org.apache.turbine.services.uniqueid
Class TurbineUniqueIdService

java.lang.Object
  org.apache.turbine.services.BaseInitable
      org.apache.turbine.services.BaseService
          org.apache.turbine.services.TurbineBaseService
              org.apache.turbine.services.uniqueid.TurbineUniqueIdService

All Implemented Interfaces:

Initable, Service, UniqueIdService

public class TurbineUniqueIdService

extends TurbineBaseService

implements UniqueIdService

This is an implementation of UniqueIdService.

Version:

$Id: TurbineUniqueIdService.java 264148 2005-08-29 14:21:04Z henning $

Author:

Rafal Krzewski, Henning P. Schmiedehausen

Field Summary

protected static int	counter
protected static java.lang.String	turbineId The identifier of this instance of turbine.
protected static java.lang.String	turbineURL

Fields inherited from class org.apache.turbine.services.BaseService

configuration, name, serviceBroker

Fields inherited from class org.apache.turbine.services.BaseInitable

initableBroker, isInitialized

Fields inherited from interface org.apache.turbine.services.uniqueid.UniqueIdService

SERVICE_NAME

Constructor Summary

TurbineUniqueIdService()

Method Summary

java.lang.String	getInstanceId() Returns an identifier of this Turbine instance that is unique both on the server and worldwide.
java.lang.String	getPseudorandomId() Returns a unique identifier that looks like random data.
java.lang.String	getUniqueId() Returns an identifier that is unique within this turbine instance, but does not have random-like apearance.
void	init() Initializes the service upon first Turbine.doGet() invocation.
void	init(RunData data) Performs early initialization.
void	shutdown() Writes a message to the log upon system shutdown.

Methods inherited from class org.apache.turbine.services.TurbineBaseService

init, init

Methods inherited from class org.apache.turbine.services.BaseService

getConfiguration, getName, getProperties, getServiceBroker, setName, setServiceBroker

Methods inherited from class org.apache.turbine.services.BaseInitable

getInit, getInitableBroker, setInit, setInitableBroker

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.turbine.services.Service

getConfiguration, getName, getProperties, setName, setServiceBroker

Methods inherited from interface org.apache.turbine.services.Initable

getInit, init, setInitableBroker

Field Detail

turbineId

protected static java.lang.String turbineId

The identifier of this instance of turbine.

turbineURL

protected static java.lang.String turbineURL

counter

protected static int counter

Constructor Detail

TurbineUniqueIdService

public TurbineUniqueIdService()

Method Detail

init

public void init(RunData data)
          throws InitializationException

Deprecated. Use init() instead

Description copied from class: TurbineBaseService

Performs early initialization.

Overrides:

init in class TurbineBaseService

Parameters:

data - An RunData to use for initialization activities.

Throws:

InitializationException - if initialization of this class was not successful.

init

public void init()
          throws InitializationException

Initializes the service upon first Turbine.doGet() invocation.

Specified by:

init in interface Initable

Overrides:

init in class TurbineBaseService

Throws:

InitializationException

shutdown

public void shutdown()

Writes a message to the log upon system shutdown.

Specified by:

shutdown in interface Initable

Overrides:

shutdown in class TurbineBaseService

getInstanceId

public java.lang.String getInstanceId()

Returns an identifier of this Turbine instance that is unique both on the server and worldwide. This identifier is computed as an MD5 sum of the URL (including schema, address, port if different that 80/443 respecively, context and servlet name). There is an overwhelming probalility that this id will be different that all other Turbine instances online.

Specified by:

getInstanceId in interface UniqueIdService

Returns:

A String with the instance identifier.

getUniqueId

public java.lang.String getUniqueId()

Returns an identifier that is unique within this turbine instance, but does not have random-like apearance.

Specified by:

getUniqueId in interface UniqueIdService

Returns:

A String with the non-random looking instance identifier.

getPseudorandomId

public java.lang.String getPseudorandomId()

Returns a unique identifier that looks like random data.

Specified by:

getPseudorandomId in interface UniqueIdService

Returns:

A String with the random looking instance identifier.