Thu Apr 20 10:12:12 CEST 2000
On 20 Apr 2000, Luke Gorrie wrote:
> Michael Skowronski <mskow@REDACTED> writes:
> > Hello,
> > does anyone have a simple example of how to connect a java visibroker
> > client to an orber service?
> I have, though I used JacORB rather than
> Visibroker. http://220.127.116.11:2000/get?node=orber+quickstart
Another way to setup a connection is to use InitialReferences.idl and
follow the example in Orber user's guide 9, but don't compile
cos_naming.idl (included since the example is based on OrbixWeb2.*, which
didn't support 'pragma prefix' until 3.*). The code below illustrates a
public class Client
public static void main(String args)
org.omg.CORBA.Object nsRef, objRef, initRef;
Orber.InitialReference ir = new Orber.InitialReference();
Orber.InitialReferences init = null;
String srvHost = new String(args);
Integer srvPort = new Integer(args);
ORB orb = ORB.init(args, null);
//The next line equals "reading IOR from file" (see Luke's link)
String s = ir.stringified_ior(srvHost, srvPort.intValue());
initRef = orb.string_to_object(s);
init = Orber.InitialReferencesHelper.narrow(initRef);
// Fetch name service reference.
nsRef = init.get("NameService");
nsContext = NamingContextHelper.narrow(nsRef);
// Now you can use 'resolve' etc and access objects
... cut ...
The OMG published two preliminary Interoperable-NamingServices; Orber
supports one (IBM's). Unfortunately ;-), the next CORBA specification
contains the one we're currently not supporting. The example above, is
based on the IBM-interoperable naming service (also supported by
JavaIDL, and ...?!).
IMHO, if you intend to start a number of servers, it's easier to just
store just one reference, i.e., the NameService.
You should also consult:
* Orber User's Guide, 10, "Orber Stubs/Skeletons"
* Orber Refernce Manual, "Module_Interface"
These chapters includes example code on how to implement your
'Module_Interface_impl.erl' file, e.g., functions which must be
implemented. Depending on what type of server you intend to implement, it
may be a good idea to use oe_create_link/2 or oe_create/2. The second
argument, 'Options', is usefull (and more features to come :-).
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