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// **********************************************************************
//
// Copyright (c) 2001
// MutableRealms, Inc.
// Huntsville, AL, USA
//
// All Rights Reserved
//
// **********************************************************************
#include <Ice/Ice.h>
#include <Value.h>
#include <Factory.h>
using namespace std;
int
run(int argc, char* argv[], Ice::CommunicatorPtr communicator)
{
Ice::PropertiesPtr properties = communicator->getProperties();
string ref = properties->getProperty("Value.Initial");
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 value, for a class without\n"
<< "operations. No factory is required for this.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
SimplePtr simple = initial->simple();
cout << "==> " << simple->_message << endl;
cout << '\n'
<< "Ok, this worked. Now let's try to transfer a value for a class\n"
<< "with operations, without first installing a factory. This\n"
<< "should give us a `no factory' exception.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
PrinterPtr printer;
PrinterPrx printerProxy;
try
{
initial->printer(printer, printerProxy);
}
catch(const Ice::NoFactoryException& 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.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
Ice::ValueFactoryPtr factory = new Factory;
communicator->installValueFactory(factory, "::Printer");
initial->printer(printer, printerProxy);
cout << "==> " << printer->_message << endl;
cout << '\n'
<< "Cool, it worked! Let's try calling the printBackwards() method\n"
<< "locally.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
cout << "==> ";
printer->printBackwards();
cout << '\n'
<< "Now we call the same method 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, our object will be truncated, and a dynamic_cast<> to\n"
<< "get the derived object from the base object will fail.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
PrinterPtr derivedAsBase = initial->derivedPrinter();
assert(!DerivedPrinterPtr::dynamicCast(derivedAsBase));
cout << "==> dynamic_cast<> to derived object failed" << endl;
cout << '\n'
<< "We can of course still use the derived object as base object.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
cout << "==> " << derivedAsBase->_message << endl;
cout << "==> ";
derivedAsBase->printBackwards();
cout << '\n'
<< "Now we install the factory for the derived object, and try\n"
<< "again.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
communicator->installValueFactory(factory, "::DerivedPrinter");
derivedAsBase = initial->derivedPrinter();
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 it as an exception.\n"
<< "[press enter]\n";
cin.getline(&c, 1);
try
{
initial->throwDerivedPrinter();
}
catch(const PrinterPtrE& ex)
{
const PrinterPtr& p = ex;
derived = DerivedPrinterPtr::dynamicCast(p);
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::loadProperties("config");
communicator = Ice::initializeWithProperties(argc, argv, properties);
status = run(argc, argv, communicator);
}
catch(const Ice::LocalException& ex)
{
cerr << ex << endl;
status = EXIT_FAILURE;
}
if (communicator)
{
try
{
communicator->destroy();
}
catch(const Ice::LocalException& ex)
{
cerr << ex << endl;
status = EXIT_FAILURE;
}
}
return status;
}
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