I am trying to use users and groups managed from other system. Users and groups are managed by a different application where we maintain the users and groups (Oracle DB). Now I need to use those users and groups . How can I achieve it? how can I change the usermanager and groupmanager.
You might take a look at: https://github.com/limcheekin/activiti-spring-security The code subclasses org.activiti.engine.impl.persistence.entity.UserEntityManager and org.activiti.engine.impl.persistence.entity.GroupEntityManager via the respective factory classes. Googling on the class names will yield more examples.