[OT] Re: Adapter Vs Business Delegate

[Gareth Andrew <ga...@ntlworld.com>]

Whats this got to do with Struts?

Adapter is a very general pattern that converts the interface of one 
class inot a different interface.
Business Delegate is a pattern specific to enterprise-apps that aims to 
decouple the business services from the presentation tier.  A Business 
Delegate hides implementation details like JNDI lookups etc from the 
presentaton tier, it is therefore much more than an adapter (which is 
usually just a dumb object which delegates all incoming requests). 
However since a Business Delegate often transforms the interface of the 
business service into another interface which is more friendly to the 
presntation-tier it may be thought of as a type of adapter.

Gareth.

For more information on Business Delgate try, 
http://java.sun.com/blueprints/patterns/BusinessDelegate.html

For more information on Adapter buy Design patterns: Elements of 
Reusable Object-Oriented Software - Gamma, Helm, Johnson, Vlissides

Rajesh Khater wrote:
> Hi,
> 
> Whats the difference between Adapter and the Business Delegate pattern ?
> 
> Regards,
> Rajesh.
> 
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