oogp2p.chord
Class ChordLocation

java.lang.Object
  oogp2p.chord.ChordLocation

All Implemented Interfaces:

java.io.Serializable

public class ChordLocation

extends java.lang.Object

implements java.io.Serializable

ChordLocation. Adapted from Stuart Anderson's implementation of ChordLocation

See Also:

Serialized Form

Field Summary

private java.lang.String	IPAddr
private byte[]	key
private static java.security.MessageDigest	md
static int	NUM_HASH_BYTES
private int	port

Constructor Summary

	ChordLocation(byte[] bs)
(package private)	ChordLocation(java.lang.String IP, int p) This is the basic constructor - it calculates the key for a node.

Method Summary

java.lang.String	addr() This selector returns the IP address of the node.
static int	convbyte(byte b)
java.lang.String	displayIdAsBytes()
boolean	equals(ChordLocation l1) An equality test for locations.
static byte[]	getHash(java.lang.String item)
java.math.BigInteger	getIdAsBigInt()
byte[]	id() This selector returns the value of the SHA key for the node.
boolean	isBetween(ChordLocation left, ChordLocation right)
boolean	lessThan(ChordLocation l1) Compare the keys of two locations....are you less than l1?
int	portNo() This selector returns the port number of the location.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

IPAddr

private java.lang.String IPAddr

port

private int port

key

private byte[] key

NUM_HASH_BYTES

public static int NUM_HASH_BYTES

md

private static java.security.MessageDigest md

Constructor Detail

ChordLocation

ChordLocation(java.lang.String IP,
              int p)

This is the basic constructor - it calculates the key for a node.

ChordLocation

public ChordLocation(byte[] bs)

Parameters:

bs -

Method Detail

getHash

public static byte[] getHash(java.lang.String item)

id

public byte[] id()

This selector returns the value of the SHA key for the node.

addr

public java.lang.String addr()

This selector returns the IP address of the node.

portNo

public int portNo()

This selector returns the port number of the location.

convbyte

public static int convbyte(byte b)

Parameters:

b -

Returns:

converts byte b into an unsigned int

equals

public boolean equals(ChordLocation l1)

An equality test for locations.

displayIdAsBytes

public java.lang.String displayIdAsBytes()

lessThan

public boolean lessThan(ChordLocation l1)

Compare the keys of two locations....are you less than l1?

getIdAsBigInt

public java.math.BigInteger getIdAsBigInt()

isBetween

public boolean isBetween(ChordLocation left,
                         ChordLocation right)

Parameters:

left -

right -

Returns:

checks if l is between left and right (non-inclusive) with them being in a ring formation

toString

public java.lang.String toString()