Examples of java.util.BitSet.clone()

java.util.BitSet.clone()
Cloning this BitSet produces a new BitSet that is equal to it. The clone of the bit set is another bit set that has exactly the same bits set to true as this bit set.
Overrides the clone method of Object. @return a clone of this bit set. @see java.util.BitSet#size()

    h = harness;
    BitSet b1, b2, b3, b4, b5;


    h.checkPoint("Clone/Equals");
    b1 = new BitSet();
    b2 = (BitSet)b1.clone();
    h.check( trulyEquals(b1,b2) );
    b1 = new BitSet(100);
    h.check( trulyEquals(b1,b2) );
    b1.set(5);
    h.check( !trulyEquals(b1,b2) );

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    h.check( trulyEquals(b1,b2) );
    b1 = new BitSet(100);
    h.check( trulyEquals(b1,b2) );
    b1.set(5);
    h.check( !trulyEquals(b1,b2) );
    b2 = (BitSet)b1.clone();
    h.check( trulyEquals(b1,b2));
    h.check(!b2.equals(null));


    h.checkPoint("NegativeSize");
    try {

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    BitSet result = done_.get(state);
    if (result == null) {
      return new BitSet();
    }
    else {
      return (BitSet) result.clone();
    }
  }


  /** Resets all the done and todo information.
   *  Immediately after calling this, isDone and isTodo will return false

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        } catch (CloneNotSupportedException e) {
            throw new AssertionError(e); // Should never happen, since we are cloneable.
        }
        final BitSet s = supplementary;
        if (s != null) {
            clone.supplementary = (BitSet) s.clone();
        }
        return clone;
    }
}

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        return new DocIdBitSet(rnd);
      }
    });
    bq.add(q, BooleanClause.Occur.MUST);
    if (validate) {
      if (result==null) result = (BitSet)rnd.clone();
      else result.and(rnd);
    }
    return result;
  }

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        if ((sm.getPCState() == PCState.PDIRTY
            && (!sm.isFlushed() || sm.isFlushedDirty()))
            || (sm.getPCState() == PCState.PNEW && sm.isFlushedDirty())) {
            BitSet dirty = sm.getDirty();
            if (sm.isFlushed()) {
                dirty = (BitSet) dirty.clone();
                dirty.andNot(sm.getFlushed());
            }
            if (dirty.length() > 0)
                return dirty;
        }

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    //SHOULD filters
    if (shouldFilters!=null)
    {
      returnBits = ((Filter)shouldFilters.get(0)).bits(reader);
//      avoid changing the original bitset - it may be cached
      returnBits=(BitSet) returnBits.clone(); 
      if (shouldFilters.size() > 1)
      {
        for (int i = 1; i < shouldFilters.size(); i++)
        {
          returnBits.or(((Filter)shouldFilters.get(i)).bits(reader));

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      for (int i = 0; i < notFilters.size(); i++)
      {
        BitSet notBits=((Filter)notFilters.get(i)).bits(reader);
        if(returnBits==null)
        {
          returnBits=(BitSet) notBits.clone();          
          returnBits.flip(0,reader.maxDoc());
        }
        else
        {
          returnBits.andNot(notBits);

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          }
          else
          {
            //don't mangle the bitset
            returnBits=(BitSet) mustBits.clone();            
          }
        }
        else
        {
          returnBits.and(mustBits);

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  BitSet addClause(BooleanQuery bq, BitSet result) {
    BitSet rnd = sets[r.nextInt(sets.length)];
    Query q = new ConstantScoreQuery(new BitSetFilter(rnd));
    bq.add(q, BooleanClause.Occur.MUST);
    if (validate) {
      if (result==null) result = (BitSet)rnd.clone();
      else result.and(rnd);
    }
    return result;
  }

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