Development component for UME usage in WebDynpro

Hi,
We develop several WebDynpros using the UserMappingService. Those WebDynpros are checked into the NWDI. Local builds are fine since we copied the relevant jar files into the project and referenced them in the classpath.
Builds in the NWDI fail because there the jar files for UME (com.sap.portal.usermapping.jar, com.sap.portal.usermappingapi.jar) are missing. Is there a development component we can reference so that the build infrastructure is able to find the jar files when trying to build the project?
Or am i supposed to put those jars into a library development component? This would us make prone to changes in the API since we keep our servers and developer machines at the same SPS.
kind regards
Dirk
PS: we use EP 6 SPS 18 and NWDS 2.0.18 for development and production.

Hi,
If u r using DC for ur development then the jar file should not be added in the build path because it will be removed at build time.
For adding ur libraries u should be using an external library component. Expose this library file as public part. This is only a buildable component.
For deploying this library in the server u should create a new J2EE library component and in this used DC add the exposed public part. Deploy this application.
Finally in the Main component used DC add the External library component and in the references of ur project give the j2ee library component.
For reference see valery's blog
<a href="/people/valery.silaev/blog/2005/09/14/a-bit-of-impractical-scripting-for-web-dynpro External Jars in DC</a>
- Hope it helps,
Nagarajan.

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Hi All,
Is there any simple tutorial, example to import java bean model in webdynpro development component.
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it really helps if you can provide simple EJB as a development component with details how to create a public part and using this bean as java bean model in Webdynpro development component.
what are the steps to be followed with precautions
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Murali

Hi,
[Using the Java Bean Model in Web Dynpro|https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/4072c0d0-c21e-2b10-ab84-e2c183d355de]
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you will get more if you search in the forum.
more help on EJB's
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http://help.sap.com/saphelp_nw70/helpdata/EN/19/f9bc3d8af79633e10000000a11405a/frameset.htm
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/70929198-0d36-2b10-04b8-84d90fa3df9c
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/1f5f3366-0401-0010-d6b0-e85a49e93a5c
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I tried the following steps.
1. File - import - Multiple Existing project into workspace.
2. Imported the DC.
I have already added all the Gp jarfiles. But after importing, and rebuilding the project, it gives me only webdynpro and components,views.. It is not showing me as a normal webdynpro project. It is not showing me the GP Api's, the "USED DC's". which i created in the other project.
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Hi,
Take a look at this [thread|/thread/119966 [original link is broken];
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No prefix found for development component

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I do not fully understand the concept of Namespace prefixes.
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When trying to "checkin" the initial activity which contains the newly created DC, the following error is thrown:
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Appropriate development component prefix should be configured in SLD
(Restart IDE after reconfiguring SLD).;
No prefix found for development component "asdgsdg/ejbmodule".
Appropriate development component prefix should be configured in SLD
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Appropriate development component prefix should be configured in SLD
(Restart IDE after reconfiguring SLD).
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Appropriate development component prefix should be configured in SLD
(Restart IDE after reconfiguring SLD).;
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Appropriate development component prefix should be configured in SLD
(Restart IDE after reconfiguring SLD). initial
Any idea? Help very much appreciated.
Thanks,
Kai
(NWDI 7.0, NWDS 7.1 SP07, NW CE 7.1 EHP1 System)

Kai,
check this link on name prefixes
http://help.sap.com/saphelp_nw70/helpdata/EN/df/2761930dd9b74a85198f9e48850046/frameset.htm
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Bala Duvvuri

Webdynpro Development Component project error

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Hello
i tried to create development component project through NWDS which is expected to be used as CallableObject but it gave following exception
Plugin name: Web Dynpro Archive Builder
Plugin ID: com.sap.ide.webdynpro.archivebuilder
Class: com.sap.ide.webdynpro.archivebuilder.project.WebDynproDevelopmentComponentProjectWizard
Method: createProject(String, IPath, IProgressMonitor)
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Exception: org.eclipse.core.internal.resources.ResourceException: Invalid project description in plugin name
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Rajeev

Hi
sorry for that
see the below link ,it will be helpful for u.
Re: development component
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Hazrath

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I am importing the application as follows:
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2) I imported this application into a Development Component Project. Here it fails to recognize the jar file that is required. Even if I put the jar file in its build path, while building, the jar file gets removed.It says java build path errors.
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Mayuri

Using JPA Entity-Objects defined in other EJB-Development Component

Hello Community,
I'm working on a Java-Application on NW CE 7.1, using JEE5 Beans in the Business-Logic-Layer and WebDynpro/Java in the UI-Layer.
I designed a Bean for working with data, stored in a database-table of the system-database.
For that addtionally i created a class, representing the Entity-Object, in the same Development-Component of Type EJB 3.0.
It looks like this:
@NamedQueries ({
     @NamedQuery (name="findAllSdCust", query="SELECT c from SdCust c ORDER BY c.kdnr"),
     @NamedQuery (name="findSdCustByKdnr", query="SELECT c from SdCust c WHERE c.kdnr = :kdnr"),
     @NamedQuery (name="findSdCustByIlnnr", query="SELECT c from SdCust c WHERE c.ilnnr = :ilnnr")
@Entity
@Table(name="ZKALL_SD_CUST")
public class SdCust implements Serializable {
     @Id
     @TableGenerator (name="idGenerator", table="ZKALL_ID_GEN", pkColumnName="GEN_KEY", valueColumnName="GEN_VALUE", initialValue=100)
     @GeneratedValue (strategy=GenerationType.TABLE, generator="idGenerator")
     private long id;
     private String name;
     private String lname;
     private String kdnr;
     private String ilnnr;
     private long connid;
     private long cnt;
     @Version
     private long version;
      Constructor, Getter and Setter methods follow here
The corresponding bean looks like this
@Stateless(name="SdCustBean")
public class SdCustBean implements SdCustLocal {
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     private EntityManager em;
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          SdCust result = new SdCust();
          // List<Manufacturer> resultList = new ArrayList<Manufacturer>();
          Query myQuery = em.createNamedQuery("findSdCustByKdnr");
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          result = (SdCust) myQuery.getSingleResult();
          return result;
     public void setEM (EntityManager iem)
          em = iem;
       // other methods .....
After that i created a new Development-Component of Enterprise Application-Type and added above DC to this EAR-DC. I also supplied the nessecary descriptor-files/Enries in EJB-DC and EAR-DC.
When now using this bean from WebDynpro with the Web-Dypro EJB-Model-Import everything works fine.
The bean returns the desired object(s).
But now i created a new DC of type EBJ 3.0
This DC contains a Message Driven Bean. That MDB is a Job-Bean which i want to schedule. That Bean uses JRA to connect to an SAP-Abap-System to read some Data and should use JPA to insert/upate/delete the read data in the Database. This should work as a simple replication for my application.
I assigned that EJB-DC containing the MDB to a new EAR-DC together with job-definition-xml and the neccessary entries in deployment-descriptors.
After deploying i see the corresponding job-defition in the NW scheduler using the administrator-views.
I'm also able to schedule the job and it executes fine. Connecting to SAP-Abap System also works fine using JRA.
But JPA does not work!!!!!
I created an dependency from my EAR-DC containing the Job EJB-DC and to the EJB-DC containing the Entity-Class.
I tried three diferent things to get i running, but all of them failed.
1.)
The part looks like:
public class MasterDataReplicateJobBean extends MDBJobImplementation implements MessageListener
@EJB SdCustBean mybean;
   public void onJob(JobContext ctx) throws Exception {
        SdCust sdCust = mybean.getSdCustByKdnr (mykdnr);
Compiles fine. But this fails because the Data is stored in the system-database. The exception says, that i have to use a datasource which supports 2-Phase commit. I know, that i could possibly solve this problem by annotation the Method getSdCustByKdnr with the Annotation for the Transaction-Manager to use REQUIRES_NEW Transaction. But i dont want to generally annotate my methods this way.
2.)
This part looks like this
public class MasterDataReplicateJobBean extends MDBJobImplementation implements MessageListener
@PersistenceContext (unitName="xyz")
private EntityManager em;
   public void onJob(JobContext ctx) throws Exception {
     SdCust cust = new SdCust();
     Query myQuery = em.createQuery("SELECT c from SdCust c WHERE c.kdnr = :kdnr");
     myQuery.setParameter("kdnr", dbkdnr);
     cust = (SdCust) myQuery.getSingleResult();
This also results in a runtime-exception because the entity-Manager cant resolve SdCust from the Query as an Object. The Exception is:
java.lang.IllegalArgumentException: line 1: Abstract Schema Type 'SdCust' doesn't exist
SELECT c from SdCust c WHERE c.kdnr = :kdnr
3.) and last try so far:
public class MasterDataReplicateJobBean extends MDBJobImplementation implements MessageListener
@PersistenceContext (unitName="xyz")
private EntityManager em;
   public void onJob(JobContext ctx) throws Exception {
     SdCustBean custBean = new SdCustBean();
     custBean.setEM(em);
     SdCust cust = custBean.getSdCustByKdnr(kdnr);
In this example i use the Bean from the beginning not as a bean itself but as a normal class. that class has an addtional Method setEM to set the Entity-Manager (which is injected when using the class as a bean)
In that way i got the exception, that the named Query "findSdCustByKdnr" cannot be found by the entity-manager.
It seems to me, that i can access the class, but that all annotations belonging to JPA for that class are not recognized.
Does anybody can give me a hint to solve this problem? Did i forgot something important?
best regards
matthias hayk
Edited by: Matthias Hayk on Feb 5, 2009 9:38 AM

I was already on wright trace.
My class "SdCust" was not recognized by the Entity-Manager as an Entity-Class.
This relies on the storage of the entity-class and where the Entity-Manager looks for entity-classes.
By default it seems to look for all classes in the same jar file. thats the reason why everything works fine when the using bean and the entity-class are in the same project.
In my last case, the using bean is in another development-component and so also in anohter jar file. in this case the entity-manager must be told where to find entity-classes.
this is done in the persistence.xml file.
i added the line
<jar-file>xxx.yyy.com~mdata_beans.jar</jar-file>
underneath the <persistence-unit>-tag.
This works.
regards
Matthias Hayk

Requirement to maintain select-options for multiple fileds in webdynpro aba

Hello Gurus,
We have a requirement to maintain select-options for multiple fileds in webdynpro abap.
now we are able to create select-options for a single field using wdr_select_options componet usage.
how can we achive this select-options feature for multiple fields.
Could anyone please suggest solutions?
and if possible send me the sample code for this requirement.
Thanks in Advance for your replies.
Regards,
Shyam

Hi,
Nothing different for more fields, same. some declaration changes.
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TYPES:
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    S_KUNNR TYPE RANGE OF J_3RS_KUNNR,
    S_VKORG TYPE RANGE OF VKORG_RAN,
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    ty_s_date TYPE LINE OF ty_r_date.
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DATA lo_cmp_usage TYPE REF TO if_wd_component_usage.
lo_cmp_usage =   wd_this->wd_cpuse_cmp_sel_opt( ).
IF lo_cmp_usage->has_active_component( ) IS INITIAL.
lo_cmp_usage->create_component( ).
ENDIF.
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DATA
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DATA:
    lr_field TYPE REF TO data,
    ls_date TYPE ty_s_date.
FIELD-SYMBOLS:
    <fs_field> TYPE ANY,
    <fs_range> TYPE INDEX TABLE.
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lr_cmp_usage = wd_this->wd_cpuse_cmp_sel_opt( ).
IF lr_cmp_usage->has_active_component( ) IS INITIAL.
    lr_cmp_usage->create_component( ).
ENDIF.
lo_interfacecontroller =   wd_this->wd_cpifc_cmp_sel_opt( ).
wd_this->m_sel_opt = lo_interfacecontroller->init_selection_screen( ).
data : vhelp type wdy_md_value_help_mode_enum .
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wd_this->m_sel_opt1 = wd_this->wd_cpifc_cmp_sel_opt( ).
wd_this->m_helper = wd_this->m_sel_opt1->init_selection_screen( ).
* Hide the standard select-options components.
wd_this->m_helper->set_global_options(
    i_display_btn_cancel = abap_false
    i_display_btn_check = abap_false
    i_display_btn_reset = abap_false
    i_display_btn_execute = abap_false
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wd_this->m_helper->add_selection_field(
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*    i_within_block = `BL01`
    it_result      = lr_field ).
FREE lr_field.
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*    i_within_block = `BL01`
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Go through this..
http://wiki.sdn.sap.com/wiki/display/Snippets/WebDynproABAP-Complexselect-optionscomponent+usages
Cheers,
Kris.

Comparison between WebDynpro for ABAP vs. WebDynpro for Java ??

Hi,
Can someone tell me when should we go for WebDynpro for ABAP and when WebDynpro for Java. Is there any link where SAP recommends the one for the other.
Thanks in advance
Regards
Mukesh

Hi Mukesh,
Both are having its own strengths!! )
I think it all depends on your project requirement and the availabel resources.
If the developer is good in OOPs ABAP then he must go for Web Dynpro ABAP. But if anyone is good in JAVA then that person should go for Web Dynpro JAVA.
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1] Webdynpro Java
Supports,
webservice
RFC Models
Accessing Portal information in Java
Easy sending E-mail
Strictly follows MVC architecture which seperate Business logic and Process flow.
Webdynpro Java is webbased programming model to develop SAP Applications.
Easy to learn
Easy to integrate in Enter prise portals.
Dynanamic Programming
*Easy access to R/3 Via RFC technology (Models)
2] Web Dynpro ABAP
As the name suggests Web Dynpro for ABAP uses exactly the same meta model as its cousin Web Dynpro for Java. A Web Dynpro component, a Web Dynpro view, a Web Dynpro model, a Web Dynpro controller have the same semantics both for ABAP and Java. The main difference is the designtime environment, the development infrastructure and the runtime environment.
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Last not least the execution platform is the ABAP server that produces application content ready to be integrated in the NetWeaver Portal seamlessly. Features like portal eventing can be used between applications written in ABAP or applications developed with Java.
Hope this helps and solve your Problem
Cheers,
Darshna.

SAP EU software component for Web Dynpro SP9

Hi all,
I've followed the tutorial on how to create a Web Dynpro Callable object and couldn't go further because I couldn't find the libraries needed in the Local DC (caf/eu/gp/api/wd) api's.
I've found the Blog from Andre Truong on how to retrieve this API's in your Local Development Component projects (SP7).
/people/andre.truong/blog/2006/06/26/working-with-the-apis-of-caf-guided-procedures-nwdi-or-local-development
Unfortunally this is only working for SP7 (And maybe SP8) but not for SP9.
In the blog Andre mentioned that this problem might be resolved with SP9 because the API's come as default with the IDE.
This appears not to be the case for me.
Does anyone know how to resolve this problem?
PS I also read the following thread and the reply from Tomas Kuba but that seems to be a difficult and dirty way to do it?
Re: Guided procedures & WebDynpro (SAP-EU software component)
Thanks in advance!

Ok, seems to work just fine for SP 9 also.
Only the folders eu and gp don't excists. Just create them and extract the zip files.
Great blog thanks!
Message was edited by:
B. van Prooijen

Copying a project into development component project

hiii,
I have a webdynpro project called DP_OrderEntry developed in NWDS 7.0.9. I need to copy it into development component dc_OrderEntry in NWDS 7.0.14.
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Can any error can crop up due to the difference in the versions?
Regards,
parama laha.

hii,
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Error The project was not built since its classpath is incomplete. Cannot find the class file for com.sap.security.api.IUser. Fix the classpath then try rebuilding this project. LocalDevelopmentdc_oentrlntinfotech.com
Is this because the project i copied from was on NWDS 7.0.9 and currently this project is on NWDS 7.0.14 ??
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Global object visible for all sessions in WebDynpro application

Hello everybody,
in a normal java web application you have the possibility
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This object is visible for all sessions(e.g. some configurations or global settings for the
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Now my question:
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So I am looking for a container in WebDynpro which has
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Thank you for your ideas an suggestions.
Greetings
Anton

Hi Anton,
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2) If you want to make Variable to be used within the component among the Iviews ,then you can define at Component Controller or Custom Controller and Mapping has to be defined at Iview Level.
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