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Hi Demian,

Sorry for being so dump :(

What could be the wrong with following code. I am getting NPE.

public void init() throws ServletException {

super.init();

try {

UserTransaction ut = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");

ut.begin();

StatefulKnowledgeSession ksession = JbpmAPIUtil.getSession();

/* Create the knowledge base */

JPAWorkingMemoryDbLogger logger = new JPAWorkingMemoryDbLogger (ksession);

JPAProcessInstanceDbLog processInstaceLogger = new JPAProcessInstanceDbLog (ksession.getEnvironment());

CommandBasedWSHumanTaskHandler taskHandler = new CommandBasedWSHumanTaskHandler(ksession);

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

taskHandler.connect();

ut.commit();

logger.dispose();

processInstaceLogger.dispose();

} catch (Throwable t) {

// log.error(t.getMessage(), t.getCause());

throw new RuntimeException("error while creating session", t);

}

Nov 24, 2011 10:26:14 PM org.apache.catalina.core.ApplicationContext log

SEVERE: StandardWrapper.Throwable

java.lang.RuntimeException: error while creating session

at com.sample.processserver.TaskProcessServlet.init(TaskProcessServlet.java:43)

at javax.servlet.GenericServlet.init(GenericServlet.java:160)

at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1190)

at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1103)

at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1010)

at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4957)

at org.apache.catalina.core.StandardContext$3.call(StandardContext.java:5284)

at org.apache.catalina.core.StandardContext$3.call(StandardContext.java:5279)

at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

Caused by: java.lang.NullPointerException

at org.jbpm.process.audit.JPAProcessInstanceDbLog.dispose(JPAProcessInstanceDbLog.java:165)

at com.sample.processserver.TaskProcessServlet.init(TaskProcessServlet.java:40)

... 12 more

Nov 24, 2011 10:26:14 PM org.apache.catalina.core.StandardContext loadOnStartup

SEVERE: Servlet /OrderFactoryWeb threw load() exception

java.lang.NullPointerException