Component Initialisation in web dynpro java

Hi all,
Iam new to web dynpro java.I am using two web dynpro component suppose A and B . Iam declaring the usage of B in A so that i can embedd one of the view in Component B. I want to use the context in Component B in Component A . which component is initialised first when we run the application ...
plz give a procedure to do this task......
Thanks and Regards
prasad

Hi Prasad,
This forum is about Visual Composer. You might want to try the [Web Dynpro|Web Dynpro Java; forum for this question.
Best regards,
Tal.

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Standard ALV Component in Web Dynpro Java

Hi,
Is there a standard Component available in Web Dynpro Java for ALV?
Regards,
Reema.

Thanks Armin for your reply.
What is the name of the component?
Regards,
Reema.

Adobe Flash Islands + Web Dynpro Java - CE 7.1 EHP1

Hi All,
I am currently working on flash islands in web dynpro java(CE 7.1 EHP1 Trail version). i have done some sample projects in Flex Builder and using the complied(Flex Complier 2.0) SWF file, i was able to do data transfer between web dynpro java and Flex component. every thing works fine till this but if i complie the flex project using Flex Complier 3.0, i am able to see the Flex component rendered in web dynpro java, but data transfer dosent work.
i have checked few thread in SDN and came to know to use WDFlashIsland30.SWC library to complie using FLex Builder 3.0.
i got this library and complie the Flex Component using Flex Complier 3.0 and placed this WDFlashIsland30.SWC in server also but the problem exists .... the complied Flex Component is getting reddered in web dynpro java but the data transfer is not happening ???
what could be problem ???
1. Is it enough to place the WDIslandLibrary30.swc libraby in CE 7.1 EHP1 version for data communication between Flex and Web Dynpro Java if so what could be the problem ?
2. Or do i need update the Server ???
Thanks and Regards,

HI,
your issue is completely independent from the server, it's a pure client problem. In general Web Dynpro Java does not care which Flex version you used to compile, as long as you used the right library.
If you did not change anything else it should work. Are you sure you replaced the used library and changed the source-code-compliance before recompiling?
Kind Regards,
Carl Heckmann

Web Dynpro Java : Failed to get deployable object part info for component

Currently we have a web dynpro java project which connects to the ABAP backend with Web Services. Everything seems fine, and when we transport to the production server via NWDI, we have the following error. Everytime we try to access the application , the error is occurred.
com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Failed to get deployable object part info for component com.sie.attachmentcomp.AttachmentComp
    at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.getComponentDeploymentDescription(ClientComponent.java:784)
    at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.createComponent(ClientComponent.java:934)
    at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.createComponent(ClientComponent.java:177)
    at com.sap.tc.webdynpro.progmodel.components.ComponentUsage.createComponentInternal(ComponentUsage.java:149)
    at com.sap.tc.webdynpro.progmodel.components.ComponentUsage.createComponent(ComponentUsage.java:116)
It is working properly in our development , and testing environment. Only production has this error. And one weird thing is that this particular error occurred only sometimes to some user. For example; I could not access to the application with this error yesterday but my friend can access. Today, I can access in the morning but my friend cannot. For another friend , Yesterday he can access by using IE but not by Firefox. But today Firefox is fine but not with IE. It seems crazy.
For more information, in our J2EE engine for the production server, we have 3 server nodes (clusters). And we are not sure it is the source of the problem. Is there any solution , and any way to know from the application that we are on which server?
We also go and check from the Content Administrator in Web Dynpro Console. Under our project name, in the list of Components, sometimes we can see AttachmentComp but sometimes not.
Please help us as our project is about to go-live next week.
Thanks,
Yu

Hi Meenge,
Please check below document for finding root cause for "Failed to start deployable object part info for <development component> and application <application name>"
http://help.sap.com/saphelp_nwce711core/helpdata/en/44/7716e1633a12d1e10000000a422035/frameset.htm
OR http://help.sap.com/saphelp_nw04/helpdata/EN/f4/1a1041a0f6f16fe10000000a1550b0/frameset.htm
Hope it helps
Regards
Arun

Logical Destinations in Web Dynpro Java

Hi!
Is it possible to access logical HTTP destinations maintained in SAP NetWeaver Administrator via Configuration Management -> Security ->Destinations in Web Dynpro Java source-code.
I would like to use such a destination to configure an URL target for a IWDFrame UI element.
Thank you very much in advance!
Regards,
Thomas

I found out that there is a [Destination Service API|http://help.sap.com/saphelp_nwce711/helpdata/en/8b/8e7dac1e661d44bf2a676fd3948cc6/content.htm] for this purpose. Unfortunatly I am still not able to provide the required components security.class and tc/sec/destinations/interface to the web dynpro component. Maintaining them via Project Properties -> Web Dynpro is not allowed any more, and I couldn't find them in the DC perspective to add them as DC dependency.
Has anybody got an idea where these two libraries have gone?
Regards,
Thomas
PS: The 7.0 procedure, which can be found in various posts, doesn't seem to work any more for CE 711.

Accessing ABAP Functions in Web Dynpro Java

Hi,
I am trynig to do "Accessing ABAP Functions in Web Dynpro Java" this application, (which is the example application which i got from www.sdn.sap.com) but everything is fine no error also while dyploying.
But it is not dysplaying the first page after i run the application i am getting plain web page ,without any content.
Can any body help me.
Regards,
H.V.Swathi

k.. now iam getting some error on page.
I have embeded the two view in to window.
But now after running the application i am getting connection error
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=jktr3 GROUP=SPACE R3NAME=R32 MSSERV=sapmsR32 PCS=1 ERROR Group SPACE not found TIME Fri Sep 26 15:05:59 2008 RELEASE 700 COMPONENT LG VERSION 5 RC -6 MODULE lgxx.c LINE 4288 DETAIL LgIGroupX COUNTER 1
    at com.sap.mw.jco.MiddlewareJRfc.generateJCoException(MiddlewareJRfc.java:457)
    at com.sap.mw.jco.MiddlewareJRfc$Client.connect(MiddlewareJRfc.java:989)
    at com.sap.mw.jco.JCO$Client.connect(JCO.java:3193)
    at com.sap.dictionary.runtime.mdi.DataProvider.<init>(DataProvider.java:90)
    at com.sap.dictionary.runtime.mdi.DataProvider.<init>(DataProvider.java:122)
    ... 61 more
Rgards,
H.V.Swathi

Deploying problem of web dynpro java application

Hi,
I have a web dynpro java application with no problem about deploying.
I copied this application with another name.
I tryed new application to deploy but sdm aborted with error.
Error
19.Tem.2011 10:22:25 /userOut/deploy (com.sap.ide.eclipse.sdm.threading.DeployThreadManager) [Thread[Deploy Thread,5,main]] ERROR:
[001]Deployment aborted
Settings
SDM host : vserver0202
SDM port : 52018
URL to deploy : file:/C:/Users/CEMIL~1.BOZ/AppData/Local/Temp/temp27456HF_PERS_RAPOR_BUTCE.ear
Result
=> deployment aborted : file:/C:/Users/CEMIL~1.BOZ/AppData/Local/Temp/temp27456HF_PERS_RAPOR_BUTCE.ear
Aborted: development component 'HF_PERS_RAPOR_BUTCE'/'local'/'LOKAL'/'0.2011.07.19.10.22.15'/'0':
Caught exception during application deployment from SAP J2EE Engine's deploy service:
java.rmi.RemoteException: Cannot deploy application local/HF_PERS_RAPOR_BUTCE.. Reason: Clusterwide exception: Failed to deploy application local/HF_PERS_RAPOR_BUTCE. Check causing exception for details (trace file). Hint: Are all referenced components deployed and available on the engine?; nested exception is: com.sap.engine.services.deploy.container.DeploymentException: Clusterwide exception: Failed to deploy application local/HF_PERS_RAPOR_BUTCE. Check causing exception for details (trace file). Hint: Are all referenced components deployed and available on the engine?
(message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.performAction(DeploymentActionTypes).REMEXC)
Deployment exception : The deployment of at least one item aborted

Hi,
Since the exception says "Are all referenced components deployed and available on the engine?"
Check wether any DC is used as a used DC in the webdynpro component which you are deploying.
If any used DC is available try to deploy that DC in the server and then deploy ur webdynpro application.
If all reference DC's are avialable in server, still if you get this error try to rename the component and reload+rebuild the project and deploy it.
Hope this helps you...
Regards,
Saleem Mohammad.

Any way to get HTTP header in web dynpro Java?

Is there any way to get HTTP header in web dynpro java? This method gives me the params. Is params same as header? It doesn't have any way to retrieve header data. I am on NW 7.0.19
WDProtocolAdapter.getProtocolAdapter().getRequestObject().getParameter("param");

Dear Faraz,
I'm afraid the code you've pasted is only to retrieve URL parameters.
Have you tried this document to see if it offers any good hint:
[http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/b0446f5c-fcb9-2910-e082-88becbe3ddc9]
Not sure if you can process the HTTP header with a WD4J.
An alternative could be to develop some Portal component in plain JAVA working as a proxy to call your WD4J afterwards.
That portal component would process your HTTP header and forward any parameter to your WD4J.
But this is me just guessing.
Kind Regards
/Ricardo

Caching in Web Dynpro Java

Hi Experts,
I am trying to develop a web dynpro for java application based on RFC model.
I am using an RFC that brings the Countries and States from the R/3 and will be used as dropdowns in the views controllers.
The question is:
I would like to cache the Countries and States in my web dynpro application. The idea is not to execute the model everytime. The model should be executed only once. I would like to store these countries and states in a local java dictionary or etc. and use them for UI element designing.
Is there any way to do this in Web Dynpro Java? I would like to follow a better approach to avoid performance problems.
I do not want to follow this approach: executing the model in the wdInit method of the controller. Executing this model in this method also causes performance problems. Because the model is brining approx 1540 records from R/3.
Please advice.

Hi All,
Thank you for the suggestions.
I am a beginer in wd java. i am starting with amit's suggestion.
Step 1: Execute RFC to fetch data preferably use doInt method for it.
Should I execute the method in wdInit of the view controller/component controller?
I defined a method "executePMPReadBAPI" in component controller.
public void executePMPReadBAPI( )
    //@@begin executePMPReadBAPI()
   try{
        wdContext.currentPMPDoctorReadElement().modelObject().execute();
        }catch (Exception e){
        logger.errorT("Error in executing PMP Read BAPI");
wdInit of View controller:
          IWDAttributeInfo countryInfo =
               wdContext.getNodeInfo().getAttribute(
                    wdContext.currentContextElement().COUNTRY);
          ISimpleTypeModifiable countryType =
               countryInfo.getModifiableSimpleType();
          IModifiableSimpleValueSet countryValueSet =
               countryType.getSVServices().getModifiableSimpleValueSet();
          for (int i = 0; i < wdContext.nodeCountries().size(); i++) {
               IWDNodeElement CountryNode =
                    wdContext.nodeCountries().getElementAt(i);
               String countryKey = (String) CountryNode.getAttributeValue("Land1");
               String countryText =
                    (String) CountryNode.getAttributeValue("Landx");
               countryValueSet.put(countryKey, countryText);
This coding is working, I am able to populate the dropdowns. The problem is the application is slow.
I am guessing this much coding is not necessary in the view conroller's wdInit method.
Why the binding approach like mentioned below is not working (model>Conroller>View)? How should I execute the RFC in the wdInit of the component controller? Is this possible?
wdInit of Component Controller: Below coding and proper binding is not sufficient to populate dropdowns? Please advice.
     Zhr_Ess_Address_Input ReadInput = new Zhr_Ess_Address_Input();
          wdContext.nodeZhr_Ess_Address_Input().bind(ReadInput);
          try {
               wdContext
                    .currentZhr_Ess_Address_InputElement()
                    .modelObject()
                    .execute();
               wdContext.nodeOutput().invalidate();
          } catch (Exception e) {
               logger.errorT("Error Reading the BAPI");

Synchronization in Web Dynpro JAVA

Hi All,
I have a Web Dynpro JAVA application, for which an iView has been created and is assigned to a role. Now I have the below requirement,
If two users tries to access this application at the same time then the second user has to get a message stating that "A user is already accessing this application please try later". Basically the thread concept. Is it possible to achieve this in Web Dynpro JAVA. If yes please provide me some pointers on how to achieve this.
Thanks & Regards,
Vishweshwara

Hi Vishweshwara,
Create the Custum table with UserID fields.
Create the RFC with UserID fields as input parameters and result field as export parameter.
Write the logic in RFC if Custum table contains any value in UserID Field then return error message like " This application is already using by <UserID>"
else
stor the values UserID and LoginStatus(which you are sending from Webdynpr java app) in custom table and return success message.
Create webdynpro java component and create two iview called main and info view
import the RFC in webdynpro java app and do the binding from model to component controller and component controller to view controller of main.
Write the following code in wdDoInit() method of main view to get the login userid and sending that to RFC.
String userID = null;
IWDClientUser clientUser = WDClientUser.getCurrentUser();
IUser User = clientUser.getSAPUser();
if (User != null)
try
IUserAccount[] acct = User.getUserAccounts();
if(acct[0] != null)
userID = acct[0].getLogonUid();
wdContext.current<RFCNodeName>Element().setUserID(userID);
catch(UMException e)
//Raise some error msg according to your scenario.
//code for calling the RFC
wdThis.wdGet<ComponentControllerName>().execute();
String msg = wdContext.current<OutputNodeName>Element().getResult();
if(msg != null && msg.lenght() !=0)
if(msg.equalsIgnoreCase("This application is already using by <UserID>")
wdThis.wdFirPlug<PlugName>();// code for naivigate from main view to info view
the navigation between main view to info view needs to defined in navigation moduler area.
if you foolow the above specified way u can achive your requerment.
Revert back if you any quaries.
Thanks & Regards,
bhargava.

Migrating from web dynpro java app nwds 7.0 to nwds 7.3

Hi,
is it possible to migrate web dynpro java app developed in nwds 7.0 to nwds 7.3 environment.
I tried but lots of problem.
Is there a blog?
Regards.

Cemil
its very much possible to migrate the component to 7,3 platform. SAP NWDS 7,3 provides a migration wizard to help with the migration, after that you need to do some manual adjustments, like changing the deprecated APIs, fixing JAR dependency etc etc..
Here is a guide on how to do it step by step
http://help.sap.com/saphelp_nw73/helpdata/en/e9/546e60777641509a5e0dc5cd05675b/frameset.htm
Hope this helps...

Problem in completing the TASK when using Web Dynpro Java and BPM

Hi,
I am using Web Dynpro Java and BPM.
i see my Web Dynpro View when i run the process.
Just that the task is not completing.
when i click on the Web Dynpro button to signal the completion of the event, nothing happens.
i have appropriately created events in both Component controller and Interface Controller and used the same in creating the Task.
a method in Component controller fires the event and a button click in the view calls this method.
i have successfully completed Donka Dimitrova's "SAP Netweaver Business Process Management-End-to-End Process Implementation Sample " but when i tried my own with slight modifications, it is not working !!!
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/d07f3e88-554f-2b10-3cbf-ab8afea51b9f
regards,
-Amol Gupta

Hi Amol,
The way you described the things, I dont see any problems. Just to make sure that you are triggering the right event that you mapped as completion event for the task, try to cross check once again and see if the correct event is getting triggered. Also try to put some messages for debugging to see till where the control goes.
Regards,
Arafat

IView Personalization (Web Dynpro Java) for Anonymous User

Hello All,
Is it possible for anonymous user to see iView personalization (Web Dynpro Java) when personalized by an administrator? What I did was create new role and iView making available to anonymous user. This work fine meaning I can view iView using URL http://<servername>:<port>/irj/portal/anonymous . But the personalization I made to iView using administrator mode launching iView in preview mode and then using personalization dialog by choosing Ctrl and secondary mouse button to personalize is not showing. Iu2019m currently on EP7 SP15 and using iView type Web Dynpro Java for the development component sap.com/tcsecumewdenduser application name LogonHelpApp.
Any help is very much appreciated.
Many Thanks,
Gary

Hello Michael,
Yes, the Web Dynpro for Java Personalization is working perfect for non-anonymous users. The issue is when I view same iView using anonymous URL http://<servername>:<port>/irj/portal/anonymous the personalization is not showing just defaults back to the original Web Dynpro Java application settings. The iView that I created and personalized is the new Logon Help Dynpro Java application (LogonHelpApp). Is there some permissions that restricts anonymous user to view personalization?
Koti Reddy Iu2019m using the Web Dynpro for Java Administrator Personalization. Here is the documentation [http://help.sap.com/saphelp_nw70/helpdata/en/42/ed3ce7f8593eebe10000000a1553f7/frameset.htm |http://help.sap.com/saphelp_nw70/helpdata/en/42/ed3ce7f8593eebe10000000a1553f7/frameset.htm ]
Thank You for your help,
Gary

Problem Web Dynpro Java applications using JasperReports

Hello all,
We have followed the footsteps of these blogs but we can not make it work.
Part I --> Part-I: Print Web Dynpro Java applications using JasperReports
Part II --> Part-II: Print Web Dynpro Java applications using JasperReports
Part III --> Part-III: Print Web Dynpro Java applications using JasperReports
Details system: 7.02 SP3
We believe that the problem is in the library, because it finds them.
1) We created project as a DC external library with *.jars
2) Public part DC external library.
3) Add public part of DC Library into new project DC WebDynpro Java.
4) Development Component -> Build is OK
5) Development Component -> Deploy is OK
6) Test app ERROR.
When we run the application shows the error:
The initial exception that caused the request to fail, was:
   java.lang.NoClassDefFoundError: net/sf/jasperreports/engine/JRDataSource
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:141)
    at com.unisys.tmb.View01.onActiongenerarPDF(View01.java:161)
    at com.unisys.tmb.wdp.InternalView01.wdInvokeEventHandler(InternalView01.java:140)
    at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:87)
    ... 28 more
See full exception chain for details.
Regards,
Luis.

Hello John,
Thanks for the link. We have performed the steps in this blog:
1) Create DC Project "External Library" with name js/jars:
- Add *.jars in folder Libraries.[Screenshot Libraries|http://img846.imageshack.us/img846/8395/jsjars.jpg]
- Add archives (*.jar) to public part with name ExternalLib. Which option to choose?
a- Provides an API for developing/compiling other DCs (Option chosen)
b- Can be packaged into other build results (eg SDAs)
- Development Component -> Build
Step 1 is OK.
2) Create "J2EE Server Component / Library" DC with name js/lib:
- Add Used DC -> public part project ExternalLibrary -> "ExternalLib"
- Specify both build time and run-time dependency here and strong.
- Generated SDA file in <var>gen/default/deploy</var> How do we check that it contains <var>js.jar</var>?
- folder gen/default/plublic/defLib/lib/java then you meet *.jars files again. is OK.
- Development Component -> Deploy.
- Go to Visual Administrator. We found the library js/lib, but has no associated *. jar. It is the problem.[Screenshot Visual Administrator|http://img542.imageshack.us/img542/5537/visualadminlib.jpg]
3) Create "WebDynpro" DC with name pdf_jasper
- Add used DC (defLib) to WebDynpro DC with option "Build time".
- WebDynpro References -> Library references --> add <var>jslib
- Deploy
- Run error: java.lang.NoClassDefFoundError: net/sf/jasperreports/engine/JRDataSource
Regards,
Luis.

Access Web Dynpro Java application through direct URL

Hi Guys,
we have a requirement that there is a link in web dynpro abap screen, click on it will open a new ie window running web dynpro java application, so what i did is i have given direct url link for that web dynpro java application:
as this:
https://servername:50001/webdynpro/dispatcher/sap.com/ess~lea/TeamView
but after i clicked on this url, it pop up 1 window, after i entered id & passoword, it is showing this wd java appl, but there is 1 grey image on top of the view & "welcome xxxx"; below that is the actual view from wd java.
the layout is :
grey image----
welcome xxxxxxxx
Teamview
actual ivew
how to remove the grey image & the "welcome xxx"? it looks like masthead but we dun need it.
thanks

Hi Feng,
Actually what you are seeing using the application URL and after giving the credentials on Portal is a portal screen which carries the theme as well. Therefore, you will be able to see the masthead with header and Portal User Name. So, use the URL generated by preview of a web dynpro iView in your component to avoid the masthead.
Regards,
Tushar Sinha,
Infosys,
Hyderabad

Component Initialisation in web dynpro java

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