Package org.apache.lucene.search

Class BitsFilteredDocIdSet

java.lang.Object

org.apache.lucene.search.DocIdSet

org.apache.lucene.search.FilteredDocIdSet

org.apache.lucene.search.BitsFilteredDocIdSet

public final class BitsFilteredDocIdSet
extends FilteredDocIdSet

This implementation supplies a filtered DocIdSet, that excludes all docids which are not in a Bits instance. This is especially useful in Filter to apply the acceptDocs passed to getDocIdSet() before returning the final DocIdSet.

See Also:

DocIdSet, Filter

Constructor Summary

Constructors

Constructor	Description
BitsFilteredDocIdSet(DocIdSet innerSet, Bits acceptDocs)	Constructor.

Method Summary

Modifier and Type	Method	Description
static DocIdSet	wrap(DocIdSet set, Bits acceptDocs)	Convenience wrapper method: If acceptDocs == null it returns the original set without wrapping.

Methods inherited from class org.apache.lucene.search.FilteredDocIdSet

bits, isCacheable, iterator

Methods inherited from class java.lang.Object

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

Constructor Detail

BitsFilteredDocIdSet

public BitsFilteredDocIdSet(DocIdSet innerSet,
                            Bits acceptDocs)

Constructor.

Parameters:

innerSet - Underlying DocIdSet

acceptDocs - Allowed docs, all docids not in this set will not be returned by this DocIdSet

Method Detail

wrap

public static DocIdSet wrap(DocIdSet set,
                            Bits acceptDocs)

Convenience wrapper method: If acceptDocs == null it returns the original set without wrapping.

Parameters:

set - Underlying DocIdSet. If null, this method returns null

acceptDocs - Allowed docs, all docids not in this set will not be returned by this DocIdSet. If null, this method returns the original set without wrapping.