io.nadron.service.impl

Class SimpleUniqueIdGenerator

java.lang.Object

io.nadron.service.impl.SimpleUniqueIdGenerator

All Implemented Interfaces:

UniqueIDGeneratorService

public class SimpleUniqueIdGenerator
extends Object
implements UniqueIDGeneratorService

Uses an atomic long to increment and provide a unique id. This will not work in case of clustered servers.

Author:

Abraham.Menacherry

Field Summary

Fields

Modifier and Type	Field and Description
static AtomicLong	ID

Constructor Summary

Constructors

Constructor and Description
SimpleUniqueIdGenerator()

Method Summary

Methods

Modifier and Type	Method and Description
Object	generate() Returns a unique id across the network, including those generated by UniqueIDGeneratorService.generateFor(Class) method.
Object	generateFor(Class klass) Returns a unique id across the network, including those generated by UniqueIDGeneratorService.generate() method.

Methods inherited from class java.lang.Object

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

Field Detail

ID

public static final AtomicLong ID

Constructor Detail

SimpleUniqueIdGenerator

public SimpleUniqueIdGenerator()

Method Detail

generate

public Object generate()

Description copied from interface: UniqueIDGeneratorService

Returns a unique id across the network, including those generated by UniqueIDGeneratorService.generateFor(Class) method. For e.g. if generateFor has already generated id "1", this method will not return "1" anymore. For a single JVM server, this method would just send back an Atomically incremented counter.

Specified by:

generate in interface UniqueIDGeneratorService

Returns:

A unique id.

generateFor

public Object generateFor(Class klass)

Description copied from interface: UniqueIDGeneratorService

Returns a unique id across the network, including those generated by UniqueIDGeneratorService.generate() method. For e.g. if generate has already generated id "1", this method will not return "1" anymore. For a single JVM server, this method would just send back an Atomically incremented counter.

Specified by:

generateFor in interface UniqueIDGeneratorService

Parameters:

klass - The class for which this method is being generated. The generator implementation can then probably put in a suffix of identification for generated id's.

Returns:

A unique id.