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Activiti 5.12.1 - Unknown property used in expression:ldapService

minalghorpade

Hi ,
I am new to Activiti . I am using ACTIVITI 5.12.1 n follwoing userguide for each n evrything.
Now I am Facing problem in activiti n spring integration . I am trying simple user task with assignee .For this I am refering userguide.

<userTask id="task" name="My Task" activiti:assignee="${ldapService.findManagerForEmployee(emp)}"/>

I am getting this error :-

ActivitiException: Unknown property used in expression:${ldapService.findManagerForEmployee(employeeName)}

where as I have already define ldapService bean in activiti-standalone-context.xml file of activiti-explorer .

Please assist me on how to get over this.

Thanks
Minal

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Comments

pratikbhatt

Please check… This exception arise when stored value of variable is null! or Variable in Expression could not be settled from bean..! same error I have faced…

minalghorpade

Hi..
Thanks Pratik for your reply. Actully I am newbiee in development , I didn't understand exactly what you are saying .
Can you please explain me step by step ?

Thanks
Minal

minalghorpade

I want to use this type of assigment to be done in my workflow for usertask :-
userTask id="task" name="My Task" activiti:candidateGroups="${ldapService.findManagers()}"

I have written java class named " LdapServices " which has my logic to find group.
and
I have define bean id as : - bean id="ldapService" class="com.genex.services.LdapService" in activiti-cfg.xml file .

but still getting same error as ActivitiException: Unknown property used in expression:${ldapService.findManagerForEmployee(employeeName)}

please help me where should I define this ldapService bean so that It get worked .

Please help .

Thanks
Minal

pratikbhatt

hi minal

Actually I haven't done this type of program which you are doing but what I know is when we use "service task" in process flow to access java class, we have to set Variable using JavaDelegate Interface… and this simple process illustrated below

import org.activiti.engine.delegate.*;
import org.bean.getterSetter;

public class CustomerDetails implements JavaDelegate {
@Override
public void execute(DelegateExecution DE) {
BeanClass bc = new BeanClass(); //this instance is from bean class getterSetter which is imported above
bc.setName((String) DE.getVariable("name"));
bc.setSurname((String) DE.getVariable("surname"));
DE.setVariables("customerDetails", bc); //here we set variable which can be accessed from process "${customerDetails.name}, ${customerDetails.surname}"
}
}

pratikbhatt

if you want then mail your .bpmn file on my id "rinkbhatt@gmail.com" so I can figure out your problem…
thanks…
regard