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Anyone used DAO access webservices and passed?

lambertlee Li
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My application needs to access different external systems(LDAP, webservices, email etc.). I think DAO is the perfect choice here. To provide a unified DAO layer, I decided to use DAO to access all external systems including webservices(I don't want to use dependency injection as i don't want to mix my business layer with external system).

However I google for a long time, can't find a good reason or article talking about using DAO to access web services.

Did anyone ever did this way and passed? Thanks!
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
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