TaskInstance::startTime always returns null

Method TaskInstance::getStart always returns null. As I can see - it is because nulls are stored into start_ column in jbpm_taskinstance table - seems some problem in task creation.

Here is test case for demonstating the problem:

package com.sample;

import java.util.Date;
import java.util.List;

import org.jbpm.db.AbstractDbTestCase;
import org.jbpm.graph.def.ProcessDefinition;
import org.jbpm.graph.exe.ExecutionContext;
import org.jbpm.graph.exe.ProcessInstance;
import org.jbpm.taskmgmt.def.AssignmentHandler;
import org.jbpm.taskmgmt.exe.Assignable;
import org.jbpm.taskmgmt.exe.TaskInstance;

public class TaskStartTimeTestCase extends AbstractDbTestCase {

public static class JohnAssignmentHandler implements AssignmentHandler {
private static final long serialVersionUID = 1L;
public void assign(Assignable assignable, ExecutionContext executionContext) throws Exception

{ assignable.setActorId("john"); }

}

public void testTaskStartTime()

{ ProcessDefinition processDefinition = ProcessDefinition.parseXmlString( "<process-definition>" + " <start-state>" + " <transition to='work' />" + " </start-state>" + " <task-node name='work'>" + " <task name='feed the chickens'>" + " <assignment class='com.sample.ProcessTerminationTestCase$JohnAssignmentHandler' />" + " </task>" + " <task name='walk the dog'>" + " <assignment class='com.sample.ProcessTerminationTestCase$JohnAssignmentHandler' />" + " </task>" + " <task name='play with wife'>" + " <assignment class='com.sample.ProcessTerminationTestCase$JohnAssignmentHandler' />" + " </task>" + " </task-node>" + "</process-definition>" ); graphSession.saveProcessDefinition(processDefinition); ProcessInstance processInstance = new ProcessInstance(processDefinition); processInstance.signal(); jbpmContext.save(processInstance); newTransaction(); List taskInstances = taskMgmtSession.findTaskInstances("john"); assertNotNull(taskInstances); assertEquals(3, taskInstances.size()); // get first task TaskInstance task = (TaskInstance)taskInstances.get(0); assertNotNull(task); // now, check the start time for the task and process: Date processStart = processInstance.getStart(); assertNotNull("Start time for the process should not be null", processStart); Date taskStart = task.getStart(); assertNotNull("Start time for the task should not be null", taskStart); }

}