Another "public methods" consern

[Misha Milshtein]

"Client implementaton should include a class that implements the same public methods ad suncertify.db.data class...."
My question is: must the methods of the client class have the same exact signatures ad the Data methods, or it is enough for them to have the same functionality?

[Rick Fortier]

It actually says that they should use the same class, Data.
The Data class knows how to read and write to the file. So whether the server is acting as a proxy to Data, or the client directly makes calls to Data, they both eventually get funneled through the Data class.
There is no reason to duplicate the same functionality when that code has already been written.
You need to provide an interface that will call the same Data methods, whether it is remotely or local.

[Paul Anilprem]

Yes, they must have the same signature. Of course, the client side methods will only delegate the call to the actual Data class either directly or through some remoting mechanism.
HTH,
Paul.
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[Lance Finney]

Doesn't this require us to import all the db classes to the client?