org.apache.jackrabbit.core.query.lucene.hits
Class AdaptingHits

java.lang.Object
  org.apache.jackrabbit.core.query.lucene.hits.AdaptingHits

All Implemented Interfaces:

Hits

public class AdaptingHits
extends Object
implements Hits

This is an implementation of Hits which starts with marking hits in an ArrayHits instance and switches to a BitSetHits instance if at least the threshold of 8kb for the ArrayHits is reached and a BitSetHits instance would consume less memory.

Constructor Summary

AdaptingHits()

AdaptingHits(int threshold)

Method Summary

int	next() Return the doc number of the next hit in the set.
void	set(int doc) Marks the document with doc number doc as a hit.
int	skipTo(int target) Skips to the first match beyond the current whose document number is greater than or equal to the given target.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AdaptingHits

public AdaptingHits()

AdaptingHits

public AdaptingHits(int threshold)

Method Detail

next

public int next()
         throws IOException

Return the doc number of the next hit in the set. Subsequent calls never return the same doc number.

Specified by:

next in interface Hits

Throws:

IOException

set

public void set(int doc)

Marks the document with doc number doc as a hit. Implementations may throw an exception if you call set() after next() or skipTo() has been called.

Specified by:

set in interface Hits

skipTo

public int skipTo(int target)
           throws IOException

Skips to the first match beyond the current whose document number is greater than or equal to the given target. Returns -1 if there is no matching document number greater than target.

Specified by:

skipTo in interface Hits

Throws:

IOException