// firstDocID is ignored since nextDoc() sets 'doc'
public /*protected internal*/ override bool Score(Collector c, int end, int firstDocID)
{
c.SetScorer(this);
while (doc < end)
{
// for docs in window
c.Collect(doc); // collect score
if (++pointer >= pointerMax)
{
pointerMax = termDocs.Read(docs, freqs); // refill buffers
if (pointerMax != 0)
{
pointer = 0;
}
else
{
termDocs.Close(); // close stream
doc = System.Int32.MaxValue; // set to sentinel value
return false;
}
}
doc = docs[pointer];
}
return true;
}
/// <summary>Lower-level search API.
///
/// <p/><see cref="Collector.Collect(int)" /> is called for every matching document.
///
/// <p/>Applications should only use this if they need <i>all</i> of the matching
/// documents. The high-level search API (<see cref="Searcher.Search(Query, int)" />
/// ) is usually more efficient, as it skips non-high-scoring hits.
/// <p/>Note: The <c>score</c> passed to this method is a raw score.
/// In other words, the score will not necessarily be a float whose value is
/// between 0 and 1.
/// </summary>
/// <throws> BooleanQuery.TooManyClauses </throws>
public virtual void Search(Query query, Collector results)
{
Search(CreateWeight(query), null, results);
}
public abstract void Search(Weight weight, Filter filter, Collector results);
/// <summary> Create a TimeLimitedCollector wrapper over another <see cref="Collector" /> with a specified timeout.</summary>
/// <param name="collector">the wrapped <see cref="Collector" />
/// </param>
/// <param name="timeAllowed">max time allowed for collecting hits after which <see cref="TimeExceededException" /> is thrown
/// </param>
public TimeLimitingCollector(Collector collector, long timeAllowed)
{
InitBlock();
this.collector = collector;
t0 = TIMER_THREAD.Milliseconds;
this.timeout = t0 + timeAllowed;
}
public override void Search(Weight weight, Filter filter, Collector results)
{
throw new System.NotSupportedException();
}
public override void Score(Collector collector)
{
Score(collector, System.Int32.MaxValue, NextDoc());
}
public PositiveScoresOnlyCollector(Collector c)
{
this.c = c;
}
/// <summary>Lower-level search API.
///
/// <p/><see cref="Collector.Collect(int)" /> is called for every matching document.
///
/// <p/>Applications should only use this if they need <i>all</i> of the matching
/// documents. The high-level search API (<see cref="Searcher.Search(Query, int)" />
/// ) is usually more efficient, as it skips non-high-scoring hits.
/// <p/>Note: The <c>score</c> passed to this method is a raw score.
/// In other words, the score will not necessarily be a float whose value is
/// between 0 and 1.
/// </summary>
/// <throws> BooleanQuery.TooManyClauses </throws>
public virtual void Search(Query query, Collector results)
{
Search(CreateWeight(query), null, results);
}
/// <summary>Lower-level search API.
///
/// <p/><see cref="Collector.Collect(int)" /> is called for every matching
/// document.
/// <br/>Collector-based access to remote indexes is discouraged.
///
/// <p/>Applications should only use this if they need <i>all</i> of the
/// matching documents. The high-level search API (<see cref="Searcher.Search(Query, Filter, int)" />)
/// is usually more efficient, as it skips
/// non-high-scoring hits.
///
/// </summary>
/// <param name="query">to match documents
/// </param>
/// <param name="filter">if non-null, used to permit documents to be collected.
/// </param>
/// <param name="results">to receive hits
/// </param>
/// <throws> BooleanQuery.TooManyClauses </throws>
public virtual void Search(Query query, Filter filter, Collector results)
{
Search(CreateWeight(query), filter, results);
}
private void SearchWithFilter(IndexReader reader, Weight weight, Filter filter, Collector collector)
{
System.Diagnostics.Debug.Assert(filter != null);
Scorer scorer = weight.Scorer(reader, true, false);
if (scorer == null)
{
return ;
}
int docID = scorer.DocID();
System.Diagnostics.Debug.Assert(docID == - 1 || docID == DocIdSetIterator.NO_MORE_DOCS);
// CHECKME: use ConjunctionScorer here?
DocIdSet filterDocIdSet = filter.GetDocIdSet(reader);
if (filterDocIdSet == null)
{
// this means the filter does not accept any documents.
return ;
}
DocIdSetIterator filterIter = filterDocIdSet.Iterator();
if (filterIter == null)
{
// this means the filter does not accept any documents.
return ;
}
int filterDoc = filterIter.NextDoc();
int scorerDoc = scorer.Advance(filterDoc);
collector.SetScorer(scorer);
while (true)
{
if (scorerDoc == filterDoc)
{
// Check if scorer has exhausted, only before collecting.
if (scorerDoc == DocIdSetIterator.NO_MORE_DOCS)
{
break;
}
collector.Collect(scorerDoc);
filterDoc = filterIter.NextDoc();
scorerDoc = scorer.Advance(filterDoc);
}
else if (scorerDoc > filterDoc)
{
filterDoc = filterIter.Advance(scorerDoc);
}
else
{
scorerDoc = scorer.Advance(filterDoc);
}
}
}
public abstract void Search(Weight weight, Filter filter, Collector results);
public override void Search(Weight weight, Filter filter, Collector collector)
{
if (filter == null)
{
for (int i = 0; i < subReaders.Length; i++)
{
// search each subreader
collector.SetNextReader(subReaders[i], docStarts[i]);
Scorer scorer = weight.Scorer(subReaders[i], !collector.AcceptsDocsOutOfOrder, true);
if (scorer != null)
{
scorer.Score(collector);
}
}
}
else
{
for (int i = 0; i < subReaders.Length; i++)
{
// search each subreader
collector.SetNextReader(subReaders[i], docStarts[i]);
SearchWithFilter(subReaders[i], weight, filter, collector);
}
}
}
/// <summary>Expert: Collects matching documents in a range. Hook for optimization.
/// Note that <see cref="NextDoc()" /> must be called once before this method is called
/// for the first time.
/// </summary>
/// <param name="collector">The collector to which all matching documents are passed through.
/// </param>
/// <param name="max">Do not score documents past this.
/// </param>
/// <param name="firstDocID"></param>
/// <returns> true if more matching documents may remain.
/// </returns>
public /*protected internal*/ override bool Score(Collector collector, int max, int firstDocID)
{
// firstDocID is ignored since nextDoc() sets 'currentDoc'
collector.SetScorer(this);
while (currentDoc < max)
{
collector.Collect(currentDoc);
if (NextDoc() == NO_MORE_DOCS)
{
return false;
}
}
return true;
}
/// <summary>Scores and collects all matching documents.</summary>
/// <param name="collector">The collector to which all matching documents are passed through.</param>
public override void Score(Collector collector)
{
collector.SetScorer(this);
while (NextDoc() != NO_MORE_DOCS)
{
collector.Collect(currentDoc);
}
}
/// <summary>Lower-level search API.
///
/// <p/><see cref="Collector.Collect(int)" /> is called for every matching
/// document.
/// <br/>Collector-based access to remote indexes is discouraged.
///
/// <p/>Applications should only use this if they need <i>all</i> of the
/// matching documents. The high-level search API (<see cref="Searcher.Search(Query, Filter, int)" />)
/// is usually more efficient, as it skips
/// non-high-scoring hits.
///
/// </summary>
/// <param name="query">to match documents
/// </param>
/// <param name="filter">if non-null, used to permit documents to be collected.
/// </param>
/// <param name="results">to receive hits
/// </param>
/// <throws> BooleanQuery.TooManyClauses </throws>
public virtual void Search(Query query, Filter filter, Collector results)
{
Search(CreateWeight(query), filter, results);
}
public SubScorer(Scorer scorer, bool required, bool prohibited, Collector collector, SubScorer next)
{
this.scorer = scorer;
this.required = required;
this.prohibited = prohibited;
this.collector = collector;
this.next = next;
}
public PositiveScoresOnlyCollector(Collector c)
{
this.c = c;
}
// firstDocID is ignored since nextDoc() initializes 'current'
public /*protected internal*/ override bool Score(Collector collector, int max, int firstDocID)
{
bool more;
Bucket tmp;
BucketScorer bs = new BucketScorer();
// The internal loop will set the score and doc before calling collect.
collector.SetScorer(bs);
do
{
bucketTable.first = null;
while (current != null)
{
// more queued
// check prohibited & required
if ((current.bits & prohibitedMask) == 0 && (current.bits & requiredMask) == requiredMask)
{
if (current.doc >= max)
{
tmp = current;
current = current.next;
tmp.next = bucketTable.first;
bucketTable.first = tmp;
continue;
}
if (current.coord >= minNrShouldMatch)
{
bs.score = current.score * coordFactors[current.coord];
bs.doc = current.doc;
collector.Collect(current.doc);
}
}
current = current.next; // pop the queue
}
if (bucketTable.first != null)
{
current = bucketTable.first;
bucketTable.first = current.next;
return true;
}
// refill the queue
more = false;
end += BucketTable.SIZE;
for (SubScorer sub = scorers; sub != null; sub = sub.next)
{
int subScorerDocID = sub.scorer.DocID();
if (subScorerDocID != NO_MORE_DOCS)
{
more |= sub.scorer.Score(sub.collector, end, subScorerDocID);
}
}
current = bucketTable.first;
}
while (current != null || more);
return false;
}
/// <summary>Lower-level search API.
///
/// <p/><see cref="Collector.Collect(int)" /> is called for every matching document.
///
/// <p/>Applications should only use this if they need <i>all</i> of the
/// matching documents. The high-level search API (<see cref="Searcher.Search(Query, int)" />)
/// is usually more efficient, as it skips
/// non-high-scoring hits.
/// <p/>This method cannot be parallelized, because <see cref="Collector"/>
/// supports no concurrent access.
/// </summary>
/// <param name="weight">to match documents
/// </param>
/// <param name="filter">if non-null, a bitset used to eliminate some documents
/// </param>
/// <param name="collector">to receive hits
///
/// TODO: parallelize this one too
/// </param>
public override void Search(Weight weight, Filter filter, Collector collector)
{
for (int i = 0; i < searchables.Length; i++)
{
int start = starts[i];
Collector hc = new AnonymousClassCollector1(collector, start, this);
searchables[i].Search(weight, filter, hc);
}
}
public override void Search(Weight weight, Filter filter, Collector results)
{
throw new System.NotSupportedException();
}