Intercepting Filter

  • Behavioral
  • Decoupling
Less than 1 minute


Provide pluggable filters to conduct necessary pre-processing and post-processing to requests from a client to a target

Class diagram

alt text
Intercepting Filter


Use the Intercepting Filter pattern when

  • a system uses pre-processing or post-processing requests
  • a system should do the authentication/ authorization/ logging or tracking of request and then pass the requests to corresponding handlers
  • you want a modular approach to configuring pre-processing and post-processing schemes


Real world examples