title: Activiti engine intergation with custom user & group data table
body: <p>My company has their own database and it contains user and group tables.I am creating a workflow manager using Activiti API also i am using Activiti-REST. I need to fetch user data and group data from my company database instead of using ACT_ID _USER and ACT_ID_GROUP. I searched through internet and post in their forum but i didnt get any sensible answers. </p>
  
  <p>In the forum they suggest to use LDAP but i dont have touch LDAP.</p>
  
  <p>I went through activiti source.can i just modify its iBATIS mapping files related to ACT_ID _USER.Will it work. Or their any better approach. Also activiti-rest api must work according to our own tables.</p>
  
  <p>Please can some one show some good references regarding to this. </p>