Node addElement or ChangeElement....

Hello ,
I have a senario that user enters some values and later if he wishes he can change the values he entred last time....
So right now I have doing something like:
wdContext.nodeAddress_Tmp().addElement(wdContext.currentContextElement().getRowNr(), newAddress_tmp);
in newAddress_tmp is the data which he entered first time or then change.... I am storing the user data in node at the row level..... so e.g at row 1 I entered the data, and 2nd time again at row1 I want to update the data.... , my question is instead of addElement, how I can update or modify at the same index ?
Pls suggest...if that is possible....
Regards,

I try to explain the issue again,
I have a table with some columns and among them a dropdown and button.
where for a particular row user can enter some address in one popup ( when user selects somthing from dropdown a popup will appers to take his values ). Once entered the address, he can later show/edit the data for that particular row ( while clicking on the button ) . Showing this address data working fine, my problem is EDIT:
when user after first entering the addrress details wished to change he click on button in table
I read the row nr and display him the data which he enters first time...... as I have stored the data against the row like this: node.addElement(rownr, data )
now he change the data on popup and click again submit, ( here starts my problem , that how I store this data in my node )
before I used node.addElemtn(rownr, data ) now if I use again node.addElement(rownr, data ) then I have for same row two entries, .....where as I want to rewrite the data for the same row.....
Edited by: Shah H on Aug 4, 2008 5:52 PM
Edited by: Shah H on Aug 4, 2008 8:12 PM

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Message was edited by:
 Sonal Mangla

Hi ,
There are a lot similar posts in forum.
You can also search help.sap.
Try this link. They have explained creation of similar context structure.
http://help.sap.com/saphelp_nw04/helpdata/en/13/4cde139306304480e89d815ffcf891/frameset.htm
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 }catch(Exception e){
 wdComponentAPI.getMessageManager().reportSuccess("ERROR"+e.getMessage());
but i wonder which part of the code i did wrongly.. as i wish to insert into my send email code
Properties props = new Properties();
 String host = "SMTP HOST";
 props.put("mail.smtp.host", host);
 Session session = Session.getInstance(props, null);
 MimeMessage message = new MimeMessage(session);
 Address toAddress = new InternetAddress();
 Address fromAddress = new InternetAddress();
 Address ccAddress = new InternetAddress();
 Address bccAddress = new InternetAddress();
 try
 MimeMultipart multipart = new MimeMultipart();
 BodyPart messageBodyPart = new MimeBodyPart();
 if (! wdContext.currentEmailElement().getFrom().equals(""))
 fromAddress = new InternetAddress(wdContext.currentEmailElement().getFrom());
 message.setFrom(fromAddress);
 if (! wdContext.currentEmailElement().getTo().equals(""))
 toAddress = new InternetAddress(wdContext.currentEmailElement().getTo());
 message.setRecipient(Message.RecipientType.TO, toAddress);
 if (! wdContext.currentEmailElement().getCc().equals(""))
 ccAddress = new InternetAddress(wdContext.currentEmailElement().getCc());
 message.setRecipient(Message.RecipientType.CC, ccAddress);
 if (! wdContext.currentEmailElement().getBcc().equals(""))
 bccAddress = new InternetAddress(wdContext.currentEmailElement().getBcc());
 message.setRecipient(Message.RecipientType.BCC, bccAddress);
 if (! wdContext.currentEmailElement().getSubject().equals(""))
 message.setSubject(wdContext.currentEmailElement().getSubject());
 if (! wdContext.currentEmailElement().getBody().equals(""))
 messageBodyPart.setText(wdContext.currentEmailElement().getBody());
 multipart.addBodyPart(messageBodyPart);
 messageBodyPart = new MimeBodyPart();
 String filename = IWDResource.getResourceName();
 DataSource source = new FileDataSource(filename);
 messageBodyPart.setDataHandler(new DataHandler(source));
 messageBodyPart.setFileName(source.getName());
 messageBodyPart.setHeader("Content-Type","application/pdf");
 multipart.addBodyPart(messageBodyPart);
 message.setContent(multipart);
 Transport.send(message);
 catch (AddressException e)
 wdComponentAPI.getMessageManager().reportWarning(e.getLocalizedMessage());
 e.printStackTrace();
 catch (SendFailedException e)
 wdComponentAPI.getMessageManager().reportWarning(e.getLocalizedMessage());
 e.printStackTrace();
 catch (MessagingException e)
 wdComponentAPI.getMessageManager().reportWarning(e.getLocalizedMessage());
 e.printStackTrace();
so i wonder could anyone help me out.. as i need to get the pdf filename order to put into the variable call filename at the send mail code.
below is the error message
java.lang.NullPointerException
 at com.sap.example.uploademail.Email.wdDoInit(Email.java:124)
 at com.sap.example.uploademail.wdp.InternalEmail.wdDoInit(InternalEmail.java:146)
 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:445)
 at com.sap.tc.webdynpro.progmodel.controller.Controller.init(Controller.java:200)
 at com.sap.tc.webdynpro.progmodel.view.ViewManager.getView(ViewManager.java:709)
 at com.sap.tc.webdynpro.progmodel.view.ViewManager.bindRoot(ViewManager.java:579)
 at com.sap.tc.webdynpro.progmodel.view.ViewManager.init(ViewManager.java:155)
 at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.doOpen(WebDynproWindow.java:295)
 at com.sap.tc.webdynpro.clientserver.window.ApplicationWindow.show(ApplicationWindow.java:183)
 at com.sap.tc.webdynpro.clientserver.window.ApplicationWindow.open(ApplicationWindow.java:178)
 at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.init(ClientApplication.java:364)
 at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.initApplication(ApplicationSession.java:748)
 at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:283)
 at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:759)
 at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:712)
 at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:261)
 at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:149)
 at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doContent(DispatcherServlet.java:62)
 at com.sap.tc.webdynpro.serverimpl.defaultimpl.DispatcherServlet.doGet(DispatcherServlet.java:46)
 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:401)
 at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:266)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:387)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:365)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:944)
 at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:266)
 at com.sap.engine.services.httpserver.server.Client.handle(Client.java:95)
 at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:175)
 at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
 at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
 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:100)
 at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)

facing same issue.
jdev 10.1.3.3.0, on expanding the database connection, I get a null pointer exception.
On the testing the connection it says 'success' though.
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