SOA : Design Patterns : Legacy Encapsulation Design Patterns

Note : These are Design Patterns from "SOA Design Patterns" by Thomas Earl. The intent here is to simplify the patterns to a few lines so that they can be referred for a quick glance and also to document my experiences over time. This is by no means an effort to explain these patterns and I believe that the book has done an excellent job at that.

Legacy Wrapper

• Legacy systems expose the access through wrapper services which do not have a standardized contract and have tight contract to logic coupling and little abstraction.
• This is fixed by wrapping the legacy system with a new legacy wrapper service that has a standardized contract, loose coupling and abstraction.

Multi-Channel Endpoint

File Gateway