|Constructor and Description|
|Modifier and Type||Method and Description|
Called once for every document matching a query, with the unbased document number.
Called before collecting from each IndexReader.
Called before successive calls to
public void setScorer(Scorer scorer) throws IOException
Collector.collect(int). Implementations that need the score of the current document (passed-in to
Collector.collect(int)), should save the passed-in Scorer and call scorer.score() when needed.
public void collect(int doc)
Note: This is called in an inner search loop. For good search performance,
implementations of this method should not call
IndexReader.document(int) on every hit.
Doing so can slow searches by an order of magnitude or more.
public void setNextReader(IndexReader reader, int docBase)
Collector.collect(int)will correspond to reader. Add docBase to the current IndexReaders internal document id to re-base ids in
reader- next IndexReader
public boolean acceptsDocsOutOfOrder()
trueif this collector does not require the matching docIDs to be delivered in int sort order (smallest to largest) to
Most Lucene Query implementations will visit
matching docIDs in order. However, some queries
(currently limited to certain cases of
BooleanQuery) can achieve faster searching if the
Collector allows them to deliver the
docIDs out of order.
Many collectors don't mind getting docIDs out of
order, so it's important to return