Changing userId (username) by code

[bubu]

Hi all, I'm interacting with Activiti by using the Activiti Engine 5.20 API.

Is it possible to change the userID (and the groupId) through indentyService?
        IdentityService identityService = processEngine.getIdentityService();
        org.activiti.engine.identity.User identiUser = identityService.createUserQuery().userId("kermit").singleResult();
        identiUser.setId("pipponzo");
        identityService.saveUser(identiUser);

It throws

org.activiti.engine.ActivitiOptimisticLockingException: org.activiti.engine.impl.persistence.entity.UserEntity@650ae78c was updated by another transaction concurrently
    at org.activiti.engine.impl.db.DbSqlSession.flushUpdates(DbSqlSession.java:880)
    at org.activiti.engine.impl.db.DbSqlSession.flush(DbSqlSession.java:619)
    at org.activiti.engine.impl.interceptor.CommandContext.flushSessions(CommandContext.java:212)
    at org.activiti.engine.impl.interceptor.CommandContext.close(CommandContext.java:138)
    at org.activiti.engine.impl.interceptor.CommandContextInterceptor.execute(CommandContextInterceptor.java:66)
    at org.activiti.engine.impl.interceptor.LogInterceptor.execute(LogInterceptor.java:31)
    at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:40)
    at org.activiti.engine.impl.cfg.CommandExecutorImpl.execute(CommandExecutorImpl.java:35)
    at org.activiti.engine.impl.IdentityServiceImpl.saveUser(IdentityServiceImpl.java:65)
    at com.jnsw.gesdoc.test.ActivitiUnitTest.updateUserID(ActivitiUnitTest.java:200)

(I think we cannot change userId because it is a key and it cannot retrieve anylong identiUser beacause we've changed the id)

Thanks in advance.

[jearles]

Stefano,

My results are consistent with yours; I'm not sure if there is a workaround for this.
In all cases that I've found or that have worked for me, the 'setId' method is only usable for preemptive setting of a user's ID value - not changing it after it's been saved already.

-JEarles