javax.persistence.PersistenceException

Hi

I am trying to get a basic EclipseRCP project working with Objectdb. At the very first line in creating a View

public void createPartControl(Composite parent) {

    EntityManagerFactory emf =
         Persistence.createEntityManagerFactory("$objectdb/db/pilots.odb");

I get the following:

"javax.persistence.PersistenceException: No Persistence provider for EntityManager named pilots.odb
at javax.persistence.Persistence.createEntityManagerFactory(Unknown Source)....."

 I have wrapped the objectdb.jar in a plugin and added tat as a dependency to the project. Not sure what else I should do.

Any help would be appreciated.

cmahony

This might be a class loader issue.

Could you please upload your sample project / projects?

You may also look at:

http://sourceforge.net/apps/mediawiki/iauthor/index.php

it seems as a very early release of the project but it might serve as an example.

The project is attached. Included is the plugin wrapped objectDb runtime.

It seems that currently ObjectDB has to be embedded in the plugin and trying to use it as a separate bundle fails.

See also this issue that might be related.

Anyway, your application works after:

• Removing dependency on the com.objectdb.objectdb plugin.
• Adding objectdb.jar to the plugin runtime classpath.
• Fixing "SELECT p FROM Point p" to "SELECT p FROM Pilot p" in View.

Attached the project after these modifications.

Hi

This is another bug. I cannot get past the previously mentioned line. I keep getting given apersistence error with "

No Persistence provider for EntityManager named $objectdb/db/pilots.odb" as the cause.

When I tried the tutorial example in a pure java project it worked fine. trying to use it in an EclipseRCP project is not working.

Thanks

Craig

I don't get this exception. It seems that the test works now:

Hi

Yes it works now thank you. I fixed that obvious bug. It worked only after I refreshed the workspace and cleaned then project.

Thanks for your help.

cmahony