topic Activiti service level optimistic locking in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/activiti-service-level-optimistic-locking/m-p/196258#M149388 <HTML><HEAD></HEAD><BODY><SPAN>Hey,</SPAN><BR /><BR /><SPAN>I have a process variable that many users can modify simultaneusly via their user tasks. For example a list, and users can add and remove elements to it. User A and B both see v1 of variable on their screen, then A updates it. Using RuntimeService, the version information is lost for the variable, and user B can easily overwrite the process variable: no optimistic locking.</SPAN><BR /><BR /><SPAN>I there any way to enforce optimistic locking on process variables in service level like the @version annotation on a JPA entity?</SPAN><BR /><SPAN>The problem is that when using RuntimeService, TaskService, the version info is lost.</SPAN><BR /><BR /><SPAN>I have 3 options:</SPAN><BR /><SPAN>- Either try creating my own locks as process variables</SPAN><BR /><SPAN>- Store the same information for the different users in different process variables then somehow merge them together</SPAN><BR /><SPAN>- I create a new service api for VariableInstanceEntity-s</SPAN><BR /><BR /><SPAN>Thanks,</SPAN><BR /><SPAN>Pal</SPAN></BODY></HTML> Mon, 24 Nov 2014 16:28:51 GMT pkonyves 2014-11-24T16:28:51Z Activiti service level optimistic locking https://connect.hyland.com/t5/alfresco-archive/activiti-service-level-optimistic-locking/m-p/196258#M149388 Hey,I have a process variable that many users can modify simultaneusly via their user tasks. For example a list, and users can add and remove elements to it. User A and B both see v1 of variable on their screen, then A updates it. Using RuntimeService, the version information is lost for the variabl Mon, 24 Nov 2014 16:28:51 GMT https://connect.hyland.com/t5/alfresco-archive/activiti-service-level-optimistic-locking/m-p/196258#M149388 pkonyves 2014-11-24T16:28:51Z Re: Activiti service level optimistic locking https://connect.hyland.com/t5/alfresco-archive/activiti-service-level-optimistic-locking/m-p/196259#M149389 <HTML><HEAD></HEAD><BODY><SPAN>Yes, that's a good point. We do store revisions for variable values so it would be possible to throw an optimistic locking exception. I think writing a API in RuntimeService to get a VariableInstance object instead of a plain name and value could solve this issue elegantly. Would you be willing to create a pull request for this?</SPAN><BR /><BR /><SPAN>Best regards,</SPAN></BODY></HTML> Tue, 25 Nov 2014 10:09:09 GMT https://connect.hyland.com/t5/alfresco-archive/activiti-service-level-optimistic-locking/m-p/196259#M149389 trademak 2014-11-25T10:09:09Z