public override int run(string[] args)
{
if (args.Length > 0)
{
Console.Error.WriteLine(appName() + ": too many arguments");
return(1);
}
InitialPrx initial = InitialPrxHelper.checkedCast(communicator().propertyToProxy("Initial.Proxy"));
if (initial == null)
{
Console.Error.WriteLine("invalid object reference");
return(1);
}
Console.Out.WriteLine();
Console.Out.WriteLine("Let's first transfer a simple object, for a class without");
Console.Out.WriteLine("operations, and print its contents. No factory is required");
Console.Out.WriteLine("for this.");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
Simple simple = initial.getSimple();
Console.Out.WriteLine("==> " + simple.message);
Console.Out.WriteLine();
Console.Out.WriteLine("Yes, this worked. Now let's try to transfer an object for a class");
Console.Out.WriteLine("with operations as type Demo.Printer, without installing a factory first.");
Console.Out.WriteLine("This should give us a `no factory' exception.");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
Printer printer;
PrinterPrx printerProxy;
try
{
initial.getPrinter(out printer, out printerProxy);
Console.Error.WriteLine("Did not get the expected NoValueFactoryException!");
return(1);
}
catch (Ice.NoValueFactoryException ex)
{
Console.Out.WriteLine("==> " + ex);
}
Console.Out.WriteLine();
Console.Out.WriteLine("Yep, that's what we expected. Now let's try again, but with");
Console.Out.WriteLine("installing an appropriate factory first. If successful, we print");
Console.Out.WriteLine("the object's content.");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
communicator().getValueFactoryManager().add(ValueFactory.create, Demo.Printer.ice_staticId());
initial.getPrinter(out printer, out printerProxy);
Console.Out.WriteLine("==> " + printer.message);
Console.Out.WriteLine();
Console.Out.WriteLine("Cool, it worked! Let's try calling the printBackwards() method");
Console.Out.WriteLine("on the object we just received locally.");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
Console.Out.Write("==> ");
printer.printBackwards();
Console.Out.WriteLine();
Console.Out.WriteLine("Now we call the same method, but on the remote object. Watch the");
Console.Out.WriteLine("server's output.");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
printerProxy.printBackwards();
Console.Out.WriteLine();
Console.Out.WriteLine("Next, we transfer a derived object from the server as a base");
Console.Out.WriteLine("object. Since we haven't yet installed a factory for the derived");
Console.Out.WriteLine("class, the derived class (Demo.DerivedPrinter) is sliced");
Console.Out.WriteLine("to its base class (Demo.Printer).");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
Printer derivedAsBase = initial.getDerivedPrinter();
Console.Out.WriteLine("==> The type ID of the received object is \"" + derivedAsBase.ice_id() + "\"");
Debug.Assert(derivedAsBase.ice_id().Equals(Demo.Printer.ice_staticId()));
Console.Out.WriteLine();
Console.Out.WriteLine("Now we install a factory for the derived class, and try again.");
Console.Out.WriteLine("Because we receive the derived object as a base object,");
Console.Out.WriteLine("we need to do a class cast to get from the base to the derived object.");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
communicator().getValueFactoryManager().add(ValueFactory.create, Demo.DerivedPrinter.ice_staticId());
derivedAsBase = initial.getDerivedPrinter();
DerivedPrinter derived = (DerivedPrinter)derivedAsBase;
Console.Out.WriteLine("==> class cast to derived object succeeded");
Console.Out.WriteLine("==> The type ID of the received object is \"" + derived.ice_id() + "\"");
Console.Out.WriteLine();
Console.Out.WriteLine("Let's print the message contained in the derived object, and");
Console.Out.WriteLine("call the operation printUppercase() on the derived object");
Console.Out.WriteLine("locally.");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
Console.Out.WriteLine("==> " + derived.derivedMessage);
Console.Out.Write("==> ");
derived.printUppercase();
Console.Out.WriteLine();
Console.Out.WriteLine("Now let's make sure that slice is preserved with [\"preserve-slice\"]");
Console.Out.WriteLine("metadata. We create a derived type on the client and pass it to the");
Console.Out.WriteLine("server, which does not have a factory for the derived type. We do a");
Console.Out.WriteLine("class cast to make sure we can still access the derived type when");
Console.Out.WriteLine("it has been returned from the server.");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
ClientPrinter clientp = new ClientPrinterI();
clientp.message = "a message 4 u";
communicator().getValueFactoryManager().add(ValueFactory.create, Demo.ClientPrinter.ice_staticId());
derivedAsBase = initial.updatePrinterMessage(clientp);
clientp = (ClientPrinter)derivedAsBase;
Console.Out.WriteLine("==> " + clientp.message);
Console.Out.WriteLine();
Console.Out.WriteLine("Finally, we try the same again, but instead of returning the");
Console.Out.WriteLine("derived object, we throw an exception containing the derived");
Console.Out.WriteLine("object.");
Console.Out.WriteLine("[press enter]");
Console.In.ReadLine();
try
{
initial.throwDerivedPrinter();
}
catch (DerivedPrinterException ex)
{
derived = ex.derived;
Debug.Assert(derived != null);
}
Console.Out.WriteLine("==> " + derived.derivedMessage);
Console.Out.Write("==> ");
derived.printUppercase();
Console.Out.WriteLine();
Console.Out.WriteLine("That's it for this demo. Have fun with Ice!");
initial.shutdown();
return(0);
}