Call Enterprise service in BPM Process

Question

Hi,
I define a BPM process for PO creation
In the first Lane : Purchase requestor
In the second Lane: Approve Process
In the third Lane: Create PO(Enterprise Service)
Here in the first lane iam giving the below attributes
Requestor Name
Requestor Country
Product ID
Product Descrption
This will be send to second lane i.e Approver Process
Once he approved it should create a PO in Hu2 if he reject it should goto first stage
I consumed Enterprise Service from HU2 and i published in service registry
Now i created automated activity and imported PO create service in BPM flow seccussfully.
Now my problem is to write code in webdynpro.
How to write code for below process?
In the second lane i.e Approver Process i should write a code that if it approve goto third process i.e call webservice which which creates a PO .If it rejects goto first process??How to write this code?Plz can u help Iam new to coding moreover to webdynpro...
Regards
Shwetha.
Edited by: Shwetha-Capita on May 1, 2009 1:28 PM

Answer 1

Hi Shwetha,
The following part of the documentation explains how to prepare your Web Dynpro DC so that it can be used in SAP NetWeaver BPM:
https://help.sap.com/saphelp_nwce711/helpdata/en/48/cae1791e774da5e10000000a421937/frameset.htm
The important thing to know is that SAP NetWeaver BPM is waiting for a complete event to be triggered in your application. Once this is received the process flow continues.
So in your case you would simply create two Web Dynpro user interfaces. The first one for entering the data and the second one for reviewing / approving / rejecting the data.
In the first case you would have some sort of "submit" button, which triggers the before mentioned 'complete' event. SAP NetWeaver BPM will then take the data that is visible in the Web Dynpro context of the interface controller and continue the processing.
The second case basically works the same with one little difference: Here you would have two buttons -  one for the approval and one for rejection. Both will trigger the 'complete' event, but should set a field in the Web Dynpro context (e.g. "isApproved") differently. While the "approve" button should set it to "true" the "reject" button would set it to "false".
So once this step is also completed you could make use of gateways and conditions (https://help.sap.com/saphelp_nwce711/helpdata/en/47/635cb242bf6831e10000000a421937/frameset.htm) in your proces model to determine if the data should be passed to the service for PO creaton or if it should handle a different situation in case of a rejection.
If you're new to SAP NetWeaver BPM it might help having a look at the documentation first and also browse through some sample models as they are provided here:
https://www.sdn.sap.com/irj/sdn/nw-bpm?rid=/webcontent/uuid/006a16ad-a3ad-2b10-4e9a-af2ee5820848 [original link is broken]
Hope that helps,
Martin