How to destroy and restart Web Dynpro application by triggering an action?

I try to implement a screen flow that when user click on "Reset" button, it will restart the application (screen flow) again.
Said, when the user processed till Screen 3, he/she decide to "Reset" and restart again, all the context in all controllers (view, custom and component) will be destroy (bind() to new element , or clean up), then start from the first screen again.
I figure out that the best way to do this is to destroy the current application session, and restart a new one . In this case, you don't have to worry about clean up the context , then navigate to the first screen when you click "Reset button".
I am thinking is it a good idea by trigger the exitPlug() then navigate to the URL of the same WD application again?
Please advise.
Thanks a lot.
Kent

Hi Kent,
I have tried the method of creating the exit plug from the interface view of the controller, and then returning to the same URL of the application.
It works fine and all the contexts, their values and controller contexts are cleared.
For my application it is working great....
Regards,
Alka

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Reg: Closing and Opening Web Dynpro Application in same browser

Dear Experts
In my webdynpro application when i click a button another web dynpro application is opened in another window(another browser) .
But i want to open the second web dynpro application inside the same browser in which closing the first applicaiton and opening the second web application in same browser window .
Please guide me to do this.
Regards
Arun

hi ,
Exit plugs have the special property that they use the defined URL parameter. After you have created the URL parameter in the parameter list on the Outbound Plugs tab page in the window editor, you can specify a value for this parameter in the method that calls the exit plug.
ref
link:[http://help.sap.com/saphelp_nw70ehp1/helpdata/en/48/ca3351508f04e7e10000000a42189c/content.htm]
it would help u
regards,
amit

How can I convert my Web Dynpro Application to Web Dynpro with GP Interface

Hi experts
I am trying to make my Web Dynrpo Application implement GP interface.
I encountered a question .
when I added GP interface controller, "Window" component also added automatically.
But I have already had a "Window" componet which contains alot of View settings.
Do I have to Use newly added GP "Window" component?
if so, do I have to recreate "Window" Componet whenever I convert to my web dynpro application implementing GP interface ?
Thanks in advance

Yes you have to use the automatically added window.
Check <a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/50d74ada-0c01-0010-07a8-8c118d408e59">this</a> tutorial on how to implement a GP WD.
Regards,
Christophe

How to remove unwanted deployed web dynpro application

Hello,
I am using NWDS 7.1 Visual composer to develop the web dynpro application
I had created many application and deleted it from NWDS Visual composer
now each time i had deployed the application so its showing me the deployed roles in the portal so there is lost of duplicate role name in the portal and all deployed iviews and pages are displaying in the administrator account.
Please help me to remove this unwanted roles and application.
Thanks,
Dhruv

Hi Dhruv,
Start your Visual Administration and then navigate through Cluster tab Server>Services>Deploy>Runtime tab>Server>webdynpro>expand the node and selected the unwanted Webdynpro application and click on "Remove" button.
Regards
Basha

Difference between mobile web dynpro and simple web dynpro application

Hi Everyone,
Can anyone pls let me know what's the difference b/w mobile web dynpro application and an offline or simple web dynpro application.
Thank U!!
Ravi Aswani

Hi ,
Mobile WebDynpro
The SAP Web Application Server allows direct online access to Web Dynpro applications using mobile devices. As part of the SAP Web Application Server, Web Dynpro provides a development and runtime environment with which you can quickly and simply create professional user interfaces for desktop PCs or for mobile devices. An appropriate infrastructure and renderer classes are provided for developing mobile Web Dynpro applications for Pocket PCs as well as for BlackBerry Wireless Handhelds and Nokia Series 80 devices.
http://help.sap.com/erp2005_ehp_03/helpdata/EN/fa/100d4113eff16fe10000000a1550b0/frameset.htm
WebDynpro Java
Web Dynpro is a client-independent programming model of the SAP NetWeaver technology platform for developing user interfaces for professional business applications. It is based on the model view controller paradim which ensures that the business logic is separated from the presentation logic. This architecture is visible in the Web Dynpro perspective of the SAP NetWeaver Developer Studio (NWDS).
Web Dynpro helps you with the development of Web applications by:
·        Ensuring platform-independence with the meta model approach
·        Minimizing the implementation effort through declarative programming
·        Supporting a structured design process by applying the model view controller paradigm
·        Providing reuse and better maintainability by using components
·        Providing graphical support with tools in the Web Dynpro perspective
·        Providing the SAP NetWeaver Java Development Infrastructure (NWDI) which supports team work with different services such as source code versioning and the Central Build Service.
http://help.sap.com/erp2005_ehp_03/helpdata/EN/fa/100d4113eff16fe10000000a1550b0/frameset.htm
Thanks
Suresh
Edited by: Suresh Mandalapu on Sep 2, 2008 11:07 AM

Web Dynpro application needs to never expire.

Hi
I have a Web Dynpro application (NW2004 SP12) that displays spreadsheet like sales data to anyone who walks past the screen in a common area in the office/s. It should therefore run unattended. It refreshes the data on a timer. The data comes from a back-end aRFC. Everything works fine but about every 1.5 days the application times out (session expires) and needs to be re-opened (this seems to be a large administrative problem to re-login at all the deployment sites).
It gives an error 500application has expired. Please restart with the refresh button
In testing/troubleshooting I used the direct URL to the application running on WAS and not through a Portal iView.
I also changed the System destination from using SSO to using a dedicated user to the back-end.
Does anyone have an idea on how to auto refresh a Web Dynpro application or auto-renew the session so that it can run forever or a way to re-login automatically?
Thanks in advance,
Rick Viljoen

Hi Isidro
Yes, this was my final solution. Here is the code for the htm page. It will refresh/reload every 6 hours. Hope it helps.
Regards,
Rickus
<html>
<head></head>
<body>
<div id = div1></div>
<script type="text/javascript">
function putIF(hldr,x,y,w,h,url) {
   // Iframe
   holder=document.getElementById(hldr);
   holder.style.position ='absolute';
   holder.style.left=x;
   holder.style.top=y;
   holder.style.width=w;
   IF=document.createElement("iframe");
   IF.setAttribute("height", h);
   IF.setAttribute("width", w);
   IF.setAttribute("src", url);
   if (holder.hasChildNodes()) {
          var oChild=holder.children(0);
          holder.removeChild(oChild);
   holder.appendChild(IF);
   var myDate=new Date();
   window.status="Last reload on: " + myDate;
function refreshiframe() {
     myWidth = document.body.offsetWidth-21;
     myHeight = document.body.offsetHeight-4;
     putIF("div1","0px","0px",myWidth,myHeight,"http://<server>:<port>/webdynpro/dispatcher/local/SalesD/SalesD?j_user=xxx&j_password=ppp");
     window.setTimeout(refreshiframe, 21600000);
refreshiframe();
</script>
</body></html>

Need to create a Web Dynpro Application for SRM Portal

We need to recreate the start page for SRM Portal - (Supplier Self-Services) - without any images (as was delivered out of the box) - basically we need to break it down into 4 iViews: All Purchase Orders; All Sched Agreement Releases; All Invoices and Credit Memos; and Account History. All these iViews contains links.
How would one create a Web Dynpro Application to create the above iViews?
Regards,

Hi zhang,
take a look to this:
KM:
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/kmc/resource%2band%2bcollection%2bversioning%2busing%2bkm%2bapis
https://help.sap.com/javadocs/NW04S/SPS09/km/index.html
Excel:
/people/subramanian.venkateswaran2/blog/2006/10/02/enhanced-file-upload--uploading-and-processing-excel-sheets
Hope this help you.
Vito

Handle transaction in web dynpro applications

Hello,
can you please tell me How to handle transaction in web dynpro applications which is using Adaptive RFC model ?
Thanks,
Teja

Hi,
please see this [thread|Link to SAP Transaction using WebDynpro for Java;
regards,

How to display the error message during the web dynpro application runtime

hi,
    I'm a java developer,During i 'deploy and run ' a web dynpro application on server-1,if the application have some runtime errors. there are displayed many infomation about the runtime error,such as exception track,etc.
    But when i do the same on server-2,there just show something like:
            500   Internal Server Error
                                SAP NetWeaver Application Server 7.00/Java AS 7.00
            Failed to process request. Please contact your system administrator.
but the server-1 will stop the j2ee engine.
how can do i make server-2 show detail error message as server-1. when i debug web dynpro application need these infomation.
Appreciate your inputs...
(Note:server-1 and server-2 have same software version)
Edited by: BingLin Zhong on Feb 18, 2008 2:13 AM

The Sap-Notes 962319:
1. Check in the Visual Administrator, "Licensing Adapter" -> "General" -> "SystemType" !
If it is set to "DEVELOPMENT_MODE", verbose error messages are shown.
If it is undefined, proceed with the next step.
If it is set to something else, only exception IDs are shown. In this case the only chance is to search for this exception ID in the default traces.
2. If the system type is undefined, then in the Config Tool "Configurations" -> "webdynpro" -> "sap.com" -> "tcwddispwda" -> "Propertysheet default" -> "DevelopmentMode" is evaluated. If it is "true", verbose error messages are shown.
3. If verbose error messages are required but still the short version is shown, you probably face an error message that is not raised by Web Dynpro but by other components of the NetWeaver. In the Visual Administrator set "Properties" -> "HTTP Provider" -> "DetailedErrorResponse" to "true".
4. In addition to the error page shown in the browser or client, important messages - including error messages and stack traces - are written to the log and trace files, e.g. to the default traces usr\sap\<SID>\<instance>\j2ee\cluster\server<number>\log\defaulttrace.trc.<number>.
a) In some cases, when an exception ID is included in the error message, the detailed error message can easily be retrieved in the log file.
b) When no exception ID is given, you have to search for the detailed error message in the log specifying time stamp and/or user ID.
Always consider restarting the system after making changes on the settings.
It is not recommended to switch the "SystemType" to an inappropriate value just for viewing verbose error messages. The system type potentially affects framework, applications and licensing in an perhaps unintended way.
In the past there was no distinction between different system types regarding error messages. For security reasons this distiction has been introduced. It is not intended to show stack traces in non-development systems in the future. SAP does not provide workarounds or patches to enable such a behaviour again.

How do i pass parameters to a web dynpro application ?

Hi all,
how do i best possible pass (serverspecific) parameters to a web dynpro application ?
i wrote a web dynpro application that, among other things, sends an email and stores files on a server directory. Therefor i need parameters like e.g. "mailhost" or "directory".
The way i chose is to make a *.properties file. But from my point of view there are some disadvantages.
1) When i deploy the WD App to a new server, i have to edit the properties file before. I don't know how to do that. Do i have to edit the *.properties file again, before i make a new ear-Archive with NWDS ?
2) When the properties a wrong or change for a deployed app, i have to restart the J2EE Engine. Thats not convenient for a production server.
Is there a better way ?
Thanks
Andreas
(And I promise to return and reward the answers)

Hi Andreas,
You can't use something like portalapp.xml because this is not supported by webdynpro, but ... you can add this parameters at the end off the webdynpro address line. like http://<host>:<port>/webdynpro/dispatcher/local/<Webdynproproject>/<webdynproApplication>?host=yourhost
In your application you can get these variables:
String host = WDWebContextAdapter.getWebContextAdapter().getRequestParameter("host");
when you create a webdynpro iview you can specify the default value for the variables in the URL in the properties of the iview and i think you can personalize them later.
kind regards,
Joachim

How to execute a BI query/view from a web dynpro application?

Hi all,
I am trying to connect to a BI system from a Web Dynpro application. I have to execute a view/query and process the output in my application. Please guide me about how to establish the connection to the BI system from my web dynpro application and then execute the query/view.
I have tried executing/modelling the BI query/view using Visual Composer but I get an error saying 'QueryView Instantiation failed' when I try to drag the view/query on to the design board.
Please guide me and help me achieve this.
Thanks & Regards,
Kishan

Hi Kishan,
Define system for BI in portal and define JCo destination, then from WDJ application use can query BI.
Create the Technical System and connect with JCO Destinations
or
Connecting through the BI Connecters (ex: XMLA Connecter)
Refer below link:-
http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/60f35908-ecd4-2910-6c89-e75e1054d9d1?quicklink=index&overridelayout=true
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/60f35908-ecd4-2910-6c89-e75e1054d9d1
In this document you will get details related to connector and other admin activity.
Hope this may help you.
Deepak!!!

Web Dynpro Application Deployment need server restart?

Hi Everyone,
When deploying Web Dynpro application on production environment, do we need to restart the sap portal system and server?
I have this issue that when ever we deployed new develop Web Dynpro application with new Abap Function module we need to restart our Enterprise portal production server. Is this really necessary. Is there other way to deploy Web Dynpro application with new Abap function module without restarting the server.
Please help,
Michael Mondelo

Hi michel,
for example , assume you imported a RFC bapi_flights from r/3 to webdynpro dc , and both rfc requests and webdynpro application is deployed to the development server and then moved to quality server.
now you have done some changes in the rfc bapi_flights i mean change in the structure .
case 1 : now with out reimporting the change to webdynpro application and you move the request to the quality r/3, your application dumps . because the structure change is not incorporated at your webdynpro DC.
case 2 : you have re imported the rfc incorporating the changes to the web dynpro applicaiton dc, now with out moving the structure changes request to the quality r/3 and you deploy the webdynpro Dc having the changes to your quality EP , still the applicaiton dumps because your appliction refers to the rfc with out structure change in quality r/3.
case 3 : you have moved the abap request having the strucutre change and also the webdynpro development component where the changes are also incorporated , now on moving both , your application might dump , because the meta data cache might have been not updated with the new structure change in the quality ep server. so you have invalidate the cache in the JCos you have used to import the rfc. or else on restarting the EP server , the new structure change will be updated in the server.
most of the cases Invalidation of cache works and in some cases you have restart the server fo the changes to update.
Regards
Govardan Raj

How to change the Portal Password using a link from Web dynpro application

Hello Everybody,
I have a requirement to change the user password from a web dynpro application which is available on a mobile device. Firstly User will log into the portal through a mobile device and after getting authenticated user will be redirected to the mobile application. Within this mobile application there will be a link to change the login password(Portal login). Can somebody tell me how can i change the portal login password from a link available within the mobile application. Looking forward for a suitable reply.
Thanks to all,
Regards,
Saby.

Hi Maksim,
Thanks for your reply..but i would also like to know can we directly use the Change Password Iview "persoUserPassword" from the portal. Can i directly Pass the URL of this iview from the portal to a "Change Password" link in the web dynpro application, so that when the user click this link he should be able to see this Iview on his/her mobile device and should be able to change the password from there. But i dont know whether this iview will appear properly on the mobile device or we have to have a custom web dynpro application for this purpose...Please reply with a suitable answer.
Thanks in advance.
Regards,
Sarabjeet Singh.

How to make use of Portal service in the web dynpro application

hi
I have some portal service and how to use that in the web dynpro application.
and also what is the main diff between Portal Component and web dynpro application.
do we required portal to run web dynpro application.
thanks
mmukesh

Hi,
>> I have some portal service and how to use that in the web dynpro application.
Yes. U can use Portal service in webdynpro. Check the link given by subathra.
>> and also what is the main diff between Portal Component and web dynpro application
Portal Components are components designed to run in portal server while webdynpro application can run in J2EE WebAS.
>> do we required portal to run web dynpro application.
No for general cases. Just WebAS is sufficient to run webdynpro appl. But if u use portal service in ur webdynpro appl, then make sure both (portal service and webdynpro appl) run on same J2EE engine. That is mandatory.
Regards,
Vijai

How to send a mail through web dynpro application

Hi
How to send a mail through web dynpro application?
Thanks

Hi ,
Please post some more details about your query .
One way is to can use LinkToUrl UI element and in the reference property of the UI element , give it as mailto:mail addess
Thanks.
aditya.

How to destroy and restart Web Dynpro application by triggering an action?

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