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// **********************************************************************
//
// Copyright (c) 2003
// ZeroC, Inc.
// Billerica, MA, USA
//
// All Rights Reserved.
//
// Ice is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License version 2 as published by
// the Free Software Foundation.
//
// **********************************************************************
#include <Ice/Ice.h>
#include <Value.h>
#include <ObjectFactory.h>
using namespace std;
int
run(int argc, char* argv[], const Ice::CommunicatorPtr& communicator)
{
Ice::PropertiesPtr properties = communicator->getProperties();
const char* refProperty = "Value.Initial";
std::string ref = properties->getProperty(refProperty);
if(ref.empty())
{
cerr << argv[0] << ": property `" << refProperty << "' not set" << endl;
return EXIT_FAILURE;
}
Ice::ObjectPrx base = communicator->stringToProxy(ref);
InitialPrx initial = InitialPrx::checkedCast(base);
if(!initial)
{
cerr << argv[0] << ": invalid object reference" << endl;
return EXIT_FAILURE;
}
char c;
cout << '\n'
<< "Let's first transfer a simple object, for a class without\n"
<< "operations, and print its contents. No factory is required\n"
<< "for this.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
SimplePtr simple = initial->getSimple();
cout << "==> " << simple->message << endl;
cout << '\n'
<< "Ok, this worked. Now let's try to transfer an object for a class\n"
<< "with operations, without installing a factory first. This should\n"
<< "give us a `no factory' exception.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
PrinterPtr printer;
PrinterPrx printerProxy;
try
{
initial->getPrinter(printer, printerProxy);
}
catch(const Ice::NoObjectFactoryException& ex)
{
cout << "==> " << ex << endl;
}
cout << '\n'
<< "Yep, that's what we expected. Now let's try again, but with\n"
<< "installing an appropriate factory first. If successful, we print\n"
<< "the object's content.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
Ice::ObjectFactoryPtr factory = new ObjectFactory;
communicator->addObjectFactory(factory, "::Printer");
initial->getPrinter(printer, printerProxy);
cout << "==> " << printer->message << endl;
cout << '\n'
<< "Cool, it worked! Let's try calling the printBackwards() method\n"
<< "on the object we just received locally.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
cout << "==> ";
printer->printBackwards();
cout << '\n'
<< "Now we call the same method, but on the remote object. Watch the\n"
<< "server's output.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
printerProxy->printBackwards();
cout << '\n'
<< "Next, we transfer a derived object from the server as base\n"
<< "object. Since we didn't install a factory for the derived\n"
<< "class yet, we will get another `no factory' exception.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
PrinterPtr derivedAsBase;
try
{
derivedAsBase = initial->getDerivedPrinter();
assert(false);
}
catch(const Ice::NoObjectFactoryException& ex)
{
cout << "==> " << ex << endl;
}
cout << '\n'
<< "Now we install a factory for the derived class, and try again.\n"
<< "We won't get a `no factory' exception anymore, but since we\n"
<< "receive the derived object as base object, we need to do a\n"
<< "dynamic_cast<> to get from the base to the derived object.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
communicator->addObjectFactory(factory, "::DerivedPrinter");
derivedAsBase = initial->getDerivedPrinter();
DerivedPrinterPtr derived = DerivedPrinterPtr::dynamicCast(derivedAsBase);
assert(derived);
cout << "==> dynamic_cast<> to derived object succeded" << endl;
cout << '\n'
<< "Let's print the message contained in the derived object, and\n"
<< "call the operation printUppercase() on the derived object\n"
<< "locally.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
cout << "==> " << derived->derivedMessage << endl;
cout << "==> ";
derived->printUppercase();
cout << '\n'
<< "Finally, we try the same again, but instead of returning the\n"
<< "derived object, we throw an exception containing the derived\n"
<< "object.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
try
{
initial->throwDerivedPrinter();
}
catch(const DerivedPrinterException& ex)
{
derived = ex.derived;
assert(derived);
}
cout << "==> " << derived->derivedMessage << endl;
cout << "==> ";
derived->printUppercase();
cout << '\n'
<< "That's it for this demo. Have fun with Ice!\n";
return EXIT_SUCCESS;
}
int
main(int argc, char* argv[])
{
int status;
Ice::CommunicatorPtr communicator;
try
{
Ice::PropertiesPtr properties = Ice::createProperties(argc, argv);
properties->load("config");
communicator = Ice::initializeWithProperties(argc, argv, properties);
status = run(argc, argv, communicator);
}
catch(const Ice::Exception& ex)
{
cerr << ex << endl;
status = EXIT_FAILURE;
}
if(communicator)
{
try
{
communicator->destroy();
}
catch(const Ice::Exception& ex)
{
cerr << ex << endl;
status = EXIT_FAILURE;
}
}
return status;
}
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