Hello,

I have been having trouble getting "jBPM integrated into a web app" while using Eclipse (Kepler).  As a test I am simply trying to replicate the code found in the jBPM Full Installer's evaluation sample into the template code produced by a Maven JavaEE6 Archetype.  I have noted my steps below so that the problem can be easily reproduced.

1) Add to the JBoss standalone.xml:

<datasource jndi-name="java:jboss/jdbc/jbpm-ds" pool-name="jBPMDS" enabled="true" use-java-context="true">

    <connection-url>jdbc:h2:mem:test;DB_CLOSE_DELAY=-1</connection-url>

    <driver>h2</driver>

    <security>

        <user-name>sa</user-name>

        <password>sa</password>

    </security>

</datasource>

2) JBoss Central > Maven Project > filter on "javaee6" (to create the "myservlet" Project):

    Archetype = jboss-javaee6-webapp

    Accept all defaults

3) Set src\main\resources\META-INF\persistencet.xml to contain:

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

<persistence version="2.0"

   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_2_0.xsd">

   <persistence-unit name="primary">

      <!-- If you are running in a production environment, add a managed

         data source, the example data source is just for proofs of concept! -->

      <jta-data-source>java:jboss/datasources/ExampleDS</jta-data-source>

      <properties>

         <!-- Properties for Hibernate -->

         <property name="hibernate.hbm2ddl.auto" value="create-drop" />

         <property name="hibernate.show_sql" value="false" />

      </properties>

   </persistence-unit>

</persistence>

4) Add a jBPM Runtime by pointing at the \runtime folder from the jBPM Full Installer.

5) Select the jBPM Perspective, right click the myservlet Project > Convert to jBPM Project.

6) Add to the Deployment Assembly the Java Build Path Entries | jBPM Library.

7) In src\main\java\com\mycompany\mywebapp\controller add to (arbitrarily chosen) MemberRegistration.java (which was automatically created as part of the Project) the following which comes from the evaluation sample code:

import java.util.HashMap;

import java.util.Map;

import org.drools.KnowledgeBase;

import org.drools.builder.KnowledgeBuilder;

import org.drools.builder.KnowledgeBuilderFactory;

import org.drools.builder.ResourceType;

import org.drools.io.ResourceFactory;

import org.drools.logger.KnowledgeRuntimeLogger;

import org.drools.logger.KnowledgeRuntimeLoggerFactory;

import org.drools.runtime.StatefulKnowledgeSession;

import org.jbpm.process.workitem.wsht.HornetQHTWorkItemHandler;

8) In this same module, in register() add the following which also comes from the evaluation sample code:

try {

    // load up the knowledge base

    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();

    kbuilder.add(ResourceFactory.newClassPathResource("Evaluation.bpmn"), ResourceType.BPMN2);

    KnowledgeBase kbase = kbuilder.newKnowledgeBase();

    StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

    HornetQHTWorkItemHandler humanTaskHandler = new HornetQHTWorkItemHandler(ksession);

    humanTaskHandler.setIpAddress("127.0.0.1");

    humanTaskHandler.setPort(5153);

    ksession.getWorkItemManager().registerWorkItemHandler("Human Task", humanTaskHandler);

    KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newThreadedFileLogger(ksession, "test", 1000);

    // start a new process instance

    Map<String, Object> params = new HashMap<String, Object>();

    params.put("employee", "krisv");

    params.put("reason", "Yearly performance evaluation");

    ksession.startProcess("com.sample.evaluation", params);

    System.out.println("Process started ...");

    logger.close();

    } catch (Throwable t) {

    t.printStackTrace();

}

Upon deploying along with the six jBPM WARs we get the error:

Caused by: java.lang.IllegalArgumentException: JBAS011470: Persistence unitName was not specified and there are 2 persistence unit definitions in application deployment "myservlet.war".  Either change the application to have only one persistence unit definition or specify the unitName for each reference to a persistence unit.

I have attached the server log.

Can someone explain what this error means and how to eliminate it?

Thank you.

Al