Spring in business :examples

anyone extended spring in a cool way for a business problem that meant you could not use spring out the box but needed something custom? one is logging with AOP, security ... i had to extend security to have roles plus privildges ...so can create and change and user groups outside of code. Any more examples you can share with me? need to give a talk on it. More on the spring security change i did - [login to view URL]… Any more examples like this where you have used spring to solve a business problem by extending it in an elegant way, and can share with me, need to do a talk on this. So what I need - a blurb - short content describing a business case and how you extended spring. Willing to pay $25 for the first to cases I like. See attached for full github link that has sample case. I do not need code - just short technical write up like the one in the link OR posted here too: Spring is great. One example where it helped solve a business problem with little customization is : by default spring security has users and roles we add roles to URLs and methods, to 'guard' them, only users with that role can enter we keep our users in db and our roles too map roles to users Disadvantage here is that if you have many users or/and roles it can be tedious to edit . And need to do code changes to change who can see what Also if you just use 4-5 roles then you have less flexibility . If your customer wants a level of in direction - so without changing code can have different users have different groups. Also in one installation might want 4-5 groups, and in another 10. In this case its nice to have a table of privileges, so each method/ url can be guarded by one. Then outside if code we can create n number of groups (roles) and users. Solution One way to solve this is : Have a mapping table of users-to-roles and another of roles-privileges, and ask sql to: "give me all privileges of all roles of user X", this can be plugged into just the right place in spring and voila you have extended spring security with just a XML change Code: select username, [login to view URL] from user_roles u, roles_privileges r where username = ? and [login to view URL] = [login to view URL] You could also write this in a Java class that is the handler for authentication, but again its just a few lines of code. In data base this would go to Privilidges table. Users would be in users table. Business can make its own Roles in Roles table Then map Privilidges to roles. Link happens in spring security XML to make join and get right roles for a user that are in source. Example URL/ function in code can be accessible by a role called admin_user_add, this would be hard coded in source files (xml/java)