We use 1-recursion to abstract the handler class:
- Every handler can have 1 follower.
- Handlers attempt to handle request one at a time.
- Once handled, we can decide to hand to next handler or stop.
- Can adjust chain dynamically.
Benefits:
- Each case nicely encapsulated
- Can be treated in isolation
- More compact view of all cases possible
- Possibility to dynamically adjust request handling as needed
- Can be declaratively configured
- This is what many modern web frameworks do for route management
Disadvantages:
- Object structure must be set up explicitly with objects constructed at run time
- Object proliferation