org.apache.lucene.search
public abstract class HitCollector extends Object
Version: $Id: HitCollector.java 155607 2005-02-27 01:29:53Z otis $
See Also: search
Method Summary | |
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abstract void | collect(int doc, float score) Called once for every non-zero scoring document, with the document number
and its score.
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If, for example, an application wished to collect all of the hits for a query in a BitSet, then it might:
Searcher searcher = new IndexSearcher(indexReader); final BitSet bits = new BitSet(indexReader.maxDoc()); searcher.search(query, new HitCollector() { public void collect(int doc, float score) { bits.set(doc); } });
Note: This is called in an inner search loop. For good search performance, implementations of this method should not call {@link Searcher#doc(int)} or {@link org.apache.lucene.index.IndexReader#document(int)} on every document number encountered. Doing so can slow searches by an order of magnitude or more.
Note: The score
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.