Experimental Physics and
Industrial Control System

Jeff Hill <[email protected]> · Wed, 16 Jul 1997 16:27:55 -0600

> I propose that we add dbr_ulong_t and dbr_ushort_t to the CA client API.
> Requests for these types would of course be refused when they are
> issued to old servers.

Of course the problem here is that some existing clients will not be prepared
to handle new native data types that were not in the original API. This
would not be backwards compatible. Perhaps the solution is to add a routine
to the client API that disables backwards compatible promotion when the
new types are installed. This routine would only be called only by clients that 
have
been properly updated so that they are able to handle the new native types.
Backwards compatible promotion would be moved to the client lib when the new
data types are installed.

Jeff

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System