com.jalios.jstore
Class Stamp

java.lang.Object
  com.jalios.jstore.Stamp

All Implemented Interfaces:

Comparable<Stamp>

public class Stamp
extends Object
implements Comparable<Stamp>

This class represents a stamp. A stamp contains two parts:
- a replica identifier (URID)
- a time value

Version:

$Revision: 21412 $

Author:

Olivier Dedieu

Field Summary

static String	REVISION
static String	STAMP_SEPARATOR

Constructor Summary

Stamp(String str)
Create a new stamp from a string having the following format: urid[STAMP_SEPARATOR]time

Stamp(String urid, long time)
Create a new stamp from an URID and a logical time

Method Summary

int	compareTo(Stamp stamp) Compares this stamp with the specified stamp for order.
boolean	equals(Object obj)
long	getTime() Get the value of time.
String	getUrid() Get the value of urid.
static Stamp	max(Stamp s1, Stamp s2) Return the greater of two stamps
static Stamp	min(Stamp s1, Stamp s2) Return the smaller of two stamps
void	setTime(long time) Set the value of time.
void	setUrid(String urid) Set the value of urid.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

REVISION

public static final String REVISION

See Also:

Constant Field Values

STAMP_SEPARATOR

public static final String STAMP_SEPARATOR

See Also:

Constant Field Values

Constructor Detail

Stamp

public Stamp(String urid,
             long time)

Create a new stamp from an URID and a logical time

Stamp

public Stamp(String str)

Create a new stamp from a string having the following format: urid[STAMP_SEPARATOR]time

Method Detail

getUrid

public String getUrid()

Get the value of urid.

Returns:

Value of urid.

setUrid

public void setUrid(String urid)

Set the value of urid.

Parameters:

urid - Value to assign to urid.

getTime

public long getTime()

Get the value of time.

Returns:

Value of time.

setTime

public void setTime(long time)

Set the value of time.

Parameters:

time - Value to assign to time.

compareTo

public int compareTo(Stamp stamp)

Compares this stamp with the specified stamp for order. Returns a negative integer, zero, or a positive integer as this stamp is less than, equal to, or greater than the specified stamp. The time stamps are first compared. If they are equals, the urids are compared.

Specified by:

compareTo in interface Comparable<Stamp>

Parameters:

stamp - the Stamp to be compared.

Returns:

a negative integer, zero, or a positive integer as this stamp is less than, equal to, or greater than the specified stamp.

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

min

public static Stamp min(Stamp s1,
                        Stamp s2)

Return the smaller of two stamps

Parameters:

s1 - a stamp

s2 - a stamp

Returns:

the smaller of s1 and s2

max

public static Stamp max(Stamp s1,
                        Stamp s2)

Return the greater of two stamps

Parameters:

s1 - a stamp

s2 - a stamp

Returns:

the greater of s1 and s2