oaCommonFactory.h

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// *****************************************************************************
// *****************************************************************************
// oaCommonFactory.h
//
// This file contains the definition of the Factory and FactoryBase classes. The 
// Factory class is used to implement the getClassObject entry function for 
// components. This implementation is hidden inside a shared library. The 
// FactoryBase class is the base class for the Factory class and it contains the 
// table of all existing Factory template instances. 
//
// *****************************************************************************
// Except as specified in the OpenAccess terms of use of Cadence or Silicon
// Integration Initiative, this material may not be copied, modified,
// re-published, uploaded, executed, or distributed in any way, in any medium,
// in whole or in part, without prior written permission from Cadence.
//
//                Copyright 2002-2005 Cadence Design Systems, Inc.
//                           All Rights Reserved.
//
//  $Author: icftcm $
//  $Revision: #1 $
//  $Date: 2010/08/09 $
//  $State: Exp $
// *****************************************************************************
// *****************************************************************************



#if !defined(oaCommonFactory_P)
#define oaCommonFactory_P



// *****************************************************************************
// Nested includes
// *****************************************************************************
#include "oaCommonIBase.h"



// *****************************************************************************
// Declare and define types in the oaCommon namespace
// *****************************************************************************
BEGIN_OA_COMMON_NAMESPACE



// *****************************************************************************
// Forward declare
// *****************************************************************************
class FactoryBaseMap;



// *****************************************************************************
// FactoryBase
// *****************************************************************************
class OA_COMMON_DLL_PVT FactoryBase : public IFactory {
public:
    virtual long            queryInterface(const Guid   &idIn,
                                           void         **iPtr);
    virtual unsigned long   addRef();
    virtual unsigned long   release();

    static oa::oaUInt4      getClassObject(const char   *classID,
                                           const Guid   &interfaceID,
                                           void         **ptr);

protected:
                            FactoryBase();

    static void             insertFactory(const char    *classID,
                                          FactoryBase   *factory);
    static void             eraseFactory(FactoryBase *factory);

private:
    oa::oaUInt4             refCount;

    static FactoryBaseMap   *factories;
};



// *****************************************************************************
// Factory
// *****************************************************************************
template<class T>
class Factory : public FactoryBase {
public:
                            Factory(const char *classID);

    oa::oaUInt4             createInstance(IBase        *reserved,
                                           const Guid   &interfaceID,
                                           void         **ptr);
                            ~Factory();
};



END_OA_COMMON_NAMESPACE

#endif

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