Re: Vended Object Setters
Re: Vended Object Setters
- Subject: Re: Vended Object Setters
- From: Ken Thomases <email@hidden>
- Date: Thu, 17 Apr 2008 10:25:32 -0500
On Apr 17, 2008, at 10:01 AM, Justin Giboney wrote:
bycopy worked, thank you.
Uh, OK. Glad it helped, but your original problem is still
mysterious. I don't know about you, but I don't like blindly fixing
things without understanding them.
Does this mean though that I need to duplicate all of methods, with
one set for internal commands and one for remote commands?
No.
The proper thing to do is to declare a protocol which describes the
interface that your vended object exposes. This protocol should be in
a header file that both the client and the server can include. The
protocol should have all of the type qualifiers that are appropriate.
In the server, have the class of your vended object adopt the
protocol. However, you only need to implement each method once. The
use of type qualifiers in no way requires that you duplicate methods.
For uses internal to the server, the protocol and its type qualifiers
won't make any difference.
In the client, it is best to use -[NSDistantObject
setProtocolForProxy:] to help the D.O. system avoid some overhead. If
you don't do that, then D.O. has to discover the interface of the
vended object by querying the server.
Lastly, you might want to use NSProtocolChecker in the server if your
vended object has some methods that a client should not be able to
invoke.
-Ken
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