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Good to see your post a bit lately. I came across the similar requirement recently.

This is how I implemented the logic as follows.

public void updateTaskPayload(Task task, Map newRequestPayloadMap) throws WorkflowException, StaleObjectException{
task = getTaskQueryService().getTaskDetailsByNumber(null, task.getSystemAttributes().getTaskNumber());
XMLElement taskPayloadElement = (XMLElement)task.getPayloadAsElement();
for(Map.Entry entry : newRequestPayloadMap.entrySet()){
setPayloadValue(taskPayloadElement, entry.getKey(), entry.getValue());
}
task.setPayloadAsElement(taskPayloadElement);
getTaskUpdateService().updateTask(null, task);
getTaskUpdateService().releaseTask(null, task); // Need to release the task
}
public void setPayloadValue(XMLElement taskPayloadElement, String pNodeName, String pNodeValue){
NodeList myNodeList = taskPayloadElement.getElementsByTagName(pNodeName);
if(myNodeList!=null && myNodeList.getLength() > 0){
Element myElement = (Element)myNodeList.item(0);
myElement.getFirstChild().setNodeValue(pNodeValue);
}
}

Hi

It was very helpful , I need this in my project, But i am getting null in workflowContext object.:( , I follow all instructions as above, But i am not sure why it's giving null.

Thanks,
Krrish

Hi Upon executing the code I am getting the below error:
<<.> VerficationService.checkOrLogUserTaskAction: Checking if user weblogic
can perform action RELEASE failed. Task Details: Task Id: 9ff3e0cf-c842-412f-97a6-a3351b383c71 State: ASSIGNED AssigeeUsers: [] AcquiredBy: null Permitted actions are: [UP
DATE_COMMENT, SKIP_CURRENT_ASSIGNMENT, VIEW_SUB_TASKS, DELEGATE, SUSPEND, UPDATE, UPDATE_ATTACHMENT, SUSPEND_TIMERS, ESCALATE, VIEW_PROCESS_HISTORY, REASSIGN, VIEW_TASK, C
USTOM, OVERRIDE_ROUTING_SLIP, WITHDRAW, ACQUIRE, VIEW_TASK_HISTORY, REDECISION] Roles played by user:[PUBLIC, ASSIGNEES, ADMIN, default.DefaultPerformer] Task Organization
alUnitId: null User OrganizationalUnits:[]>
<<.> Invalid action on workflow task or user does not have privilege to perform this
action.
Action RELEASE on task 9ff3e0cf-c842-412f-97a6-a3351b383c71 cannot be performed by weblogic.
Make sure that the action is valid with respect to the current state of the task or ensure that the user has privilege to perform this action on the workflow task.

ORABPEL-30036

Invalid action on workflow task or user does not have privilege to perform this action.
Action RELEASE on task 9ff3e0cf-c842-412f-97a6-a3351b383c71 cannot be performed by weblogic.
Make sure that the action is valid with respect to the current state of the task or ensure that the user has privilege to perform this action on the workflow task.


Pls help also the code is not updating the task if executed from ADF screens binded to the task.But if invoked externally it works fine but locks the instance by weblogic and is not releasing the task.I checked privileges of weblogic ,he has all the access.

it’s very use full to get idea about human task flow through java API


I have requirement like to add the extra tags to the task payload for ex:

Current task like




ABC









3456

10000









I need to add more invoice lines to the payload without affecting the existing invoice liens,

Could you please suggest the some approach.


Thanks,

Madhava.

Design your XSD such a way that it will accept multiple invoice lines.
Use the Java API with DOM parser to add the extra invoice lines to the task payload.

Regards
Albin I

Hi Albin,

Appreciate the write up. The xml payload setting with namespace stuff did not work for me though. I might have made a mistake. But another way to set payload without digging into namespace would be to use DOM Parser and set the values.
http://www.mkyong.com/java/how-to-modify-xml-file-in-java-dom-parser/
Hope this helps someone like me.

Thanks

This comment has been removed by the author.

thanks!!!

Hi Albin,

I am testing my update task by soap client what minimum payload can i use? I am passing credential and taskId but getting error.

Please help me to get required parameters to update task.

Thanks