JBoss Community

Hello -

I've been wrestling with this for about a day and a half, now.  My environment is jBPM 5.2.0.Final, running on JBoss 5.1.0.GA, with Java 1.5.0_12, under 64-bit Windows 7.  It's entirely possible that I am missing some portion of configuration, but I'm not able to determine what it is, exactly, that I'm missing.

I am attempting to create a new StatefulKnowledgeSession, and start a process with it, using the JPAKnowledgeService, as described in the documentation.  The code I am using to do this is as follows:

KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();

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

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

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

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

  kBase = kbuilder.newKnowledgeBase();

  // create the entity manager factory and register it in the environment 

EntityManagerFactory emf =     Persistence.createEntityManagerFactory( "org.jbpm.persistence.jpa" );

env = KnowledgeBaseFactory.newEnvironment();

env.set( EnvironmentName.ENTITY_MANAGER_FACTORY, emf );

env.set( EnvironmentName.TRANSACTION_MANAGER, jtaManager);

kSession =  JPAKnowledgeService.newStatefulKnowledgeSession( kBase, null, env );

When it reaches this last line, it throws an InvocationTargetException, which I've managed to narrow down to the constructor call on SingleSessionCommandService, which appears to not exist:

Caused by: java.lang.reflect.InvocationTargetException

          at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

          at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

          at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

          at java.lang.reflect.Constructor.newInstance(Constructor.java:494)

          at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:129)

          ... 85 more

The persistence.xml I've put in place for the JPA persistence looks like this:

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

  <persistence

  version="1.0"

  xsi:schemaLocation=

    "http://java.sun.com/xml/ns/persistence

     http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd

     http://java.sun.com/xml/ns/persistence/orm

     http://java.sun.com/xml/ns/persistence/orm_1_0.xsd"

  xmlns:orm="http://java.sun.com/xml/ns/persistence/orm"

  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xmlns="http://java.sun.com/xml/ns/persistence">

  <persistence-unit name="org.jbpm.persistence.jpa" transaction-type="JTA">

    <provider>org.hibernate.ejb.HibernatePersistence</provider>

    <jta-data-source>java:DefaultDS</jta-data-source>

    <mapping-file>META-INF/JBPMorm.xml</mapping-file>

    <class>org.drools.persistence.info.SessionInfo</class>

    <class>org.jbpm.persistence.processinstance.ProcessInstanceInfo</class>

    <class>org.drools.persistence.info.WorkItemInfo</class>

    <properties>

      <property name="hibernate.dialect" value="org.hibernate.dialect.OracleDialect"/>

      <property name="hibernate.max_fetch_depth" value="3"/>

      <property name="hibernate.hbm2ddl.auto" value="update"/>

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

      <property name="hibernate.transaction.manager_lookup_class"

                value="org.hibernate.transaction.JBossTransactionManagerLookup"/>

    </properties>

  </persistence-unit>

</persistence>

Any and all help would be appreciated, and I can provide additional information if needed.