Start GP Process using web services

Question

Hi,
I am trying to start a GP process from a Java EJB project using WSDL created by GP component for a particular template. I have created the deployable client proxy from the WSDL and added the reference in the EJB project.
Any idea how to use different proxy classes within the EJB project to start the process.
Thanks
Rajeev

Answer 1

Hi Rajeev,
  i haven't done one with EJB triggerred it from webdynpro. here is a snippet that kicks of the sample time off process using api from webdynpro
          IUser user = null;
          IGPStructure params = null;
          //  Get current user
          try {               
               IWDClientUser wdUser = WDClientUser.getCurrentUser();
               user = wdUser.getSAPUser();
               //     obtain the Process template
               IGPProcess process = 
                          GPProcessFactory.getDesigntimeManager().getActiveTemplate(
               //     by specifying its ID
               processId,
               //     and the user accessing it
               user);
               //     obtain the Run Time Manager
               IGPRuntimeManager rtm = GPProcessFactory.getRuntimeManager();
               //     create a new, empty role assignment list
               IGPProcessRoleInstanceList roles = rtm.createProcesRoleInstanceList();
               //     get the number of roles required
               int rolenum = process.getRoleInfoCount();
               //     iterate over the required roles
               for (int i = 0; i < rolenum; i++) {
                    //     add a new role assignment to the list
                    roles.createProcessRoleInstance(
                    //     by specifying the role's unique name
                    process.getRoleInfo(i).getRoleName()).addUser(
                    //     add the current user to every process role
                    user);
               // Here you see how to populate parameters with data.
               // This example only works, if you initiate the "Time-Off process"
               // that is delivered per default with the GP Framework.
               // You find it in the gallery below "Examples".
               // Otherwise no parameters are initialized.               
                       params= GPStructureFactory.getStructure(process.getInputParameters());     
               if (process.getTitle().equals("Time-Off Process")){
                    IGPStructure struc = params.addStructure("Time_off_data.1");                    
                    struc.setAttributeValue("AbsenceTypeText", "Vacation");
                    struc.setAttributeValue("SimulationCode",0);
                    struc.setAttributeValue("CompletionCode",0);
                    struc.setAttributeValue("PaidFlag", true);                    
               //     initiate the process template by passing the Process template
               rtm.startProcess(process,
               //     a name,
               "API started Process",
               //     a description,
               "This process has been started from a WebDynpro via public API",
               //     the initiating user
               user,
               //     the role assignment,
               roles,
               //     the initial parameters
               params,
               //     and the user actually executing this action
               user);
          } catch (WDUMException ex) {
               logger.traceThrowableT(Severity.ERROR,
                    "Current user could not be resolved: ", ex);               
          } catch (GPInvocationException ex) {
               logger.traceThrowableT(Severity.ERROR,
                    "Exception raised when trying to start process: ", ex);               
          } catch (GPEngineException ex) {
               logger.traceThrowableT(Severity.ERROR,
                    "Exception raised when trying to start process: ", ex);                    
Hope that helps
Abdul