Accessing EntityManagerFactory from Seam Interceptor

[ktcorby]

I am writing an interceptor that needs to access an entitymanagerfactory. How can I accomplish this?

Here is some of my relevant code, in which you can see a couple of the approaches I have tried that don't work.

package com.ccri.gotm.hibernate4gwt;

import java.io.Serializable;
import javax.naming.InitialContext;
import javax.persistence.EntityManagerFactory;
import net.sf.hibernate4gwt.core.HibernateBeanManager;
import net.sf.hibernate4gwt.core.LazyKiller;
import org.jboss.seam.Component;
import org.jboss.seam.annotations.intercept.AroundInvoke;
import org.jboss.seam.annotations.intercept.Interceptor;
import org.jboss.seam.async.AsynchronousInterceptor;
import org.jboss.seam.intercept.AbstractInterceptor;
import org.jboss.seam.intercept.InvocationContext;

@Interceptor(stateless = true, around = AsynchronousInterceptor.class)
public class RemoveHibernateTypesInterceptor extends AbstractInterceptor implements Serializable {
    private InitialContext context;
    
    @AroundInvoke
    public Object aroundInvoke(InvocationContext invocation) throws Exception {
        context = new InitialContext();
        EntityManagerFactory emf = (EntityManagerFactory) context.lookup("java:/entityManagerFactory");
        //EntityManagerFactory emf = (EntityManagerFactory) Component.getInstance("entityManagerFactory");
        HibernateBeanManager hbm = HibernateBeanManager.getInstance();
        hbm.setEntityManagerFactory(emf);
        LazyKiller lazyKiller = new LazyKiller(null, hbm.getPersistenceUtil());
        Object o = invocation.proceed();
        o = lazyKiller.detach(o);
        return o;
    }
}

<?xml version="1.0" encoding="windows-1252"?>
<components xmlns="http://jboss.com/products/seam/components" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:security="http://jboss.com/products/seam/security" 
    xmlns:core="http://jboss.com/products/seam/core"
    xmlns:spring="http://jboss.com/products/seam/spring">

    <spring:context-loader config-locations="/applicationContext.xml"/>
    <core:entity-manager-factory name="entityManagerFactory"
        persistence-unit-name="gotm-ejb" persistence-unit-jndi-name="java:/entityManagerFactory" />
    <security:identity authenticate-method="#{authManager.login}"/>
</components>