Design Patterns discussion

[Wayne Cannon <wcannon AT sonic.net>]

In the Bridge pattern the "Abstraction" (or, rather, 
"RefinedAbstraction") is not an interface -- it is a concrete object.  
It is the only object that the Client references.  The Client has no 
idea how the object is actually implemented, i.e., it has not idea that 
a Bridge pattern is in play.  The "Abstraction" fields the operation and 
passes it on to the Implementor (or, rather, "ConcreteImplementor").  
There can be different implementors for different reasons and/or at 
different times.

--Wayne

Chris Finlayson wrote:

> Now, I see this as identifical to the Bridge pattern....where the
> ISortStrategy is the abstraction and the concrete sort strategies are the
> implementations.  What am I missing?
>