Dropdown list on table

[Former Member]

I would like to create a table which one of it's columns is DropDownByKey list.

The construction of my context is

-> MonthsOfYear Type Node cardinality 0..n

->-> DDLNode Type Node cardinality 1..n

->-> ABCVal Type String

->-> MonthName Type String

I implement the wdDoInit method as following:

public void wdDoInit()

{

//@@begin wdDoInit()

String[] monthNames = new String []

{

"January", "February", "March", "April",

"May", "June", "July", "August",

"September", "October", "November", "December",

};

ISimpleTypeModifiable myType=wdThis.wdGetAPI().getContext().getModifiableTypeOf("MonthsOfYear.DDLNode.ABCVal");

IModifiableSimpleValueSet values=myType.getSVServices().getModifiableSimpleValueSet();

values.put("0","A");

values.put("1","B");

values.put("2","C");

values.put("3","D");

values.put("4","E");

values.put("5","F");

values.put("6","G");

List monthsOfYear = new ArrayList();

for (int i = 0; i < monthNames.length; ++i)

{

IPrivateTableTestView.IDDLNodeElement ddlElement = wdContext.createDDLNodeElement();

IPrivateTableTestView.IMonthsOfYearElement monthElement = wdContext.createMonthsOfYearElement();

monthElement.setMonthName(monthNames<i>);

wdContext.nodeMonthsOfYear().addElement(monthElement);

wdContext.nodeMonthsOfYear().nodeDDLNode().addElement(ddlElement);

wdContext.currentDDLNodeElement().setABCVal("0");

}

//@@end

}

The problem is that after running the application I can see the selected value of dropdown list only on first row of my table. The dropdownlists on other rows are look like empty and I can see the values of these dropdown lists only when I choose the relevant row on the table.

Thanks in advanced for any help

Yoel

[Former Member · Accepted solution]

Hi,

I have tested the same with the following settings.

MonthOfYear(Cardinality :0..n;Selection :0..1;Singleton :true)

->DDLNode (Cardinality :1..n;Selection :1..1;Singleton :true)

Regards, Anilkumar

[Former Member · Accepted solution]

Could you please kindly send your project to

y_malekan@yahoo.com ?

I just can't solve these problems.

Yoel

[Former Member · Accepted solution]

The node structure is as follows

VnTable

|____Drop

|____AnotherTest

IWDAttributeInfo info=wdContext.nodeVnTable().getNodeInfo().getAttribute("Drop");

ISimpleTypeModifiable st=info.getModifiableSimpleType();

IModifiableSimpleValueSet sv=st.getSVServices().getModifiableSimpleValueSet();

sv.put("1","J");

sv.put("2","F");

for(int i=0;i<5;i++){

IPrivateSDNDropAppView.IVnTableElement ele=wdContext.createVnTableElement();

ele.setAnotherTest("Just a test");

wdContext.nodeVnTable().addElement(ele);

wdContext.nodeVnTable().getVnTableElementAt(i).setDrop("1");

Now the table should display the dropdown with J initially

Regards

Noufal

[Former Member]

Hi,

MonthOfYear (Cardinality :1..n;Selection :1..1;Singleton :true)

->DDLNode (Cardinality :1..n;Selection :1..1;Singleton :true)

add the following in the Init method

List monthsOfYear = new ArrayList();

for (int i = 0; i < monthNames.length; ++i)

{

IPrivate<VIEW>.IDDLNodeElement ddlElement = wdContext.createDDLNodeElement();

IPrivate<VIEW>.IMonthsOfYearElement monthElement = wdContext.createMonthsOfYearElement();

monthElement.setMonthName(monthNames<i>);

wdContext.nodeMonthsOfYear().addElement(monthElement);

wdContext.nodeMonthsOfYear().nodeDDLNode().addElement(ddlElement);

wdContext.nodeDDLNode().getElementAt(i).setAttributeValue("ABCVal","0");

}

Regards, Anilkumar

[Former Member]

Hi Anilkumar,

Thank you for your helpful answer. But I have yet afew problems:

1. I think that Singleton of DDLNode should be false. I set it to false and it caused that the DDLs on all rows changed to enabled.

2. In spite of all DDLs are now enabled (Singleton =false)

but only the value of dropdownlist of row 1 is set. the value of DDLs on other rows or still unset.

3. A extra unnecessary row is added to table (the first row)

Best regards

Yoel

[Former Member]

Hi Valery ,

I had suggested the same .I am wondering why its not working !!! Any ideas ??

Regards, Anilkumar

[Former Member]

Hi Valery,

As he is using a ValueSet for the dropdown byKey UI why should he make the node non-singleton would it be enough if he makes he cardinality 1..1 and bind it to the dropDownbyKey?

[Former Member]

Actually, it has to be tested first

But does WD should follow path for non-selected singleton nodes in rendering code? I'm not sure...

VS

[Former Member]

Anil,

Correct me if I'm wrong, but you are suggesting to change (only) selection to mandatory. And they key point here as I guess is setting off singleton property.

VS

[Former Member]

What I was saying is that as he is using the attribute inside the node only to sure the valueset he can set its cardinality as 1..1 or remove the node and just create an attribute? I hope I was not wrong here.

[Former Member]

Hi All,

First of all thank you for your answers. I did not solve the problem yet. Could you please answer the following questions:

1. When I set the DDLnode cardinality to 1..1 I got the followings error:

com.sap.tc.webdynpro.progmodel.context.ContextException: Node(TableTestView.MonthsOfYear.DDLNode): must not add elements to a Node of cardinality 0..1 or 1..1

at com.sap.tc.webdynpro.progmodel.context.Node.prepareAddElement(Node.java:720)

at com.sap.tc.webdynpro.progmodel.context.Node.addElement(Node.java:685)

at yoel.table.test.TableTestView.wdDoInit(TableTestView.java:141)

at yoel.table.test.wdp.InternalTableTestView.wdDoInit(InternalTableTestView.java:123)

at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.doInit(DelegatingView.java:61)

at com.sap.tc.webdynpro.progmodel.controller.Controller.initController(Controller.java:215)

at com.sap.tc.webdynpro.progmodel.view.View.initController(View.java:274)

at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:200)

at com.sap.tc.webdynpro.progmodel.view.ViewManager.getView(ViewManager.java:540)

at com.sap.tc.webdynpro.progmodel.view.ViewManager.bindRoot(ViewManager.java:422)

at com.sap.tc.webdynpro.progmodel.view.ViewManager.init(ViewManager.java:130)

at com.sap.tc.webdynpro.progmodel.view.InterfaceView.initController(InterfaceView.java:41)

at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:200)

at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.displayToplevelComponent(ClientComponent.java:134)

at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.init(ClientApplication.java:371)

at com.sap.tc.webdynpro.clientserver.task.WebDynproMainTask.execute(WebDynproMainTask.java:599)

at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:59)

at com.sap.tc.webdynpro.clientserver.cal.ClientManager.doProcessing(ClientManager.java:251)

at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doWebDynproProcessing(DispatcherServlet.java:154)

at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:116)

at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doGet(DispatcherServlet.java:48)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)

at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:391)

at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:265)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:345)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:323)

at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:865)

at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:240)

at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)

at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)

at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:37)

at com.sap.engine.core.cluster.impl6.session.UnorderedChannel$MessageRunner.run(UnorderedChannel.java:71)

at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)

at java.security.AccessController.doPrivileged(Native Method)

at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:94)

at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:162)

____________________________________

2. If I set singleton to false and cardinality 1..1 I got the following error:

java.lang.NullPointerException

at yoel.table.test.wdp.IPrivateTableTestView$IContextNode.createDDLNodeElement(IPrivateTableTestView.java:150)

at yoel.table.test.TableTestView.wdDoInit(TableTestView.java:135)

at yoel.table.test.wdp.InternalTableTestView.wdDoInit(InternalTableTestView.java:123)

at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.doInit(DelegatingView.java:61)

at com.sap.tc.webdynpro.progmodel.controller.Controller.initController(Controller.java:215)

at com.sap.tc.webdynpro.progmodel.view.View.initController(View.java:274)

at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:200)

at com.sap.tc.webdynpro.progmodel.view.ViewManager.getView(ViewManager.java:540)

at com.sap.tc.webdynpro.progmodel.view.ViewManager.bindRoot(ViewManager.java:422)

at com.sap.tc.webdynpro.progmodel.view.ViewManager.init(ViewManager.java:130)

__________________________________________

3. How can I implement DDL in table without using a particular node for it? Could you please supply more details.

And again Thanks for any comment.

Yoel

[Former Member]

Hi Yoel

According to your code, only the currentElement (ie. the element that has been selected presently) will show the initial value.

So, instead of wdContext.currentDDLNodeElement().setABCVal("0"), try

ddlElement.setABCVal("0");

before

wdContext.nodeMonthsOfYear().addElement(monthElement);

wdContext.nodeMonthsOfYear().nodeDDLNode().addElement(ddlElement);

This should surely work.

Regards

Leena

[Former Member]

Hi Leena,

I changed the code as you describe, but after rebuild and redeploy the program nothing changed.

The code now look like following:

for (int i = 0; i < monthNames.length; ++i)

{

IPrivateTableTestView.IDDLNodeElement ddlElement = wdContext.createDDLNodeElement();

IPrivateTableTestView.IMonthsOfYearElement monthElement = wdContext.createMonthsOfYearElement();

monthElement.setMonthName(monthNames<i>);

ddlElement.setABCVal("0");

wdContext.nodeMonthsOfYear().addElement(monthElement);

wdContext.nodeMonthsOfYear().nodeDDLNode().addElement(ddlElement);

//wdContext.currentDDLNodeElement().setABCVal("0");

}

The result is like followig:

-

---

January

A v

|----

---

February

v

-

---

March

v

-

---

Except of the first row the values of ddl apears after selecting the relevant row.

Thanks for any help.

|

[Former Member]

Hi,

It seems you are using a node for the dropdown attribute. That is unnecessary. You can have the dropdown attribute as the child of the root node.

or change the cardinality of the node that conntains the dropdown to 1..1.

IPrivateTableTestView.IMonthsOfYearElement monthElement = wdContext.createMonthsOfYearElement();

wdContext.nodeMonthsOfYear().addElement(monthElement);

wdContext.currentDDLNodeElement().setABCVal("0");

Regards,

Noufal

Message was edited by: Noufal Kareem

[Former Member]

Bingo!

Also my comments on this:

<i>or change the cardinality of the node that conntains the dropdown to 1..1</i>

Not absolutely correct -- change it to non-singleton, set selection to mandatory (or initialize lead selection to true).

VS

[Former Member]

Hi,

Make the "Selection" of the DDLNode as 1..1.

Regards, Anilkumar

[Former Member]

Hi,

I don;t think this is the right way, but you can try this

wdContext.nodeDDLNode().getElementAt(i).setAttributeValue("ABCVal","0");

insted of "wdContext.currentDDLNodeElement().setABCVal("0");

"

Regards, Anilkumar

[Former Member]

Hi,

Thank you for your respond. I tried "setAttributeValue("ABCVal","0")", But same result: The dropdownlist in the first row is set and is OK. But in other rows the DDL is unselected. only after clicking the row I can see the values of DDL.

Regards

Yoel