org.apache.activemq.util

Class BitArray

java.lang.Object

org.apache.activemq.util.BitArray

All Implemented Interfaces:

java.io.Serializable

public class BitArray
extends java.lang.Object
implements java.io.Serializable

Simple BitArray to enable setting multiple boolean values efficently Used instead of BitSet because BitSet does not allow for efficent serialization. Will store up to 64 boolean values

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BitArray()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	get(int index)
long	getBits()
int	length()
void	readFromStream(java.io.DataInput dataIn) read the bits from an input stream
void	reset() reset all the bit values to false
void	reset(long bits) reset all the bits to the value supplied
boolean	set(int index, boolean flag) set the boolean value at the index
void	writeToStream(java.io.DataOutput dataOut) write the bits to an output stream

Methods inherited from class java.lang.Object

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

Constructor Detail

BitArray

public BitArray()

Method Detail

length

public int length()

Returns:

the length of bits set

getBits

public long getBits()

Returns:

the long containing the bits

set

public boolean set(int index,
          boolean flag)

set the boolean value at the index

Parameters:

index -

flag -

Returns:

the old value held at this index

get

public boolean get(int index)

Parameters:

index -

Returns:

the boolean value at this index

reset

public void reset()

reset all the bit values to false

reset

public void reset(long bits)

reset all the bits to the value supplied

Parameters:

bits -

writeToStream

public void writeToStream(java.io.DataOutput dataOut)
                   throws java.io.IOException

write the bits to an output stream

Parameters:

dataOut -

Throws:

java.io.IOException

readFromStream

public void readFromStream(java.io.DataInput dataIn)
                    throws java.io.IOException

read the bits from an input stream

Parameters:

dataIn -

Throws:

java.io.IOException