How to set default value of DropDownByKey to first value of the list

[Former Member]

Hi experts,

I have a Web Dynpro java application which requires me to set a default value to the DropDownByKey element. Currently the lead selection of the element is an empty string, so I would like to know how to set the default value to the first non-empty value in the list.

Any code snippet will be helpful.

Thanks,

Ju Lian

[former_member261897 · Accepted solution]

you should initialize attribute that mapped on selected key value of DropDownByKey - with default value

for example

property Key Value of DropDownByKey is mapped on attribute context Key

so

in wdDoInit you should write:

wdContext.currentContextElement.setKey(<default value>);

[Former Member · Accepted solution]

Thank you Pavel,

The problem is the values of the dropdownbykey list is dynamic, therefore it is not possible for me to set the key based on the value, I need to set the default value by index.

//Ju Lian

[shankha_saha · Accepted solution]

Hi Ju Lian,

As the value list is populated at runtime, you can try below.

Create one context attribute (SUB_TYPE) which will hold the data. And create one simple dictionary type object(SUB_TYPE) without any value in enumeration tab and assign this as a type to the context attribute(SUB_TYPE).

In the coding area write the below code to generate the list with runtime data

IWDAttributeInfo attributeInfo = wdContext.getNodeInfo().getAttribute(IPrivateTestView.IContextElement.SUB_TYPE);

ISimpleTypeModifiable subType = attributeInfo.getModifiableSimpleType();

subType.setFieldLabel("Test Fields");

subType.setDefaultValue(wdContext.currentContextElement().getAtt1())

IModifiableSimpleValueSet valueSet = subType.getSVServices().getModifiableSimpleValueSet();

valueSet.clear();

valueSet.put(wdContext.currentContextElement().getAtt2(), wdContext.currentContextElement().getAtt2_1());

valueSet.put(wdContext.currentContextElement().getAtt3(), (wdContext.currentContextElement().getAtt4());

The default value will be the Att1 . Organize imports for missing imports.

Thanks

Shankha

Edited by: Shankha_Saha on Feb 1, 2012 8:03 AM

[govardan_raj · Accepted solution]

hi

if you are doing svs for an attibute dynamically that is run time , then to set the DDBykey To first value by default is simple as shown

IWDAttributeInfo attributeInfo = wdContext.nodeVnOrderList().getNodeInfo().getAttribute(IPrivateSlsOrdListView.IVnOrderListElement.VA_I__STATUS);
		ISimpleType simpleType = attributeInfo.getSimpleType();
		ISimpleValueSet valueset = simpleType.getSVServices().getValues();
		//Object key = element.getAttributeValue(attributeName);
		if(valueset.size() > 0)
		{
			wdContext.currentVnOrderListElement().setVaI_Status(valueset.getKey(0).toString());	
		}

in the above code the status is the attribute for which the svs is done and it is binded to DDBKey ul element

and rest all u can understand from the code.......

[p330068 · Accepted solution]

Dear Ju Lian,

When you populate the DropDownByKey, you will use like :-

//CODE FOR POPULATING DATA FOR DropDownByKey
IWDAttributeInfo attributeInfo = wdContext.node<NODE NAME123>().getNodeInfo().getAttribute("<ATTRIBUTE123>");	
ISimpleTypeModifiable var = attributeInfo.getModifiableSimpleType();
svs = var.getSVServices().getModifiableSimpleValueSet();
svs.clear();

svs.put("0".toString(), "Select".toString());	
			
if(list.size()==0){
       wdComponentAPI.getMessageManager().reportException("No Data Available.",true);
}else{			
        for(int i=0;i<<DYNAMIC NODE>.size();i++){			
             svs.put(<DYNAMIC KEY>, <DYNAMIC VALUE>);				
         }
}

//CODE FOR DEFULT VALUE SETTING FOR DropDownByKey
IWDAttributeInfo nodeInfo = wdContext.node<NODE NAME123>().getNodeInfo().getAttribute("<ATTRIBUTE123>");
ISimpleType simpleType = nodeInfo.getSimpleType();
ISimpleValueSet valueSet = simpleType.getSVServices().getValues();
wdContext.current<NODE NAME123>Element().set<ATTRIBUTE123>(valueSet.getText(valueSet.getKey(0).toString()));

Hope it will resolve your issue.

Best Regards

Arun Jaiswal

[Former Member]

Hi,

Set the attirbute value to one of the values present in the value set and it will come as default in the dropdown.

These links may be helpful

http://help.sap.com/saphelp_nw70/helpdata/en/bb/69b441b0133531e10000000a155106/content.htm

Forum

http://forums.sdn.sap.com/thread.jspa?threadID=1863848

Thanks,

Jyothi.

[Former Member]

Hi,

Try these following links.

http://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/web-dynpro-java/_we...

http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/f0e57440-ec1c-2a10-36b1-fe92341f9...

[govardan_raj]

hi

if you are doing svs for an attibute dynamically that is run time , then to set the DDBykey To first value by default is simple as shown

IWDAttributeInfo attributeInfo = wdContext.nodeVnOrderList().getNodeInfo().getAttribute(IPrivateSlsOrdListView.IVnOrderListElement.VA_I__STATUS);
		ISimpleType simpleType = attributeInfo.getSimpleType();
		ISimpleValueSet valueset = simpleType.getSVServices().getValues();
		//Object key = element.getAttributeValue(attributeName);
		if(valueset.size() > 0)
		{
			wdContext.currentVnOrderListElement().setVaI_Status(valueset.getKey(0).toString());	
		}

in the above code the status is the attribute for which the svs is done and it is binded to DDBKey ul element

and rest all u can understand from the code.......