WDRuntimeException: DataSource attribute of table not valid

[Former Member]

Hi,

I wrote a web dynpro java application.

I created node programatically, and i created table programatically again.

When i bind node to table it gets error below

Thanks.

Error

WDRuntimeException: DataSource attribute of table not valid

My code is below

Code

Creating node

IWDNodeInfo rootNodeInfo = wdContext.getNodeInfo();

IWDNodeInfo DNode =

rootNodeInfo.addChild("DNode", null, true, false, true, false, false, true, null, null, null);

DNode.addAttribute(

"BLM",

"ddic:com.sap.dictionary.string");

DNode.addAttribute(

"PER",

"ddic:com.sap.dictionary.string");

IWDNode node = wdContext.getChildNode("DNode", 0);

IWDNodeElement element = node.createElement();

element.setAttributeValue("BLM", "qwerty");

element.setAttributeValue("PER", "cvbcvbcvb");

node.addElement(element);

Binding to a table

IWDNodeInfo DNode = wdContext.getNodeInfo().getChild("DNode");

IWDTransparentContainer rootElement =

(IWDTransparentContainer) view.getRootElement();

IWDTable DTablo =

(IWDTable) view.createElement(IWDTable.class, "DTablo");

DTablo.bindDataSource(DNode); //error here

IWDTableColumn col1 =

(IWDTableColumn) view.createElement(

IWDTableColumn.class,

"BLM");

IWDTextView txtw1 =

(IWDTextView) view.createElement(IWDTextView.class, "BLMTX");

txtw1.bindText("DNode.BLM");

IWDTableCellEditor cled1 = txtw1;

col1.setTableCellEditor(cled1);

DTablo.addColumn(col1);

DTablo.setVisibleRowCount(20);

rootElement.addChild(DTablo);

[Former Member]

I defined the node and table creation codes inside the wdDoModifyView and delete from contoller.

It runs properly

[former_member197348]

Hi,

I used this code and it is working fine. I am using 7.0 SP 14.

wdDoInit()

{
IWDNodeInfo rootNodeInfo = wdContext.getNodeInfo();
		IWDNodeInfo DNode =
			rootNodeInfo.addChild(
				"DNode",
				null,
				true,
				false,
				true,
				false,
				false,
				true,
				null,
				null,
				null);
		DNode.addAttribute("BLM", "ddic:com.sap.dictionary.string");
		DNode.addAttribute("PER", "ddic:com.sap.dictionary.string");

		IWDNode node = wdContext.getChildNode("DNode", 0);
		IWDNodeElement elem1 = node.createElement();
		elem1.setAttributeValue("BLM", "blm1");
		elem1.setAttributeValue("PER", "per1");
		node.addElement(elem1);
		IWDNodeElement elem2 = node.createElement();
		elem2.setAttributeValue("BLM", "blm2");
		elem2.setAttributeValue("PER", "per2");
		node.addElement(elem2);
}

in wdDoModifyView(),

IWDNodeInfo DNode = wdContext.getNodeInfo().getChild("DNode");
		IWDTransparentContainer rootElement =
			(IWDTransparentContainer) view.getRootElement();
		IWDTable DTable =
			(IWDTable) view.createElement(IWDTable.class, "DTable");
		DTable.bindDataSource(DNode); //*error here*
		IWDTableColumn col1 =
			(IWDTableColumn) view.createElement(IWDTableColumn.class, "BLM");
		IWDTextView txtw1 =
			(IWDTextView) view.createElement(IWDTextView.class, "BLMTXT");
		txtw1.bindText("DNode.BLM");
		IWDTableCellEditor cled1 = txtw1;
		col1.setTableCellEditor(cled1);
	IWDCaption header1 = (IWDCaption) view.createElement(IWDCaption.class,"HEADER1");
		header1.setText("BLM");
		col1.setHeader(header1);
		DTable.addColumn(col1);
	IWDTableColumn col2 =
 (IWDTableColumn) view.createElement(IWDTableColumn.class,"PER");
	IWDTextView txtw2 = (IWDTextView)view.createElement(IWDTextView.class,"PERTXT");
	txtw2.bindText("DNode.PER");
	IWDTableCellEditor cled2 = txtw2;
	col2.setTableCellEditor(cled2);
	IWDCaption header2 = (IWDCaption) view.createElement(IWDCaption.class,"HEADER2");
		header2.setText("PER");
		col2.setHeader(header2);
		DTable.addColumn(col2);
		DTable.setVisibleRowCount(10);
		rootElement.addChild(DTable);

Can you give more details about the error?

Regards,

Siva

[Former Member]

Hi,

Node is generated in a method in controller.

Node generation method called in wdDoModifyView in a view and binded to a table.

Must i generate node in wdDoInit() in a view of table belongs to it?

Thanks.

[Former Member]

It's certainly possible to create context structures and UI elements at runtime, create the data binding and fill the context elements etc. But: is this really needed for your use case? If for example your static context structure already contains all attributes you want to display in your table and you only want to display a subset of them at a time, it would be much easier to just hide the table columns that are not to be displayed etc.

Could you give some more info on the problem you want to solve?

Armin