Exception in executing External Service type Callable Object

Hi
I was trying to test a callable object of type external service. I have used the bapi BAPI_FLIGHT_GETDETAIL. But while executing I was getting exception like
java.lang.IndexOutOfBoundsException: Index: 5, Size: 3
at java.util.ArrayList.add(ArrayList.java:371)at com.sap.tc.webdynpro.progmodel.context.Node$ElementList.addElementSilently(Node.java:1991)at com.sap.tc.webdynpro.progmodel.context.Node$ElementList.addElement(Node.java:2003)at com.sap.tc.webdynpro.progmodel.context.Node.doAddElement(Node.java:676)at com.sap.tc.webdynpro.progmodel.context.Node.addElement(Node.java:644)
Anybody knows the reason?
Cheers
Sudip

Hii
I forgot to mention that if the RFC has a structure as output parameter it doesnt get displayed but if the parameter in RFC is string value it works fine.Please Help Urgently
Regards
Ishita

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External Service as Callable Object

Hii Frens,
I have created an external service as a callable object.It executes a BAPI but when i test the service it doesnt give the output. A username is the input for the BAPI and output is a structure.But am not getting the output in the structure.I want to use this service in prefilling a Callable Object in Guided Procedure.Please tell me where am i goin wrong.
Regards
Ishita

Hii
I forgot to mention that if the RFC has a structure as output parameter it doesnt get displayed but if the parameter in RFC is string value it works fine.Please Help Urgently
Regards
Ishita

Exposing Web Services as Callable Objects

Hello!
I have SAP NetWeaver 04s SP7. How can I expose Web Services as Callable Objects?
According to "Exposing Web Services as Callable Objects" (http://help.sap.com/saphelp_nw2004s/helpdata/en/44/4758351fcb1193e10000000a155369/frameset.htm), I should start with choosing type of CO "Service -> Web Service".
Actually, I haven't this entry in CO type list!
According to integrate Web Services with GP, this type appeared in SP8. What are the alternatives in SP7?
"Background execution" and "External service" seem to be the best candidates...
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Thanx in advance!

Hello, Jan!
I have SAP NWDS 7.0.07, and I cannot find there an option to create a CAF project. I can create Web service, EJB, Web DynPro, and something else - but not a CAF project. In documentation I did not find the connection points between NWDS and External Services, except some plug-ins.
Maybe I've misunderstood you, sorry - I'm a newbie in SAP
Actually, I've made a simple EJB, created a Web service from it, and deployed the WS to portal. Maybe, EJB instead of Web service can be somehow used in CAF?
I've tried to create a CO of type Composite Application Service, but there was necessary to configure endpoint aliases. I've read the manual "Configuring Endpoint Aliases", but didn't succeed to make one for EJB remote call... I've defined the name, URL (http://<host_of_portal>:<portal_port>), user and pwd - but I've got an exception when tried to use the created alias:
com.sap.caf.core.gp.servicelocator.exception.MetaModelBrowserException: Exception while trying to get InitialContext. at com.sap.caf.core.gp.servicelocator.CAFMetaModelBrowser.getAllApplications(CAFMetaModelBrowser.java:77) at com.sap.caf.core.gp.ui.backgroundco.admin.VSelect.browseCAFCore(VSelect.java:305) at com.sap.caf.core.gp.ui.backgroundco.admin.VSelect.onActionSelectEptAlias(VSelect.java:750) at com.sap.caf.core.gp.ui.backgroundco.admin.wdp.InternalVSelect.wdInvokeEventHandler(InternalVSelect.java:287) at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:87) at com.sap.tc.webdynpro.progmodel.controller.Action.fire(Action.java:67) at
Maybe, the easiest way is to upgrade the versions of SAP and NWDS?
Are there some manuals that could provide me some help about:
1) creating CAS from the deployed Web service (from its creation in NWDS till its use in CAF, step-by-step)
2) binding Web Dynpro apps and Web services, using CAF and GP.
Or maybe I should attend SAP courses?
I have SAP NetWeaver 04s SP7 and NWDS ver. 7.0.07.
Sorry for the messy post, I did my best
Message was edited by:
Kirill Shepitko

Canu0092t use web service as Callable Object

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Thanks in advance
Robert Herbert

Hi David,
Thank you very much, you solved my problem.
Curious usability issue!!
Best regards,
Robert

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Hi everyone!
Is it possible to create a form (the callable object) in Guided Procedures which takes its data from an external database? For example, say I want to create a callable object in Guided Procedures which picks up user information from an MS Access database? If its possible, could anyone provide a hint as to what kind of callable object I need to declare and how I connect to the external database?
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Sameer,
Its possible to fetch data from an external database.For instance, you could utilize a 'Webdynpro Callable Object' for the same.
You can very well establish a connection to the database using the regular JDBC connection APIs.
Once the connection is established you can read/write data from/to the database.
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For instance , you can have an Employee database with employee number as the primary key.
Now you can have this employee number as the 'input parameter' for the Webdynpro Callable object and rest of the details
like name, age , location you can have them as 'output parameters' for the CO.
Now when you execute this CO , it'll expect a 'valid' employee number as input,it'll go to the execute() method of the CO ,
make a DB connection,execute your 'select' query and give you the resultset.
You can loop thru the resultset to set your Output parameters.
A simple JDBC connection code for SQL Server DB looks like this:
public String makeDBConnection()
          try
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               String strPassword = "db_user_pwd";
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               String strDB_Inst= "db_instance";
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               ResultSet resultSet = null;
               DriverManager.registerDriver(new com.microsoft.jdbc.sqlserver.SQLServerDriver());
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               resultSet = stmtQuery.executeQuery(strQuery);
          catch(SQLException e)
               e.printStackTrace();
Hope this helps.
Pls reward if helpful.
Thanks,
Karambir Singh

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Hi everybody,
is it possible to use an Web Service as an Background Callable Object? And if it is possible, how can I do it?
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Hi Stefan,
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"Unable to create web dynpro callable object implementation" - GP error

Good day.
I've created a GP process and transported it to the test system. But when I try to start the process I get an error on the screen: Error while processing the item; it cannot be displayed. When I look to the logs I can see the following exception:
Unable to create web dynpro callable object implementation.
java.lang.Exception
at com.sap.caf.eu.gp.ui.co.exec.wd.COExecWD.execute(COExecWD.java:294)
at com.sap.caf.eu.gp.ui.co.exec.wd.wdp.InternalCOExecWD.execute(InternalCOExecWD.java:171)
at com.sap.caf.eu.gp.ui.co.exec.wd.COExecWDInterface.execute(COExecWDInterface.java:122)
at com.sap.caf.eu.gp.ui.co.exec.wd.wdp.InternalCOExecWDInterface.execute(InternalCOExecWDInterface.java:134)
at com.sap.caf.eu.gp.ui.co.exec.wd.wdp.InternalCOExecWDInterface$External.execute(InternalCOExecWDInterface.java:249)
at com.sap.caf.eu.gp.ui.act.container.VContainer.onPlugFromDispatcher(VContainer.java:391)
at com.sap.caf.eu.gp.ui.act.container.wdp.InternalVContainer.wdInvokeEventHandler(InternalVContainer.java:167)
at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:87)
at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.navigate(ClientApplication.java:826)
at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.navigate(ClientComponent.java:881)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.doNavigation(WindowPhaseModel.java:498)
at com.sap.tc.webdynpro.clientserver.window.WindowPhaseModel.processRequest(WindowPhaseModel.java:144)
at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.processRequest(WebDynproWindow.java:335)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:143)
at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:321)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingPortal(ClientSession.java:733)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:668)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:250)
at com.sap.tc.webdynpro.clientserver.session.RequestManager.doProcessing(RequestManager.java:149)
at com.sap.tc.webdynpro.clientserver.session.core.ApplicationHandle.doProcessing(ApplicationHandle.java:73)
at com.sap.tc.webdynpro.portal.pb.impl.AbstractApplicationProxy.sendDataAndProcessActionInternal(AbstractApplicationProxy.java:860)
at com.sap.tc.webdynpro.portal.pb.impl.AbstractApplicationProxy.create(AbstractApplicationProxy.java:220)
at com.sap.portal.pb.PageBuilder.updateApplications(PageBuilder.java:1289)
at com.sap.portal.pb.PageBuilder.createPage(PageBuilder.java:356)
at com.sap.portal.pb.PageBuilder.init(PageBuilder.java:549)
at com.sap.portal.pb.PageBuilder.wdDoApplicationStateChange(PageBuilder.java:303)
at com.sap.portal.pb.wdp.InternalPageBuilder.wdDoApplicationStateChange(InternalPageBuilder.java:197)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.sap.tc.webdynpro.progmodel.generation.DelegatingComponent.doApplicationStateChange(DelegatingComponent.java:139)
at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.doApplicationStateChange(ClientComponent.java:667)
at com.sap.tc.webdynpro.clientserver.cal.ClientApplication.doApplicationStateChange(ClientApplication.java:537)
at com.sap.tc.webdynpro.clientserver.cal.AbstractClient.executeTasks(AbstractClient.java:120)
at com.sap.tc.webdynpro.clientserver.session.ApplicationSession.doProcessing(ApplicationSession.java:321)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessingStandalone(ClientSession.java:713)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doApplicationProcessing(ClientSession.java:666)
at com.sap.tc.webdynpro.clientserver.session.ClientSession.doProcessing(ClientSession.java:250)
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.doPost(DispatcherServlet.java:53)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
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:386)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:364)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:1039)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:265)
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:104)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:176)
It doesn't make any sense to me... I would appreciate for any help.

Hello
We are facing exact similar issue when we checked the logs.
Could you help us as we are new to GP.
What steps you followed to resolve this error.
Regards
aparna

SP 2013 ECT - Created an External Content Type in SPD But Not Appearing in BCS

Hello Community,
I have created an External Content Type in SP Designer 2013, and the connection and operations all seem to work fine, but the ECT List throws an access error, and when I check the BCS Service Application the ECT doesn't even appear in the list. Has
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Tom Molskow - Senior SharePoint Architect - Microsoft Community Contributor 2011 and 2012 Award -
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Hi Tom,
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Please check if it is related to the permission issue by using SharePoint Farm Administrator account to create this external content type.
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http://www.c-sharpcorner.com/UploadFile/anavijai/create-external-content-type-using-sharepoint-designer-2013/
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Felipe,
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Problem in creating a callable object of type Business Logic

Hi SDN,
I am trying to create a callable object of type Business Logic in CE.
When I give all information and click Next, I get this error message.
Error while loading configuration dialog: Failed to create delegate for component com.sap.caf.eu.gp.ui.co.CExpConfig. (Hint: Is the corresponding DC deployed correctly? Does the DC contain the component?)
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Hi.
I'm having the same problem as Senthil in NW2004s SP15 with my application service and methods not showing up in the Callable Object wizard for Composite Application Services after I choose the Endpoint. The only application name that shows up in the wizard is caf.tc, and the only service names that show up for it are LDDataAccessor, Metadata, and PropPermissionService.
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I'm not sure if this is relevant, but I noticed that the generated Java code does not create any remote EJB interfaces (only home and local interfaces were generated).
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I'm wondering if the credentials specified in the endpoint require any special roles or privileges.
Senthil, do any of these additional descriptions apply to you as well?
Edited by: Ric Leeds on Jun 20, 2008 4:37 PM

Error in creating Callable object of type Portal iView

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Hi,
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Hi Aneel,
You can try the following:
e.g.
for j = 1 to ActiveCell.SpecialCells(11).Column
oParam4.Rows.Add
if j=1 then oParam4.Value(j, "NAME") = ActiveSheet.Cells(1,j).Value
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Date type attribute in web dynpro callable object

Hi all,
I am creating a callable object with date type attribute as input parameter in a web dynpro callable object.
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Technical Exception:
Web dynpro Component cannot be created.
And when i am changing date type as java.util.date then I am not able to asssign that date attribute in my view layout.
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Hi Ritu ,
u have to convert the util date to sql date in the execute method .
do it as showm below in Execute method in the component Controller :
let the Attribute be planEndDate in the Context:
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Hi All,
right now we are developing our first eSOA Composite Application with CE and I have some questions regarding Business Objects, the import of external services and the development of application services.
As I understood there are two ways to provide business functionality for composite applications:
a. Import backend functionality as an external service (e.g. BAPI, RFC) at the CAF, build the application service which can be used as a callable object for UIs or the GPs
b. Develop a local Business Object (in CAF) providing the business logic, create the application service which again can be used as a callable object. Furthermore the application service can be exposed as a Web Service (external service).
My questions:
1. When is it appropriate to to import external services in stead of developing local BOs?
2. Under what conditions is it advisable to (solely) develop local BOs?
3. What are the advantages / disadvantages regarding the reusability of the services (in option a and b)?
Note: We are developing on NetWeaver 2004s.
Please let me know, if you need more information to answer the questions!
Thanks for your advice in advance,
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Ivonne

Hi Ivonne,
first of all, the CAF Business Objects (BOs) itself don't contain any business logic, they're basically just local database tables (with some CRUD services on top).
Business logic is implemented in Application Services (AS).
Now, regarding local BO's vs. external services, it depends on your use case. If the data is already available somewhere in your backend system it makes sense to use external services. For instance you wouldn't want to store business partners all over different composites. For data that is specific to your composite (in particular configuration, customizing etc.) and not likely to be reused by other applications you should use local BOs.
Accessing local BO's is also much faster than calling external services.
You can do reuse in both scenarios, since the CAF services can be exposed as web services.
Regards,
Christian
Edited by: Christian Loos on Apr 8, 2008 6:11 PM

Exception in executing External Service type Callable Object

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