How to Assign Roles dynamically

[Former Member]

Hi Experts,

I created simple GP process with 3 Levels. Every level user i should assign dynamically.

For that i created one input parameter like userId. I mapped this parameter to filled with context parameter option in Block.

I need to start this process from Webdynpro application. My problem is if map UserID in Block means, i am not able to start process. With out mapping i am able to start process, But user is not dynmically.

I am getting Exception like:

com.sap.caf.eu.gp.exception.api.GPEngineException: Role Action4 may not be overwritten during instantiation

I am sending code how i am starting the process

 IGPProcess process = null;

	  try {
		  IWDClientUser wdUser = WDClientUser.getCurrentUser();
		  IUser user = wdUser.getSAPUser(); 
		  wdComponentAPI.getMessageManager().reportSuccess("current user is : " + user.getFirstName());
IGPUserContext userContext = GPContextFactory.getContextManager().createUserContext(user);
 process =GPProcessFactory.getDesigntimeManager().getActiveTemplate(processId,userContext);
		  IGPRuntimeManager rtm = GPProcessFactory.getRuntimeManager();
		  IGPProcessRoleInstanceList roles = rtm.createProcessRoleInstanceList();
		  int rolenum = process.getRoleInfoCount();
IUser dyn_User = UMFactory.getUserFactory().getUserByLogonID(wdContext.currentContextElement().getSel_PA_Name_Element());  //written by hari
		  wdComponentAPI.getMessageManager().reportSuccess("dyn user is : " + dyn_User.getFirstName());
		  IGPProcessRoleInstance roleInstance=null;
		  for (int i = 0; i < rolenum; i++) {
			  
			  if(i==3 || i==1 || i==2){
				 wdComponentAPI.getMessageManager().reportSuccess("Role "+process.getRoleInfo(i).getText()+"  "+process.getRoleInfo(i).getRoleName());
				  roleInstance = roles. createProcessRoleInstance(process.getRoleInfo(i).getRoleName());
				  roleInstance.addUser(dyn_User);
				  roles.addProcessRoleInstance(roleInstance);
			  }
		  }
		  
		  IGPStructure params = null;
		  try {
			  params = GPStructureFactory.getStructure(process.getInputParameters());
			  if (process.getTitle().equals("Accounts Payable Process")) {
				  params.setAttributeValue("BarcodeID_HO2PA2TA", barcode_Id);
				  params.setAttributeValue("UserID_Map_HO2POTA", wdContext.nodePA_Node().getPA_NodeElementAt(wdContext.nodePA_Node().getLeadSelection()).getPA_Name_Elemenet());
				  params.setAttributeValue("UWL_Subject_HO2PA2TL", "Enter Details For Barcode :"+barcode_Id);
			  }
		  }catch(Exception e){
			  wdComponentAPI.getMessageManager().reportSuccess("Exception in Parameter Set "+e);
		  }
		  IGPProcessInstance prInstance = rtm.startProcess(process,barcode_Id,"This process has been started using the GP public API",user,null,params,user);
		
		

	  }
	  catch(Exception e){
		  wdComponentAPI.getMessageManager().reportSuccess("Exception Main Try Block "+e);
	  }

In the above code in If condition i am assigning the 3 role.

 if(i==3 || i==1 || i==2){
				 wdComponentAPI.getMessageManager().reportSuccess("Role "+process.getRoleInfo(i).getText()+"  "+process.getRoleInfo(i).getRoleName());
				  roleInstance = roles. createProcessRoleInstance(process.getRoleInfo(i).getRoleName());
				  roleInstance.addUser(dyn_User);
				  roles.addProcessRoleInstance(roleInstance);
			  }

If i assign 3 roles Exception

com.sap.caf.eu.gp.exception.api.GPEngineException: Role Action4 may not be overwritten during instantiation

If i assign Not 2 roles Exception

com.sap.caf.eu.gp.exception.api.GPEngineException: Enter a role Action4 of role type 2

I need to assign role for initiator only, not for other level.

Please tell any solution to resolve this problem....

Regards,

Sunil

[Former Member]

Hi Sunil,

assigning users to roles from within a webdynpro-application requires setting the roles in the Guided Procedure correctly. It worked fine for me with the following configuration in the designtime environment:

Set all roles to "Instantiation defined", enable "Overwritable at Runtime", but not "Default Definition Required". I didn't set any default rules.

()

Hope, this might help.

Best Regards

Bettina

Message was edited by:

Bettina Hepp

[Former Member]

Hy Sunil,

if the problem is the parameter mapping in your GP - template using the context parameter UserID please take a look at the Blog

<a href="/people/berndt.woerner/blog/2007/09/19/different-ways-to-model-dynamical-assignment-of-user-to-process-roles-using-composition-tool-guided-procedures--part-1">Different ways to model "dynamically assignment of user to process roles"</a>

Hope this will help, just let me know if this fits or you need further information

Greetings Berndt