Call RFC from EJB code

Hi,
I have a scenario where I need to write an EJB from where I need to execute a JCO call to an RFC. This RFC takes an XString as input (this is the input file) and returns a XString from which an XML needs to be generated.
Can anyone suggest how to go about this?
Thanks,
Shiladitya

JRA is the way to go....
check my blog on this...
/people/amol.joshi2/blog/2006/11/27/alerts-from-adapter-modules--the-jra-way

Similar Messages

Call RFC from EJB using SSO

Can anyone point me in the right direction on the best practice for calling an RFC using SSO from an EJB?
When using the local interface for the EJB, the only solution I see is to pass the authenticated IUser instance from the portal component to the EJB business method through the method signature.
I am guessing that there is a better way to get access to an authenticated user in the EJB container.

Thanks for the reply.
Actually I was able to solve the problem last night. To get SSO to work in my local EJBs I created an RFC destination in the destination service using the visual administrator. I then used the destination service at runtime to pull the system definition from the J2EE system definitions store instead of the portal system landscape definitions and my connection object was created as expected.
Here is the code to create the connection in my EJB business method:
//get the user
IUser user = UMFactory.getUserFactory().getUserByUniqueName(this.myContext.getCallerPrincipal().getName());
// get the destination service
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sapportals.portal.prt.registry.PortalRegistryFactory");
InitialContext context = new InitialContext(env);
IDestinationsService destinationsService =
(IDestinationsService) context.lookup(IDestinationsService.SERVICE_JNDI_NAME);
// define a destination filter to restrict to the RFC defined destinations
DestinationFilter destinationFilter1 =
new DestinationFilter(DestinationFilter.SOURCE_J2EE_DESTINATION_SERVICE, DestinationFilter.TYPE_SAP);
// get a user specific connection
IConnection connection = destinationsService.getConnection(user, "ECC", destinationFilter1);

Calling RFC from custom connector

Hi,
I am developing a custom connector for UWL to get tasks from 3rd party system.
I need to call a RFC from backend SAP system to complete Input data for this 3rd party provider.
I assume that I have to make an RFC call from getItems() method of connector.
Any idea how to call a RFC from UWL custom connector code?
Please help.
Thanks & Regards,
Amey

Hello Karri,
Yes, I am aware of two ways of calling RFCs from Java code.
Normally, I use following approach to call RFCs from my other Portal Components (JSPDynpages): -
IPortalComponentRequest request = (IPortalComponentRequest) this.getRequest();
IPortalComponentContext myContext = request.getComponentContext();
IPortalComponentProfile myProfile = myContext.getProfile();
String sapSystem = myProfile.getProperty("SystemIdentifier");
ISystemLandscapeWrapper landscapeWrapper = (ISystemLandscapeWrapper) UMFactory.getSystemLandscapeWrappers().get(0);
ISystemLandscapeObject systemLandscapeObject = landscapeWrapper.getSystemByAlias(sapSystem);
IJCOClientService clientService = (IJCOClientService) PortalRuntime.
getRuntimeResources().getService(JCO_CLIENT);
request.getNode().putValue(LOCALE_NODE_KEY, Locale.ENGLISH);
IJCOClientPoolEntry poolEntry = clientService.getJCOClientPoolEntry(sapSystem,request);
JCO.Client client = poolEntry.getJCOClient();
client.connect();
IRepository repository = JCO.createRepository("repository", client);
IFunctionTemplate functionTemplate = repository.getFunctionTemplate(Z_BAPI_EMP_GBU_GET);
JCO.Function function = new JCO.Function(functionTemplate);
JCO.ParameterList importList = function.getImportParameterList();
importList.setValue("US", "OBJTYP");
importList.setValue(request.getUser().getUniqueName(), "USRID");
client.execute(function);
JCO.ParameterList outputList = function.getExportParameterList();
gbuCountryBean.setGbu(outputList.getString("GBU"));
gbuCountryBean.setCountry(outputList.getString("COUNTRYCODE"));
gbuCountryBean.setPersArea(outputList.getString("PERS_AREA"));
gbuCountryBean.setCompanyCode(outputList.getString("COMPANYCODE"));
When I tried implementing same in UWL custom connector, I am not able to get instance of 'request' object.
Any hints/ideas on this?
Hence as an temporary alternative, I wrote following to successfully execute RFC.
mConnection = JCO.createClient(sapclient, sapuser,
sappassword, "EN", saphost, sapsysnumber);
mConnection.connect();
mRepository = new JCO.Repository("GetLeaveRequestFlag", mConnection );
IFunctionTemplate ftemplate = mRepository.getFunctionTemplate(Z_BAPI_CHECK_LR_TO_APPROVE);
myFunction = new JCO.Function(ftemplate);
JCO.Field OBJECT_TYPE = myFunction.getImportParameterList().getField("OBJECT_TYPE");
OBJECT_TYPE.setValue("US");
JCO.Field USERID = myFunction.getImportParameterList().getField("USERID");
OBJECT_TYPE.setValue(p_userID);
mConnection.execute(myFunction);
JCO.Field leaveRequestFlag = myFunction.getExportParameterList().getField("FLAG_LEAVE_REQUEST_RECORD");
mConnection.disconnect();
But only catch here is that I need to create & maintain SAP logon credentials for a particular user manually.
It is not possible to single sign on connector user into SAP system (like its done above).
Any thoughts on this?
Thanks & Regards,
Amey

Sample Java code and detail to call RFC from Java clas developed in Eclipse

Hi All,
I am new to Java. I have downloaded Eclipse IDE and planning to use for developing Java application to send data to SAP by calling RFC JCO Interface.
I need a sample java code/tutorial step by step to create Java class for simple example to call RFC from Java.
I have downloaded SAPJCO3 from service market place.
Kindly help me to send steps involved to configure for JCO with my Eclipse with JCO.
Thanks in advance.
Sharma

Hi Sharma,
Please have a look at [Example: Using Generated Proxies to Call Function Modules |http://help.sap.com/saphelp_nw04/helpdata/en/b6/55e3952a902447847066a0df27b0d6/content.htm]
JCo Exceptions : http://help.sap.com/saphelp_nw70ehp1/helpdata/en/f6/daea401675752ae10000000a155106/content.htm
Hope it will helps
Regards
Arun

How to call RFC from Power Builder

Hi,
I am using Power Builder Tools and I want to know how can i call RFC from Power Builder
Thanks for ur reply

Hi,
Although I have not worked with Powerbuilder, I am sure if you have a certain level of proficiency with it, you will be able to code your logic that will call your wrappers written in VB/C/.NET etc. Check out the wonderful weblog by Thomas Jung on integrating ActiveX controls with ABAP Control Framework at https://www.sdn.sap.com/sdn/weblogs.sdn?blog=/pub/wlg/995. [original link is broken] [original link is broken] [original link is broken] [original link is broken] [original link is broken] [original link is broken] [original link is broken] [original link is broken] [original link is broken]
Do get back if you have further queries.
Regards
Message was edited by: Shehryar Khan

Example-- Call RFC from external Java Application

Update: I need code example to call RFC from External Java application. Can onybody help me?
RGDS
RP
hi all.
i want to create my own log for each interface.
i saw this blog:
/people/michal.krawczyk2/blog/2006/09/20/xi-abap-mapping-logs--more-standard-better-visibility
my doubt is how to catch the error that i see in SXI_MONITOR y put it in a Sub-Objetc.
For example: in sxi_monitor i get the error for my interface NMUCustomer: "No receiver could not be found" or "Error Mapping Traformation".
I created an Object called ZNMUCUSTOMER and a Sub-Objetc called ZERROR.
what i must do to get the error I see in monitor and assign it to Sub-Object??
Rgds.
Message was edited by:
        Rodrigo Pertierra
Message was edited by:
        Rodrigo Pertierra
Message was edited by:
        Rodrigo Pertierra

Hi,
Oh, you are using ABAP mapping ......
then use the following in ABAP mapping ..
TRACE1,TRACE2,TRACE3.... for trace level 1,2,3......
http://help.sap.com/saphelp_nw04/helpdata/en/ba/e18b1a0fc14f1faf884ae50cece51b/content.htm
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/5c46ab90-0201-0010-42bd-9d0302591383
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/866ce290-0201-0010-338f-b8c3553aaa0f
Regards
Chilla

Calling RFCs from Web through XI

We have used SAP.NET connector in the past to call RFCs from ASP.NET pages from our public website. We have now decided to use XI as the enterprise integration engine going forward.I am interested to know whether anybody has used XI to call RFCs from ASP.NET webpages. I do know that the XI to SAP calls would be made through RFC adapter.Will the communication from ASP.NET page to XI be thourgh the HTTP adapter ? or is there any other smarter way. Can somebody point me to sample code for the calls through http adapter or a how to guide?
cheers
Ramesh

Hi
U have scenario like this ASP.NET->XI->RFC, that means u will send a value from the ASP.NET page to RFC thru XI and then this RFC will give result which will come to ASP.NET frontend.
For this go thru this blog it will help u to understand how to communicate from ASP.NET to XI
<b>https://www.sdn.sap.com/sdn/weblogs.sdn?blog=/pub/wlg/1442</b [original link is broken] [original link is broken] [original link is broken] [original link is broken] [original link is broken] [original link is broken] [original link is broken] [original link is broken]> [original link is broken]
Code Sample is provided in the blog.
Hope it helps.
Regards
Arpit Seth

Call RFC from DELPHI Windows Services Program

Hi all,
Are there any way to call RFC from DELPHI Windows Services Program?
Best regards.
Munur EBCIOGLU

Hi again Bhagat,
1. Yes, it's included on 7.4 ABAP Stack (SAP NetWeaver 7.4 SP8 - Optimized for SAP HANA, Cloud and Mobile - Service Release 2 available now!). In a recent customer, SAP licences GW by user but there are other license model like session licensing: https://store.sap.com/sap/cp/ui/resources/store/html/SolutionDetails.html?pid=0000009470&catID=&pcntry=US&sap-language=EN&_cp_id=id-1385059687642-0
2. You could install as an AddOn on your 7.3 system, there are many options depending on your desired infrastructure: SAP Gateway deployment options in a nutshell For example our customer have deployed Central Hub Gateway in a standalone stack ABAP to act as an standalone oData bridge between ABAP/nonAbap systems.
3. You could deploy SAPUI5 apps in 7.x, Java Web Servers or HTTP Web Servers. You must consider your SSO scenario:
- SSO Logon Tickets. You will need to configurate SSO Logon Tickets between SAP NW Portal & SAP NW Gateway & your backend (ECC, etc). In order to pass SAP session cookie you will need setup SAP Web Dispacther and access portal & gateway throught SAP WD with the same domain.
- SAML2 Tickets. This scenario lets you provide portal & gateway on different domains enabling SSO. You could configure SAP NW Portal as an Identity Provider and other systems must trust SAP Portal as IdP.
Cheers

Call RFC through EJB

Hi,
I have senerio in which i need to call RFC through EJB.
Thanks.
Abhilasha
Edited by: Abhilasha Dahare on Oct 3, 2008 1:29 PM

Hi,
Go through the following links:
Extract R/3 data via EJB
http://help.sap.com/saphelp_nw04/helpdata/en/35/42e13d82fcfb34e10000000a114084/frameset.htm
Siddharth

Calling RFC from JSP : development component

Hi everyone,
I created JSP that call RFC from SAP/R3.
I have problem with the DestinationService.
Without DCs, it worked very good.
But since I created a DC for my JSP project, I have exception at run time regarding
the java.lang.NoClassDefFoundError: com/sap/security/core/server/destinations/api/DestinationService.
Eventhough I add the specific jar, I get an excpetion.
Thanks for the help.
David

Go to the application-j2ee-engine.xml file and add following reference:
     <reference
          reference-type="weak">
          <reference-target
               provider-name="sap.com"
               target-type="interface">tcsecdestinations~interface</reference-target>
     </reference>

Calling RFCs from Webdypro application!!!!

Can anybody show me a suitable example for calling rfc from webdynpro application.

Hi steve,
Look at this tutorial..
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/tutorial on accessing abap functions in web dynpro - 4.htm
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webdynpro/tutorial on handling transactions with bapis in web dynpro - 5.htm
Follow the steps provided in those documents.
You can easily understand how to access ABAP functions from WebDynpro.
Let me know if you need more help on this.
Regards,
Karthick

Call RFC from java (j2ee) / call to j2ee from R/3

hello
i´ve browsed the forum for some time to find how to:
1.) call ejb from r/3 system via rfc
2.) call rfc enabled function modules on r/3 from within an j2ee enviroment
but i didn´t quite get it, because i was a bit confused about all the mentionend techniques
what i found out about
1.) use ejb (session bean) and jndi; configure RFC-Engine Service (we use sap webas)
2.) use jco / jca
(or all rfc enables rfm´s are available as web service, but didn´t find anything about this)
so my question:
are these the preferred techniques to connect j2ee (webAS) <-> r/3; if not are there any others, maybe easier methods?
and last but not least: are there any good online tutorials for this topic?
thanks in advance
franz

Just as a short partial reply.
The generic Java --> RFC method is JCO (it will work on older versions as well), you can think of it as a JDBC driver where R/3 is the database, it behaves very similar in many ways.
EJB development on SAP WAS is really not any different from EJB development on any other J2EE server. The deploy tool is superb. very easy to use and the JNDI registry, etc. are standard stuff...
ABAP to EJB calls, haven't looked at this in over a year now, but back then we did a Proof Of Concept based on information at http://help.sap.com and it did work indeed. The only thing was back then that you needed to do a few tweaks to get it to work properly.
As mentioned above, look at the JCO examples and then you can ask more specific questions once you get stuck.
Good Luck!
Cheers,
Kalle

How to call RFC using EJB module.

hi,
    I want to call the RFC using EJB module in java. how to do it.
    if someone having the code plz post it.
regards,
Shanthakumar.

/***Start of JRA specific code***//
// Retrive connection factory
InitialContext initialcontext = new InitialContext();
connectionfactory = (ConnectionFactory) initialcontext.lookup("java:comp/env/ConnFactory");
//Request a connection handle:
connection = connectionfactory.getConnection();
//Create a RecordFactory object to get a metadata description
// of the RFC SALERT_CREATE
RecordFactory recordFactory = connectionfactory.getRecordFactory();
// Create Record objects containing all
// necessary information about the RFM.
MappedRecord input = recordFactory.createMappedRecord("SALERT_CREATE");
//Fill in the import parameters and the import table structure data here
input.put("IP_CAT", "ALRT_CAT"); // alert category
// Refer to the SW_CONT structure of the table of RFC SALERT_CREATE
ResultSet inputITContainer = (ResultSet) input.get("IT_CONTAINER");
int tabIndex = 0;
inputITContainer.moveToInsertRow();
inputITContainer.updateString("ELEMENT", "CONT_1");
inputITContainer.updateString("TAB_INDEX", "" + tabIndex++);
inputITContainer.updateString("ELEMLENGTH", "250");
inputITContainer.updateString("TYPE", "C");
inputITContainer.updateString("VALUE","Container_1 value");
inputITContainer.insertRow();
inputITContainer.moveToInsertRow();
inputITContainer.updateString("ELEMENT", "CONT_N");
inputITContainer.updateString("TAB_INDEX", "" + tabIndex++);
inputITContainer.updateString("ELEMLENGTH", "250");
inputITContainer.updateString("TYPE", "C");
inputITContainer.updateString("VALUE","Container_N value");
inputITContainer.insertRow();
interaction = connection.createInteraction();
// execute the call with the input parameters.
interaction.execute(null, input);
}catch(Exception e){
     // Error handling code goes here
}finally{
     try {
                if (interaction != null)
               interaction.close();
          if (connection != null)
               connection.close();
     } catch (Exception ignored) {
          // Do nothing
// Pass on module data to the next module in chain, unaltered
return moduleData;

Calling Servlets from EJB

Please can anyone help me out of how to make sevlet calls from EJB? Example source code if available will be of great help too.
I know that this is a rare senario but this is required for a very urgent work.

Vladimir - thanks again !!
I am getting closer, I have 3 errors for "cannot resolve symbol"
.../work/jsp_testmap1175186470750.java:78: cannot resolve symbol
symbol : class mappingservices
location: package appsrv
fsd.oms.appsrv.mappingservices mappingServicesLocal = null;
                      ^
.../work/jsp_testmap1175186470750.java:79: cannot resolve symbol
symbol : class mappingservices
location: package appsrv
mappingServicesLocal = (fsd.oms.appsrv.mappingservices)pageContext.getAttribute("mappingServicesLocal", PageContext.SESSION_SCOPE);
                                                           ^
.../work/jsp_testmap1175186470750.java:85: cannot resolve symbol
symbol : class mappingservices
location: package appsrv
mappingServicesLocal = (fsd.oms.appsrv.mappingservices) Beans.instantiate(getClass().getClassLoader(), "fsd.oms.appsrv.mappingservices");
                                                           ^
3 errors
(all ^ point between appsrv and mappingservices)
This appears to be a classpath issue? Could this fall under this SAP note?
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/oss_notes/sdn_oss_bc_jas/~form/handler
Or do you know of issues with string methods instead of object methods?
Those were a couple of posts I found, that seemed similar, but not really. I appreciate the experienced help and your thoughts!
thanks again - Allen

Calling RFC from view/component controller

I've got a model node in the component controller's context which is mapped to a node in a view controller. Now, when binding the model's input node with an array and executing the RFC from within an event handler in the view controller, everything goes just fine.
Now, I want to put this functionality in the component controller, so I created a method there, copied the code and call it from the view controller's event handler. When the RFC is called, the input table always contains just 1 element, of which the fields are all initial.
Any thoughts on what might be going on here?

Hi friend,
I too faced the problem what you faced.
Near to it.
Ill explain you .
YOu have your model node.
1st you will map that to component controller And from there to view controller.
After that you will bind the elements in this node to some elements in your view after that .
For example
Model class name:-Lok_model.
In the DOINIT method:-
write this code.
Lok_model k = new Lok_model(); wdContext.nodeLok_model().bind(k);
Suppose you have a button in the onaction you write this code.
wdContext.nodeLok_model().currentLok_modelElement().modelObject().get_details();
Ill expalin you about this statement Lok_model() is the node in my view which is mapped from the model and by using that i am calling the method get_details() which is in my model class Lok_model.By this data will be automatically populated into the view elements which are being binded to the model attributes.
Hope this helps you,
Lokesh

Call RFC from EJB code

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