[keycloak-dev] User Federation Provider with JPA

[Stian Thorgersen]

----- Original Message -----
> From: "alex orl" <alex_orl1079 at yahoo.it>
> To: keycloak-dev at lists.jboss.org
> Sent: Monday, 7 September, 2015 6:14:38 PM
> Subject: [keycloak-dev] User Federation Provider with JPA
> 
> I'm developing a keycloak user-federation-provider and i need to integrate it
> with the JPA persistence system in order to write on my legacy db and on the
> keycloak db.
> I read that Jboss WildFly already uses Hiberante 4.3 JPA, so i choose to
> follow this line for my project.
> Another requirement is to decouple the provider and the JPA
> model-mapping-project, so my JPA model-mapping-project has to be deployed a
> separated jar file.

You can use JBoss Modules and deploy your mapping as one model and the Keycloak provider as another.

> Following the keycloak userguide i deploy the provider simply coping the
> built jar project into the .../standalone/configuration/providers directory.
> The JPA model-mapping-project jar file is deployed into the Wildfly using the
> management console deployment section.
> Now i'm facing up to 2 problems:
> 1) the user-federation-provider doesn't see the model-mapping-project classes
> (throwing the ClassNotFoundException)
> 2) if i simply copy the model-mapping-project.jar into the
> /standalone/configuration/providers directory, the fereration provider sees
> the classes but the EntityManager dependency injection does not work
> (NullPointerException)
> 
> What the way i can solve this problem?
> Is there another way to deploy providers? and what about the jar and the
> depecency injection?
> Thanks
> Regards.
> 
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