org.limewire.collection
Class OrView

java.lang.Object
  org.limewire.collection.OrView

All Implemented Interfaces:

BitField

public class OrView
extends Object

Gives an Or view over one to many BitFields. OrView returns the Or value and next clear (equal to 0) and set (equal to 1) bit of the BitFields.

See Or for more information on the logical disjunction.

    void sampleCodeOrView(){
        BitSet bs1 = new BitSet();
        bs1.set(0);
        bs1.set(1);

        BitSet bs2 = new BitSet();
        bs2.set(0);
        bs2.set(2);

        BitField bf1 = new BitFieldSet(bs1, 5);
        BitField bf2 = new BitFieldSet(bs2, 5);

        printBitField(bf1, "bf1");
        printBitField(bf2, "bf2");

        OrView ov = new OrView(bf1, bf2);
        printBitField(ov, " ov");

    }

    void printBitField(BitField bf, String bfName){
        System.out.print(bfName + ": ");
        for(int i = 0; i < bf.maxSize(); i++){
            int j = 0;
            if(bf.get(i))
                j = 1;          
            System.out.print(j);
        }
        System.out.println(""); 
    }

    Output:
        bf1: 11000
        bf2: 10100
         ov: 11100
 

Field Summary

protected BitField[]

fields

Constructor Summary

OrView(BitField first, BitField... more)

Method Summary

int	cardinality()
boolean	get(int i)
int	maxSize()
int	nextClearBit(int startIndex)
int	nextSetBit(int startIndex)

Methods inherited from class java.lang.Object

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

Field Detail

fields

protected final BitField[] fields

Constructor Detail

OrView

public OrView(BitField first,
              BitField... more)

Method Detail

get

public boolean get(int i)

nextClearBit

public int nextClearBit(int startIndex)

nextSetBit

public int nextSetBit(int startIndex)

Returns:

index of next set bit from index i or -1 if there is no bit left

maxSize

public int maxSize()

Specified by:

maxSize in interface BitField

cardinality

public int cardinality()

Specified by:

cardinality in interface BitField