Null pointer Exception while setting a value

[Former Member]

Hi,

Im trying to move the contents of a model node into a Value node. But I am getting a null pointer exception.

Here is my structure

Source node:

<Model Node>

-

---

<Output Node>

-

---

<Li Node> (li_Shipper)

-

---

<Model Attribute>

Destination node

<Model Node>

-

---

<Output Node>

-

---

<Li Node> (li_Allocations)

-

---

<Value Node> (Shipper_DD) 0..1 singleton-false

-

---

<Value Attribute> (Shipper)

My code is as follows:

for (int i=0; i<wdContext.nodeLi_Allocations().size();i++)

{

WDCopyService.copyElements(wdContext.nodeLi_Shipper(),wdContext.nodeLi_Allocations().getLi_AllocationsElementAt(i).nodeShipper_DD());

// Here im trying to assign a default value. Im getting the null pointer exception in this line.

wdContext.nodeLi_Allocations().getLi_AllocationsElementAt(i).nodeShipper_DD().currentShipper_DDElement().setShipper(wdContext.nodeLi_Allocations().getLi_AllocationsElementAt(i).getShipper());

}

Can anyone tell me how I can rectify this?

[Former Member · Accepted solution]

Reena,

Set the cardinality of the <Value Node> (Shipper_DD) to 1:1.

Bala

[Former Member · Accepted solution]

Hi Reena,

You need to first bind the model object vairables in the wdDoInit() method of the controller.

And after you have done that you can set the values like this:

IPrivate<View>.I<Node>Element ele= wdcontext.createnodeCElement();

ele.setItem1(<value>);

wdcontext.nodeC.addElement(ele);

Please try to create an element under the node. Please check the code for syntax. I hope this should solve your problem.

Thanks & Regards

--Vishal Sood

<b>PS: Please provide points for helpful answers</b>

[Former Member · Accepted solution]

Hi

Thanks a lot.

The problem is solved.

Thanks and Regards,

Reena

[Yashpal]

Hi Reena,

have u created the instance of value node u r using........if no create it and then try.......

Regards,

Yash