server.h

一套Orbacus4.X下有关Corba的学习例程

#ifndef server_HH_
#define server_HH_

#include <map>

#ifdef HAVE_STDLIB_H
#   include <stdlib.h>
#endif

#include "CCS_skel.h"

#ifdef _MSC_VER
using namespace std;
#endif

class Controller_impl;

class Thermometer_impl : public virtual POA_CCS::Thermometer {
public:
    // IDL attributes
    virtual CCS::ModelType  model()
                                throw(CORBA::SystemException);
    virtual CCS::AssetType  asset_num()
                                throw(CORBA::SystemException);
    virtual CCS::TempType   temperature()
                                throw(CORBA::SystemException);
    virtual CCS::LocType    location()
                                throw(CORBA::SystemException);
    virtual void            location(const char * loc)
                                throw(CORBA::SystemException);
    
    // Constructor and destructor
    Thermometer_impl(CCS::AssetType anum, const char * location);
    virtual ~Thermometer_impl();

    static Controller_impl *    m_ctrl; // My controller

protected:
    const CCS::AssetType        m_anum; // My asset number

private:
    // Helper functions
    CCS::ModelType  get_model();
    CCS::TempType   get_temp();
    CCS::LocType    get_loc();
    void            set_loc(const char * new_loc);

    // Copy and assignment not supported
    Thermometer_impl(const Thermometer_impl &);
    void operator=(const Thermometer_impl &);
};

class Thermostat_impl :
    public virtual POA_CCS::Thermostat,
    public virtual Thermometer_impl {
public:
    // IDL operations
    virtual CCS::TempType   get_nominal()
                                throw(CORBA::SystemException);
    virtual CCS::TempType   set_nominal(
                                CCS::TempType new_temp
                            ) throw(
                                CORBA::SystemException,
                                CCS::Thermostat::BadTemp
                            );

    // Constructor and destructor
    Thermostat_impl(
        CCS::AssetType  anum,
        const char *    location,
        CCS::TempType   nominal_temp
    );
    virtual ~Thermostat_impl() {}

private:
    // Helper functions
    CCS::TempType   get_nominal_temp();
    CCS::TempType   set_nominal_temp(CCS::TempType new_temp)
                        throw(CCS::Thermostat::BadTemp);

    // Copy and assignment not supported
    Thermostat_impl(const Thermostat_impl &);
    void operator=(const Thermostat_impl &);
};

class Controller_impl : public virtual POA_CCS::Controller {
public:
    // IDL operations
    virtual CCS::Controller::ThermometerSeq *
                list() throw(CORBA::SystemException);
    virtual void
                find(CCS::Controller::SearchSeq & slist)
                    throw(CORBA::SystemException);
    virtual void
                change(
                    const CCS::Controller::ThermostatSeq & tlist,
                    CORBA::Short                           delta
                ) throw(
                    CORBA::SystemException,
                    CCS::Controller::EChange
                );

    // Constructor and destructor
    Controller_impl() {}
    virtual ~Controller_impl() {}

    // Helper functions to allow thermometers and
    // thermostats to add themselves to the m_assets map
    // and to remove themselves again.
    void    add_impl(CCS::AssetType anum, Thermometer_impl * tip);
    void    remove_impl(CCS::AssetType anum);

private:
    // Map of known servants
    typedef map<CCS::AssetType, Thermometer_impl *> AssetMap;
    AssetMap m_assets;

    // Copy and assignment not supported
    Controller_impl(const Controller_impl &);
    void operator=(const Controller_impl &);

    // Function object for the find_if algorithm to search for
    // devices by location and model string.
    class StrFinder {
    public:
        StrFinder(
            CCS::Controller::SearchCriterion    sc,
            const char *                        str
        ) : m_sc(sc), m_str(str) {}
        bool operator()(
            pair<const CCS::AssetType, Thermometer_impl *> & p
        ) const
        {
            switch (m_sc) {
            case CCS::Controller::LOCATION:
                return strcmp(p.second->location(), m_str) == 0;
                break;
            case CCS::Controller::MODEL:
                return strcmp(p.second->model(), m_str) == 0;
                break;
            default:
                abort();    // Precondition violation
            }
            return 0;       // Stops compiler warning
        }
    private:
        CCS::Controller::SearchCriterion    m_sc;
        const char *                        m_str;
    };
};

#endif