[jboss-user] [EJB 3.0 Development] - EJB 3.1 Embedded EJBContainer in AS

Andrew Rubinger do-not-reply at jboss.com
Wed May 12 11:45:34 EDT 2010

Andrew Rubinger [http://community.jboss.org/people/ALRubinger] created the discussion

"EJB 3.1 Embedded EJBContainer in AS"

To view the discussion, visit: http://community.jboss.org/message/542619#542619

I'm tracking integration of the Embedded EJB3 "EJBContainer" APIs into AS here:

 https://jira.jboss.org/jira/browse/JBAS-7964 https://jira.jboss.org/jira/browse/JBAS-7964

The task for the "embedded" component is:

 https://jira.jboss.org/jira/browse/EJBTHREE-2083 https://jira.jboss.org/jira/browse/EJBTHREE-2083

We now have a passing test in my development branch of AS.  It:

* Deploys a Servlet into AS
* Issues an HTTP request to the Servlet
* Servlet then starts a new EJBContainer and deploys a ShrinkWrap archive into it (which is a JBoss-specific extension)
* Looks up the EJB proxy using EJBContainer.getContext() and invokes upon it
* Returns the result to the caller

Pending is still to split the ShrinkWrap-specific stuff out into an extension module, but it proves we're on the way to something working from inside AS.  It's essentially spec API wrappers to our existing runtime.

 http://anonsvn.jboss.org/repos/jbossas/branches/TEMP_EJB3_EMBEDDABLE_JBAS-7964/embedded/src/test/java/org/jboss/jbossas/embedded/testsuite/servlet/EmbeddedEjbCallingServlet.java http://anonsvn.jboss.org/repos/jbossas/branches/TEMP_EJB3_EMBEDDABLE_JBAS-7964/embedded/src/test/java/org/jboss/jbossas/embedded/testsuite/servlet/EmbeddedEjbCallingServlet.java

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package org.jboss.jbossas.embedded.testsuite.servlet;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;

import javax.ejb.embeddable.EJBContainer;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jboss.ejb3.embedded.api.JBossEJBContainer;
import org.jboss.jbossas.embedded.testsuite.ejb3.slsb.OutputBean;
import org.jboss.jbossas.embedded.testsuite.ejb3.slsb.OutputLocalBusiness;
import org.jboss.shrinkwrap.api.ShrinkWrap;
import org.jboss.shrinkwrap.api.spec.JavaArchive;

 * Servlet which forwards calls upon an EJB
 * via the {@link EJBContainer} API.
 * @author <a href="mailto:andrew.rubinger at jboss.org">ALR</a>
 * @version $Revision: $
public class EmbeddedEjbCallingServlet extends HttpServlet

   // Class Members ----------------------------------------------------------------------||

    * Logger
   private static final Logger log = Logger.getLogger(EmbeddedEjbCallingServlet.class.getName());

    * serialVersionUID
   private static final long serialVersionUID = 1L;

    * Content type to use in forwarding
   private static final String CONTENT_TYPE_TEXT_PLAIN = "text/plain";

   // Overridden Implementations ---------------------------------------------------------||

    * Returns the value {@link OutputLocalBusiness#OUTPUT} by invoking via an EJB
    * @see javax.servlet.http.HttpServlet#doGet(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
   protected void doGet(final HttpServletRequest request, final HttpServletResponse response) throws ServletException,
      // Log
      log.info("Request: " + request);

      // Set the content-type to text

      // Create the EJB Container
      final Map<String, String> ejbContainerProps = new HashMap<String, String>();
      ejbContainerProps.put(EJBContainer.MODULES, ""); // Deploy no modules and do no scanning by default
      final JBossEJBContainer ejbContainer = (JBossEJBContainer) EJBContainer.createEJBContainer(ejbContainerProps);

      // Define the EJB JAR
      final JavaArchive archive = ShrinkWrap.create("outputSlsb.jar", JavaArchive.class).addClasses(OutputBean.class,

      // Deploy the JAR

      // Look up the EJB
      final Context context = ejbContainer.getContext();
      final OutputLocalBusiness bean;
         bean = (OutputLocalBusiness) context.lookup(OutputLocalBusiness.JNDI_NAME);
      catch (final NamingException e)
         throw new RuntimeException("Could not find bean proxy at " + OutputLocalBusiness.JNDI_NAME, e);

      // Invoke
      final String value = bean.getOutput();

      // Undeploy

      // Shut down EJBContainer

      // Write out
      log.info("Got value from EJB: " + value);



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