Package org.apache.lucene.util

Class CombinedBitSet

  • All Implemented Interfaces:
    org.apache.lucene.util.Accountable, org.apache.lucene.util.Bits
    public final class CombinedBitSet
extends org.apache.lucene.util.BitSet
implements org.apache.lucene.util.Bits
    A BitSet implementation that combines two instances of BitSet and Bits to provide a single merged view.

    • Nested Class Summary

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

        org.apache.lucene.util.Bits.MatchAllBits, org.apache.lucene.util.Bits.MatchNoBits

    • Field Summary

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

        EMPTY_ARRAY

    • Constructor Summary

      Constructors 
      Constructor Description
      CombinedBitSet​(org.apache.lucene.util.BitSet first, org.apache.lucene.util.Bits second)  

    • Method Summary

      Modifier and Type Method Description
      int approximateCardinality()  
      int cardinality()
      This implementation is slow and requires to iterate over all bits to compute the intersection.
      void clear​(int i)  
      void clear​(int startIndex, int endIndex)  
      boolean get​(int index)  
      org.apache.lucene.util.BitSet getFirst()  
      int length()  
      int nextSetBit​(int index)  
      int prevSetBit​(int index)  
      long ramBytesUsed()  
      void set​(int i)  

      • Methods inherited from class org.apache.lucene.util.BitSet

        checkUnpositioned, of, or

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface org.apache.lucene.util.Accountable

        getChildResources

    • Constructor Detail

      • CombinedBitSet

        public CombinedBitSet​(org.apache.lucene.util.BitSet first,
                      org.apache.lucene.util.Bits second)

    • Method Detail

      • getFirst

        public org.apache.lucene.util.BitSet getFirst()

      • cardinality

        public int cardinality()
        This implementation is slow and requires to iterate over all bits to compute the intersection. Use approximateCardinality() for a fast approximation.
        Specified by:
        cardinality in class org.apache.lucene.util.BitSet

      • approximateCardinality

        public int approximateCardinality()
        Overrides:
        approximateCardinality in class org.apache.lucene.util.BitSet

      • prevSetBit

        public int prevSetBit​(int index)
        Specified by:
        prevSetBit in class org.apache.lucene.util.BitSet

      • nextSetBit

        public int nextSetBit​(int index)
        Specified by:
        nextSetBit in class org.apache.lucene.util.BitSet

      • ramBytesUsed

        public long ramBytesUsed()
        Specified by:
        ramBytesUsed in interface org.apache.lucene.util.Accountable

      • get

        public boolean get​(int index)
        Specified by:
        get in interface org.apache.lucene.util.Bits

      • length

        public int length()
        Specified by:
        length in interface org.apache.lucene.util.Bits

      • set

        public void set​(int i)
        Specified by:
        set in class org.apache.lucene.util.BitSet

      • clear

        public void clear​(int i)
        Specified by:
        clear in class org.apache.lucene.util.BitSet

      • clear

        public void clear​(int startIndex,
                  int endIndex)
        Specified by:
        clear in class org.apache.lucene.util.BitSet