Application-Managed Persistence - No Persistence Provider for EntityManager

Is it possible to use Application-Managed Persistence in conjuction with

Container-Managed persistence? I am having issues gettting

application-managed persistence to work within a J2EE environment using

Sun Application Server 9.0 w/ Toplink persistence provider.

Here is the design that I have to use:

I have a lot of EJBs that use the same persistence unit that I have setup in

my persistence.xml (I will include it below) and they work fine. However, I

would like to use an entity class that will not be used within EJBs sessions

(instead within POJOs)... my understanding is that the POJO I would like to

use to manage this particular entity class cannot use the injected

container-managed persistence that I used in my EJBs. I checked out the

EJB Perstistence Specs (pg.116) to come up with retrieving the

EntityManager in this way for J2SE applications, however, I get an error

message.

EntityManagerFactory emf = javax.persistence.Persistence.createEntityManagerFactory("MyPU");

EntityManager em = emf.createEntityManager();

My Error: (from ExceptionObj.getMessage)

===========================================================

ERROR: No Persistence providerfor EntityManager named MyPU

persistence.xml

(the class my.package.MyClass is the one to be managed within a POJO)

===========================================================

<?xml version="1.0" encoding="UTF-8"?>

<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">

<persistence-unit name="MyPU" transaction-type="JTA">

<jta-data-source>jdbc/ptp</jta-data-source>

<class>my.package.EJBClass</class>

<class>my.package.MyClass</class>

<exclude-unlisted-classes>true</exclude-unlisted-classes>

<properties/>

</persistence-unit>

</persistence>

I know there is a "provider" tag for the persistence.xml file... I have tried:

<provider>oracle.toplink.essentials.PersistenceProvider</provider>

and

<provider>oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider</provider>

both of these are listed in toplink-essentials.jar, file:

META-INF/services/javax.persistence.spi.PersistenceProvider

Any help would be appreciated!

EJB 3.0 Persistence Specs

==========================================================

(file: ejb-3_0-fr-spec-persistence.pdf) at URL: http://jcp.org/aboutJava/communityprocess/final/jsr220/index.html

[3103 byte] By [kjsempirea] at [2007-10-3 3:29:14]