org.apache.lucene.util
Class OpenBitSetDISI

java.lang.Object
  org.apache.lucene.search.DocIdSet
      org.apache.lucene.util.OpenBitSet
          org.apache.lucene.util.OpenBitSetDISI

All Implemented Interfaces:

Serializable, Cloneable, Bits

public class OpenBitSetDISI
extends OpenBitSet

OpenBitSet with added methods to bulk-update the bits from a DocIdSetIterator.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.lucene.util.Bits

Bits.MatchAllBits, Bits.MatchNoBits

Field Summary

Fields inherited from class org.apache.lucene.util.OpenBitSet

bits, wlen

Fields inherited from class org.apache.lucene.search.DocIdSet

EMPTY_DOCIDSET

Fields inherited from interface org.apache.lucene.util.Bits

EMPTY_ARRAY

Constructor Summary

OpenBitSetDISI(DocIdSetIterator disi, int maxSize)
Construct an OpenBitSetDISI with its bits set from the doc ids of the given DocIdSetIterator.

OpenBitSetDISI(int maxSize)
Construct an OpenBitSetDISI with no bits set, and a given maximum size one larger than the largest doc id for which a bit may ever be set on this OpenBitSetDISI.

Method Summary

void	inPlaceAnd(DocIdSetIterator disi) Perform an inplace AND with the doc ids from a given DocIdSetIterator, leaving only the bits set for which the doc ids are in common.
void	inPlaceNot(DocIdSetIterator disi) Perform an inplace NOT with the doc ids from a given DocIdSetIterator, clearing all the bits for each such doc id.
void	inPlaceOr(DocIdSetIterator disi) Perform an inplace OR with the doc ids from a given DocIdSetIterator, setting the bit for each such doc id.
void	inPlaceXor(DocIdSetIterator disi) Perform an inplace XOR with the doc ids from a given DocIdSetIterator, flipping all the bits for each such doc id.

Methods inherited from class org.apache.lucene.util.OpenBitSet

and, andNot, andNotCount, bits2words, capacity, cardinality, clear, clear, clear, clone, ensureCapacity, ensureCapacityWords, equals, expandingWordNum, fastClear, fastClear, fastFlip, fastFlip, fastGet, fastGet, fastSet, fastSet, flip, flip, flipAndGet, flipAndGet, get, get, getAndSet, getAndSet, getBit, getBits, getNumWords, hashCode, intersect, intersectionCount, intersects, isCacheable, isEmpty, iterator, length, nextSetBit, nextSetBit, or, prevSetBit, prevSetBit, remove, set, set, setBits, setNumWords, size, trimTrailingZeros, union, unionCount, xor, xorCount

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OpenBitSetDISI

public OpenBitSetDISI(DocIdSetIterator disi,
                      int maxSize)
               throws IOException

Construct an OpenBitSetDISI with its bits set from the doc ids of the given DocIdSetIterator. Also give a maximum size one larger than the largest doc id for which a bit may ever be set on this OpenBitSetDISI.

Throws:

IOException

OpenBitSetDISI

public OpenBitSetDISI(int maxSize)

Construct an OpenBitSetDISI with no bits set, and a given maximum size one larger than the largest doc id for which a bit may ever be set on this OpenBitSetDISI.

Method Detail

inPlaceOr

public void inPlaceOr(DocIdSetIterator disi)
               throws IOException

Perform an inplace OR with the doc ids from a given DocIdSetIterator, setting the bit for each such doc id. These doc ids should be smaller than the maximum size passed to the constructor.

Throws:

IOException

inPlaceAnd

public void inPlaceAnd(DocIdSetIterator disi)
                throws IOException

Perform an inplace AND with the doc ids from a given DocIdSetIterator, leaving only the bits set for which the doc ids are in common. These doc ids should be smaller than the maximum size passed to the constructor.

Throws:

IOException

inPlaceNot

public void inPlaceNot(DocIdSetIterator disi)
                throws IOException

Perform an inplace NOT with the doc ids from a given DocIdSetIterator, clearing all the bits for each such doc id. These doc ids should be smaller than the maximum size passed to the constructor.

Throws:

IOException

inPlaceXor

public void inPlaceXor(DocIdSetIterator disi)
                throws IOException

Perform an inplace XOR with the doc ids from a given DocIdSetIterator, flipping all the bits for each such doc id. These doc ids should be smaller than the maximum size passed to the constructor.

Throws:

IOException