Package org.goplanit.utils.id

Class IdGroupingToken

java.lang.Object

org.goplanit.utils.id.IdGroupingToken

public final class IdGroupingToken
extends Object

Class used as token to group ids, i.e., ids for a class generated with this token will be unique within this group. This allows you to have different groups of ids that are unique within each group but not between groups. An example of when this is useful is if you have multiple instances of container classes (maps, sets) that hold objects that should have unique, continguous ids within this container but NOT across containers, i.e., if a new instances is added to another container it should not lead to a gap in the ids in the other container. We use the UUID library to generate the token.

Author:

markr

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	IdGroupingToken(String description)	Constructor

Method Summary

Modifier and Type	Method	Description
static IdGroupingToken	collectGlobalToken()	We have one default global token available for ids that are globally managed rather than within some container.
boolean	equals(Object obj)
int	hashCode()
String	toString()	collect the string token

Methods inherited from class java.lang.Object

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

Constructor Detail

IdGroupingToken

protected IdGroupingToken(String description)

Constructor

Parameters:

description - of the grouping id, when null empty string is used

Method Detail

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

collect the string token

Overrides:

toString in class Object

collectGlobalToken

public static IdGroupingToken collectGlobalToken()

We have one default global token available for ids that are globally managed rather than within some container. In that case use the global token

Returns:

the global id token