helloimpl.cxx

这是经典的CORBA程序

//-----------------------------------------------------------------------------
// Copyright (c) 2003-2020 EBUPT INFO CO.,LTD
//-----------------------------------------------------------------------------


//
// Servant which implements the Hello interface.
//

#include <omg/orb.hh>
#include <stdlib.h>
#include <it_cal/iostream.h>
#include "HelloImpl.h"
IT_USING_NAMESPACE_STD
#include "it_print_funcs.h"
#include "it_random_funcs.h"

// Declare the global ORB defined in the server main file.
//
extern CORBA::ORB_var
global_orb;

// _create() -- create a new servant.
// Hides the difference between direct inheritance and tie servants
// For direct inheritance, simple create and return an instance of the servant.
// For tie, creates an instance of the tied class and the tie, return the tie.
//
POA_Hello*
HelloImpl::_create(PortableServer::POA_ptr the_poa)
{
    return new HelloImpl(the_poa);
}


// HelloImpl constructor
//
// Note: since we use virtual inheritance, we must include an
// initialiser for all the virtual base class constructors that
// require arguments, even those that we inherit indirectly.
//
HelloImpl::HelloImpl(
    PortableServer::POA_ptr the_poa
) :
    IT_ServantBaseOverrides(the_poa)
{
    // Intentionally empty.
}


// ~HelloImpl destructor.
//
HelloImpl::~HelloImpl()
{
    // Intentionally empty.
    //
}


// getGreeting() -- Implements IDL operation "Hello::getGreeting".
//
char*
HelloImpl::getGreeting() IT_THROW_DECL((
    CORBA::SystemException
))
{
    cout << "HelloImpl::getGreeting(): called." << endl;
    char*                           _result;


    // Assign values to all the "inout" and "out"
    // parameters, and return value, if any.
    //

    // return value (string)
    //
    _result = CORBA::string_dup("Hello World!");

    // Diagnostics: print the values of "out" and "inout"
    // parameters, and the return value, if any.
    //
    cout << "HelloImpl::getGreeting(): returning..." << endl;
    cout << "    _result = ";
    global_print->print_string(cout, _result, 1);
    cout << endl;

    // Return normally.
    //
    return _result;
}