SAPUI5 and oData: Task completion problem

Question

Dear all,
We've got a BPM process which is based on WDJ approval screens.
Now I would like to replace WDJ by SAPUI5.
I've succeeded to display some task input data in my SAPUI5 application:
oPanel.bindElement("/InputData('"+taskId+"')", {expand:"ContextTypeINPUT/Context/Requester"});
var oInputFirstName = new sap.ui.commons.TextField("textFirstName", {
    value : "{ContextTypeINPUT/Context/Requester/FirstName}"
var oInputLastName = new sap.ui.commons.TextField("textLastName", {
    value : "{ContextTypeINPUT/Context/Requester/LastName}"
But I can't manage to complete the task.
For a simpler example that worked for me.
It seems that I don't fill the output data correctly.
Normally I should fill the Status (fields Action, ChangedBy, ChangedOn and Details) and the Request->ReferenceNumber:
Please find attached the XSD of the task.
I tried the following:
var outputData = {};
var status = odataModel.getProperty("/InputData('" + taskId "') " +
                  "/ContextTypeINPUT/Context/Status");
status.Action = "approved";
status.ChangedBy = "TEST";
status.ChangedOn = "2014-07-29";
outputData.HandleRequestCompleteEventTypeOUTPUT = status;
// send request to BPM Task Data OData service to complete
odataModel.create("/OutputData", outputData, null,
    function sendData_OnSuccess(oData, response) {
        alert("Task has been completed successfully");
    function sendData_OnError(oError) {
        alert("Task could not be completed");
But it stops when executing the second statement (var status = odataModel.getProperty("/InputData('" + taskId "')...).
I would really appreciate if you could help me!
Thanks in advance.
Best regards,
Thorsten.
P.S.: Our system is running NW 7.40 SP07.

Answer 1

Hi again,
As most of the time, I had to solve my issues published on SCN on my own
My mistake was, that I've retrieved the 'handleRequestType' of my OutputData from the InputData.
It seems that having all subtypes in the structure causes trouble, because I fill only to fill two fields.
In the end I build OutputData myself and it works now...
So in fact it's possible to create an proper OutputData without a binding of InputData.
controller.js
completeTask : function() {
// Get TaskID and data model
var taskId = getValueOfURLParameter("taskId");
var odataModel = this.getView().getModel();
// Create OutputData
var outputData = {};
// Create all needed subtypes
var handleRequestType = {};
var status = {};
var request = {};
// Fill values for fields that need to be sent
status.ChangedBy = sap.ui.getCore().byId("inputStatus").getValue();
request.ReferenceNumber = sap.ui.getCore().byId("inputRequest").getValue();
// Build OutputData
handleRequestType.Status = status;
handleRequestType.Request = request;
outputData.HandleRequestType = handleRequestType;
// Complete task with built OutputData
odataModel.create( "/OutputData", outputData, null,
     function sendData_OnSuccess(oData, response) {
          alert("Task has been completed successfully");
     function sendData_OnError(oError) {
          alert("Task could not be completed");
view.js
createContent : function(oController) {
// Text input fields which will feed the OutputData
var oInputStatus = new sap.ui.commons.TextField("inputStatus");
var oInputRequest = new sap.ui.commons.TextField("inputRequest");
// Button to complete the task
var oButton = new sap.ui.commons.Button( {
     text : "Complete",
     style : sap.ui.commons.ButtonStyle.Accept,
     press : (function() {
     oController.completeTask();
Just make sure that you explore your OuputData before via a tool like Postman (Chrome Addon).
First do a GET request:
http://<host>:<port>/bpmodata/taskdata.svc/<taskID>/OutputData
Then look for a "/XYZ" part in the response.
In my case it looked like that:
<link href="OutputData('<TaskID>')" rel="edit" title="OutputData"/>
<link href="OutputData('<TaskID>')/HandleRequestType" .../>
So I could go on to explore my output data, by sending the following GET request in Postman:
http://<host>:<port>/bpmodata/taskdata.svc/<taskID>/OutputData?$expand=HandleRequestType
Now you have to repeat that until you find the data type that you want manipulate.
If you found out how your OutputData looks like, you can build it easily on your own (see my controller.js).
Maybe I'll write my first blog about it