Call an RFC as a Workflow step

Question

Hi,
I need to integrate inside a workflow (designed via Process Composer) a call to a backend RFC.
In detail, I need to make a callback to the backend when a process is created to register the successful creation of the process itself.
So it should be something like this:
START --> AUTOMATED RFC CALLBACK --> Workflow tasks --> END
I'm trying adding an EJB and linking it to the workflow with a Mapping Activity, but I'm not sure that I'm doing the right thing.
I've found a SAP guide that shows how to call an EJB from a workflow with a Mapping Activity but I'm having problems making things work.
Can someone suggest me if this is the right way to get the things done?
As a side note:
I work in a multi-track development environment. Every track has inside a project representing a specific workflow. Could it be possible to have a single EJB, placed in a track, to handle all the callback request from all the workflows from different tracks?
Thank you,
Pietro

Answer 1

Hi,
a little update...
I've made the EJB work! This is an excerpt of the code:
@Stateless
public class ActivationCallbackBean implements ActivationCallbackLocal {
     // FUNCTION NAMESPACE
     private static final String NAMESPACE_FUNCTION_PARAMETER = "mycompany.com/mctfc_invoice_approve";
     // PARAMETER NAMES
     private static final String P_ID = "ID";
     // PARAMETER LOOKUP NAME
     private static final String NAME_PROPERTY_INPUT_ID = SdoRenamingHelper
     .renameXsdElementToSdoProperty(new QName(
               NAMESPACE_FUNCTION_PARAMETER, P_ID), false);
     public DataObject invokeSdo(DataObject input, InvocationContext invContext) {
          boolean isBackendCallSuccessful = true;
          Type typeInput = input.getType();
          String id = input.getString(typeInput
                    .getProperty(NAME_PROPERTY_INPUT_ID));
Now, as I said I have multiple workflows and I'd like to have only one EJB to handle all the calls. In order to do that I've added a special input parameter to discriminate which workflow is the "caller". But I've got a problem. When I define in Process Composer an EJB Function under "Rules and functions" in order to point to the EJB, i got a fixed value for the namespace.
Since the namespace is mandatory to retrieve the input values in the EJB and the namespace is based on the workflow I'm working with:
NAMESPACE_FUNCTION_PARAMETER = "mycompany.com/mctfc_invoice_approve";
(mctfc_invoice_approve is the name of one of the workflows) what can I do to have only one EJB and overcome this limitation? Is this possible?
Thank you,
Pietro
Edited by: pietro.m on Apr 4, 2011 5:09 PM