net.walend.lyophil.ejb
Class EJBIdentifierSource

java.lang.Object
  |
  +--net.walend.lyophil.ejb.EJBIdentifierSource

All Implemented Interfaces:

IdentifierSource

public class EJBIdentifierSource

extends java.lang.Object

implements IdentifierSource

Since:

20010801

Author:

David Walend

Field Summary

Fields inherited from interface net.walend.lyophil.IdentifierSource

ROLE

Constructor Summary

EJBIdentifierSource()

Method Summary

boolean	checkSetUp() make sure the backing storage is set up correctly
java.io.Serializable	createID() Return a new identifier Object.
private IdentifierSourceEJB	getIDSource()
java.io.Serializable	peekNextID() Returns the next id to be created, without assigning it as in use.
void	setUp() set up the backing storage
void	tearDown() clean up the backing storage

Methods inherited from class java.lang.Object

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

Constructor Detail

EJBIdentifierSource

public EJBIdentifierSource()

Method Detail

getIDSource

private IdentifierSourceEJB getIDSource()

createID

public java.io.Serializable createID()

Return a new identifier Object. The Object should be immutable and unique inside the system. Longs or RMI identifiers are a good choice. Your implementation should periodically log information about how quickly it's using up unique identifiers.

Specified by:

createID in interface IdentifierSource

Throws:

an - IdentifierUnavailableException if the IdentifierSource can't get a new unique Object.

a - LastIdentifierUsedException if the IdentifierSource is completely out of unique Objects.

peekNextID

public java.io.Serializable peekNextID()

Returns the next id to be created, without assigning it as in use. I use this method for testing.

Specified by:

peekNextID in interface IdentifierSource

checkSetUp

public boolean checkSetUp()

make sure the backing storage is set up correctly

Specified by:

checkSetUp in interface IdentifierSource

Throws:

<{PersistenceFailureException}>

setUp

public void setUp()

set up the backing storage

Specified by:

setUp in interface IdentifierSource

Throws:

<{PersistenceFailureException}>

tearDown

public void tearDown()

clean up the backing storage

Specified by:

tearDown in interface IdentifierSource

Throws:

<{PersistenceFailureException}>