org.tm4j.topicmap.utils
Class IDGeneratorImpl

java.lang.Object
  org.tm4j.topicmap.utils.IDGeneratorImpl

All Implemented Interfaces:

IDGenerator

public class IDGeneratorImpl

extends java.lang.Object

implements IDGenerator

The default IDGenerator implementation. This implementation returns a two-part, pseudo-unique ID. The first part of the ID is the time (in milliseconds) of the creation of the object, encoded as a base 30 string. The second part of the ID is a simple incrementing counter. This class does not generate truely unique IDs, but the degree of uniqueness should be sufficient for most applications.

Field Summary

protected java.lang.String	baseID
protected long	counter

Constructor Summary

IDGeneratorImpl()
Constructs a new IDGeneratorImpl object, with the base part of the ID string set to the time of creation.

Method Summary

java.lang.String

getID() Returns a pseudo-unique identifier as a concatenation of the base identifier created in the object constructor followed by a dash (-) and then a simple, incrementing counter value (encoded in hexadecimal).

Methods inherited from class java.lang.Object

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

Field Detail

baseID

protected java.lang.String baseID

counter

protected long counter

Constructor Detail

IDGeneratorImpl

public IDGeneratorImpl()

Constructs a new IDGeneratorImpl object, with the base part of the ID string set to the time of creation.

Method Detail

getID

public java.lang.String getID()

Returns a pseudo-unique identifier as a concatenation of the base identifier created in the object constructor followed by a dash (-) and then a simple, incrementing counter value (encoded in hexadecimal).

Specified by:

getID in interface IDGenerator