Package 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:

$Id$

Author:

Rafal Krzewski, Henning P. Schmiedehausen

Field Summary

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.Service

SERVICE_NAME

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

SERVICE_NAME

Constructor Summary

Constructors

Constructor	Description
TurbineUniqueIdService()

Method Summary

Modifier and Type	Method	Description
String	getInstanceId()	Returns an identifier of this Turbine instance that is unique both on the server and worldwide.
String	getPseudorandomId()	Returns a unique identifier that looks like random data.
String	getUniqueId()	Returns an identifier that is unique within this turbine instance, but does not have random-like appearance.
void	init()	Initializes the service upon first Turbine.doGet() invocation.
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.Initable

getInit, init, setInitableBroker

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

getConfiguration, getName, getProperties, setName, setServiceBroker

Constructor Detail

TurbineUniqueIdService

public TurbineUniqueIdService()

Method Detail

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 - if initialization of this class was not successful.

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 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 respectively, context and servlet name). There is an overwhelming probability 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 String getUniqueId()

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

Specified by:

getUniqueId in interface UniqueIdService

Returns:

A String with the non-random looking instance identifier.

getPseudorandomId

public 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.