollector;
}
}
}
collectDocID = docID;
// TODO: we could score on demand instead since we are
// daat here:
collectScore = baseScorer.score();
if (failedCollector == null) {
// Hit passed all filters, so it's "real":
collectHit(collector, dims);
} else {
// Hit missed exactly one filter:
collectNearMiss(failedCollector);
}
docID = baseScorer.nextDoc();
}
}
private InternalSearchHit.InternalNestedIdentity getInternalNestedIdentity(
SearchContext context,
int nestedSubDocId,
LeafReaderContext subReaderContext,
DocumentMapper documentMapper,
ObjectMapper nestedObjectMapper)
throws IOException {
int currentParent = nestedSubDocId;
ObjectMapper nestedParentObjectMapper;
ObjectMapper current = nestedObjectMapper;
String originalName = nestedObjectMapper.name();
InternalSearchHit.InternalNestedIdentity nestedIdentity = null;
do {
Query parentFilter;
nestedParentObjectMapper = documentMapper.findParentObjectMapper(current);
if (nestedParentObjectMapper != null) {
if (nestedParentObjectMapper.nested().isNested() == false) {
current = nestedParentObjectMapper;
continue;
}
parentFilter = nestedParentObjectMapper.nestedTypeFilter();
} else {
parentFilter = Queries.newNonNestedFilter();
}
Query childFilter = nestedObjectMapper.nestedTypeFilter();
if (childFilter == null) {
current = nestedParentObjectMapper;
continue;
}
final Weight childWeight = context.searcher().createNormalizedWeight(childFilter, false);
Scorer childScorer = childWeight.scorer(subReaderContext);
if (childScorer == null) {
current = nestedParentObjectMapper;
continue;
}
DocIdSetIterator childIter = childScorer.iterator();
BitSet parentBits =
context.bitsetFilterCache().getBitSetProducer(parentFilter).getBitSet(subReaderContext);
int offset = 0;
int nextParent = parentBits.nextSetBit(currentParent);
for (int docId = childIter.advance(currentParent + 1);
docId < nextParent && docId != DocIdSetIterator.NO_MORE_DOCS;
docId = childIter.nextDoc()) {
offset++;
}
currentParent = nextParent;
current = nestedObjectMapper = nestedParentObjectMapper;
int currentPrefix = current == null ? 0 : current.name().length() + 1;
nestedIdentity =
new InternalSearchHit.InternalNestedIdentity(
originalName.substring(currentPrefix), offset, nestedIdentity);
if (current != null) {
originalName = current.name();
}
} while (current != null);
return nestedIdentity;
}
@Override
public void setScorer(Scorer scorer) {
// System.out.println("C.setScorer scorer=" + scorer);
// Since we invoke .score(), and the comparators likely
// do as well, cache it so it's only "really" computed
// once:
this.scorer = new ScoreCachingWrappingScorer(scorer);
for (int compIDX = 0; compIDX < comparators.length; compIDX++) {
comparators[compIDX].setScorer(this.scorer);
}
Arrays.fill(joinScorers, null);
Queue<Scorer> queue = new LinkedList<>();
// System.out.println("\nqueue: add top scorer=" + scorer);
queue.add(scorer);
while ((scorer = queue.poll()) != null) {
// System.out.println(" poll: " + scorer + "; " + scorer.getWeight().getQuery());
if (scorer instanceof ToParentBlockJoinQuery.BlockJoinScorer) {
enroll(
(ToParentBlockJoinQuery) scorer.getWeight().getQuery(),
(ToParentBlockJoinQuery.BlockJoinScorer) scorer);
}
for (ChildScorer sub : scorer.getChildren()) {
// System.out.println(" add sub: " + sub.child + "; " + sub.child.getWeight().getQuery());
queue.add(sub.child);
}
}
}
@Override
public Explanation explain(AtomicReaderContext context, int doc) throws IOException {
Scorer scorer = scorer(context, true, false, context.reader().getLiveDocs());
if (scorer != null) {
int newDoc = scorer.advance(doc);
if (newDoc == doc) {
float freq = scorer.freq();
SloppySimScorer docScorer = similarity.sloppySimScorer(stats, context);
ComplexExplanation result = new ComplexExplanation();
result.setDescription(
"weight("
+ getQuery()
+ " in "
+ doc
+ ") ["
+ similarity.getClass().getSimpleName()
+ "], result of:");
Explanation scoreExplanation =
docScorer.explain(doc, new Explanation(freq, "phraseFreq=" + freq));
result.addDetail(scoreExplanation);
result.setValue(scoreExplanation.getValue());
result.setMatch(true);
return result;
}
}
return new ComplexExplanation(false, 0.0f, "no matching term");
}
// NOTE: acceptDocs applies (and is checked) only in the
// parent document space
@Override
public Scorer scorer(LeafReaderContext readerContext) throws IOException {
final Scorer childScorer = childWeight.scorer(readerContext);
if (childScorer == null) {
// No matches
return null;
}
final int firstChildDoc = childScorer.iterator().nextDoc();
if (firstChildDoc == DocIdSetIterator.NO_MORE_DOCS) {
// No matches
return null;
}
// NOTE: this does not take accept docs into account, the responsibility
// to not match deleted docs is on the scorer
final BitSet parents = parentsFilter.getBitSet(readerContext);
if (parents == null) {
// No matches
return null;
}
return new BlockJoinScorer(this, childScorer, parents, firstChildDoc, scoreMode);
}
/*(non-Javadoc) @see org.apache.lucene.search.Scorer#score() */
@Override
public float score() throws IOException {
for (int i = 0; i < valSrcScorers.length; i++) {
vScores[i] = valSrcScorers[i].score();
}
return qWeight
* provider.customScore(subQueryScorer.docID(), subQueryScorer.score(), vScores);
}
/** Replay the wrapped collector, but only on a selection of buckets. */
@Override
public void prepareSelectedBuckets(long... selectedBuckets) throws IOException {
if (!finished) {
throw new IllegalStateException(
"Cannot replay yet, collection is not finished: postCollect() has not been called");
}
if (this.selectedBuckets != null) {
throw new IllegalStateException("Already been replayed");
}
final LongHash hash = new LongHash(selectedBuckets.length, BigArrays.NON_RECYCLING_INSTANCE);
for (long bucket : selectedBuckets) {
hash.add(bucket);
}
this.selectedBuckets = hash;
collector.preCollection();
boolean needsScores = collector.needsScores();
Weight weight = null;
if (needsScores) {
weight =
aggContext
.searchContext()
.searcher()
.createNormalizedWeight(aggContext.searchContext().query(), true);
}
for (Entry entry : entries) {
final LeafBucketCollector leafCollector = collector.getLeafCollector(entry.context);
DocIdSetIterator docIt = null;
if (needsScores && entry.docDeltas.size() > 0) {
Scorer scorer = weight.scorer(entry.context);
// We don't need to check if the scorer is null
// since we are sure that there are documents to replay (entry.docDeltas it not empty).
docIt = scorer.iterator();
leafCollector.setScorer(scorer);
}
final PackedLongValues.Iterator docDeltaIterator = entry.docDeltas.iterator();
final PackedLongValues.Iterator buckets = entry.buckets.iterator();
int doc = 0;
for (long i = 0, end = entry.docDeltas.size(); i < end; ++i) {
doc += docDeltaIterator.next();
final long bucket = buckets.next();
final long rebasedBucket = hash.find(bucket);
if (rebasedBucket != -1) {
if (needsScores) {
if (docIt.docID() < doc) {
docIt.advance(doc);
}
// aggregations should only be replayed on matching documents
assert docIt.docID() == doc;
}
leafCollector.collect(doc, rebasedBucket);
}
}
}
collector.postCollection();
}
@Override
public float score() throws IOException {
float score = qWeight * scorer.score() * vals.floatVal(scorer.docID());
// 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;
}
protected AugmentScorer(
BoboIndexReader reader, Scorer innerScorer, ScoreAugmentFunction func, JSONObject jsonParms)
throws IOException {
super(innerScorer.getSimilarity());
_innerScorer = innerScorer;
_func = func;
_func.initializeReader(reader, jsonParms);
}
@Override
public void collect(int doc) throws IOException {
if (typeCache == null) {
return;
}
HashedBytesArray parentUid = typeCache.idByDoc(doc);
uidToScore.put(parentUid, scorer.score());
}
@Override
public int advance(int target) throws IOException {
int doc = subQueryScorer.advance(target);
if (doc != NO_MORE_DOCS) {
for (int i = 0; i < valSrcScorers.length; i++) {
valSrcScorers[i].advance(doc);
}
}
return doc;
}
/**
* Get a list of all Spans made available from the passed-in Scorer
*
* @param scorer the scorer to extract spans from
* @param errorOnNoSpans if true, throw an error if no Spans can be extracted from the Scorer or
* any of its children
* @return a List of Spans
*/
public static List<Spans> getSpans(Scorer scorer, boolean errorOnNoSpans) {
List<Spans> spans = new ArrayList<>();
if (scorer instanceof Spans) {
spans.add((Spans) scorer);
return spans;
}
Collection<Scorer.ChildScorer> children = scorer.getChildren();
if (errorOnNoSpans && children.size() == 0)
throw new RuntimeException(
"Couldn't extract SpanScorer from " + scorer.getClass().getCanonicalName());
for (Scorer.ChildScorer child : children) {
spans.addAll(getSpans(child.child, errorOnNoSpans));
}
return spans;
}
DocsAndCost(Scorer scorer, Collector sidewaysCollector) {
final TwoPhaseIterator twoPhase = scorer.asTwoPhaseIterator();
if (twoPhase == null) {
this.approximation = scorer;
this.twoPhase = null;
} else {
this.approximation = twoPhase.approximation();
this.twoPhase = twoPhase;
}
this.sidewaysCollector = sidewaysCollector;
}
@Override
public void collect(int doc) throws IOException {
if (counter >= from) {
docs.add(new ScoreDoc(docBase + doc, trackScores ? scorer.score() : 0f));
}
readerState.count++;
counter++;
if (counter >= to) {
throw StopCollectingException;
}
}
@Override
protected void search(List<LeafReaderContext> leaves, Weight weight, Collector collector)
throws IOException {
for (LeafReaderContext ctx : leaves) { // search each subreader
// we force the use of Scorer (not BulkScorer) to make sure
// that the scorer passed to LeafCollector.setScorer supports
// Scorer.getChildren
Scorer scorer = weight.scorer(ctx);
if (scorer != null) {
final LeafCollector leafCollector = collector.getLeafCollector(ctx);
leafCollector.setScorer(scorer);
final Bits liveDocs = ctx.reader().getLiveDocs();
for (int doc = scorer.nextDoc();
doc != DocIdSetIterator.NO_MORE_DOCS;
doc = scorer.nextDoc()) {
if (liveDocs == null || liveDocs.get(doc)) {
leafCollector.collect(doc);
}
}
}
}
}
@Override
public Explanation explain(AtomicReaderContext context, int doc) throws IOException {
Scorer scorer = scorer(context, context.reader().getLiveDocs());
if (scorer != null) {
int newDoc = scorer.advance(doc);
if (newDoc == doc) {
float score = scorer.score();
ComplexExplanation result = new ComplexExplanation();
result.setDescription("ImageHashLimitQuery, product of:");
result.setValue(score);
if (getBoost() != 1.0f) {
result.addDetail(new Explanation(getBoost(), "boost"));
score = score / getBoost();
}
result.addDetail(new Explanation(score, "image score (1/distance)"));
result.setMatch(true);
return result;
}
}
return new ComplexExplanation(false, 0.0f, "no matching term");
}
/**
* Collect all Spans extracted from a Scorer using a SpanCollector
*
* @param scorer the scorer to extract Spans from
* @param collector the SpanCollector
* @param errorOnNoSpans if true, throw an error if no Spans can be extracted from the Scorer or
* any of its children
* @throws IOException on error
*/
public static void collect(Scorer scorer, SpanCollector collector, boolean errorOnNoSpans)
throws IOException {
List<Spans> allSpans = getSpans(scorer, errorOnNoSpans);
int doc = scorer.docID();
for (Spans spans : allSpans) {
int spanDoc = spans.docID();
// if the Scorer advances lazily, then not all of its subspans may be on
// the correct document
if (spanDoc == doc || (spanDoc < doc && spans.advance(doc) == doc)) {
while (spans.nextStartPosition() != Spans.NO_MORE_POSITIONS) {
spans.collect(collector);
}
}
}
}
@Override
public void collect(int doc) throws IOException {
if (values != null) {
long ord = ordinals.getOrd(doc);
long parentIdx = parentIdsIndex.get(ord);
if (parentIdx < 0) {
final BytesRef bytes = values.getValueByOrd(ord);
final int hash = values.currentValueHash();
parentIdx = parentIds.add(bytes, hash);
if (parentIdx < 0) {
parentIdx = -parentIdx - 1;
doScore(parentIdx);
} else {
scores = bigArrays.grow(scores, parentIdx + 1);
scores.set(parentIdx, scorer.score());
}
parentIdsIndex.set(ord, parentIdx);
} else {
doScore(parentIdx);
}
}
}
@Override
protected void collect(int doc, HashedBytesArray parentUid) throws IOException {
float currentScore = scorer.score();
switch (scoreType) {
case SUM:
uidToScore.addTo(parentUid, currentScore);
break;
case MAX:
if (uidToScore.containsKey(parentUid)) {
float previousScore = uidToScore.lget();
if (currentScore > previousScore) {
uidToScore.lset(currentScore);
}
} else {
uidToScore.put(parentUid, currentScore);
}
break;
case AVG:
assert false : "AVG has its own collector";
default:
assert false : "Are we missing a score type here? -- " + scoreType;
break;
}
}
@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 void collect(int parentDoc) throws IOException {
// System.out.println("\nC parentDoc=" + parentDoc);
totalHitCount++;
float score = Float.NaN;
if (trackMaxScore) {
score = scorer.score();
maxScore = Math.max(maxScore, score);
}
// TODO: we could sweep all joinScorers here and
// aggregate total child hit count, so we can fill this
// in getTopGroups (we wire it to 0 now)
if (queueFull) {
// System.out.println(" queueFull");
// Fastmatch: return if this hit is not competitive
for (int i = 0; ; i++) {
final int c = reverseMul[i] * comparators[i].compareBottom(parentDoc);
if (c < 0) {
// Definitely not competitive.
// System.out.println(" skip");
return;
} else if (c > 0) {
// Definitely competitive.
break;
} else if (i == compEnd) {
// Here c=0. If we're at the last comparator, this doc is not
// competitive, since docs are visited in doc Id order, which means
// this doc cannot compete with any other document in the queue.
// System.out.println(" skip");
return;
}
}
// System.out.println(" competes! doc=" + (docBase + parentDoc));
// This hit is competitive - replace bottom element in queue & adjustTop
for (int i = 0; i < comparators.length; i++) {
comparators[i].copy(bottom.slot, parentDoc);
}
if (!trackMaxScore && trackScores) {
score = scorer.score();
}
bottom.doc = docBase + parentDoc;
bottom.readerContext = currentReaderContext;
bottom.score = score;
copyGroups(bottom);
bottom = queue.updateTop();
for (int i = 0; i < comparators.length; i++) {
comparators[i].setBottom(bottom.slot);
}
} else {
// Startup transient: queue is not yet full:
final int comparatorSlot = totalHitCount - 1;
// Copy hit into queue
for (int i = 0; i < comparators.length; i++) {
comparators[i].copy(comparatorSlot, parentDoc);
}
// System.out.println(" startup: new OG doc=" + (docBase+parentDoc));
if (!trackMaxScore && trackScores) {
score = scorer.score();
}
final OneGroup og =
new OneGroup(comparatorSlot, docBase + parentDoc, score, joinScorers.length, trackScores);
og.readerContext = currentReaderContext;
copyGroups(og);
bottom = queue.add(og);
queueFull = totalHitCount == numParentHits;
if (queueFull) {
// End of startup transient: queue just filled up:
for (int i = 0; i < comparators.length; i++) {
comparators[i].setBottom(bottom.slot);
}
}
}
}
/** not a direct test of NearSpans, but a demonstration of how/when this causes problems */
public void testSpanNearScorerSkipTo1() throws Exception {
SpanNearQuery q = makeQuery();
Weight w = q.weight(searcher);
Scorer s = w.scorer(searcher.getIndexReader(), true, false);
assertEquals(1, s.advance(1));
}
@Override
public void collect(int doc) throws IOException {
if (scorer.score() > minScore) {
count++;
}
}
@Override
public int docID() {
return subQueryScorer.docID();
}
@Override
public int nextDoc() throws IOException {
return scorer.nextDoc();
}
@Override
public int advance(int target) throws IOException {
return scorer.advance(target);
}
@Override
public int docID() {
return scorer.docID();
}
@Override
public float score() throws IOException {
return (_func.useInnerScore())
? _func.newScore(_innerScorer.score(), _innerScorer.docID())
: _func.newScore(_innerScorer.docID());
}
@Override
public int docID() {
return _innerScorer.docID();
}