<![CDATA[
/*
Copyright (c) 1999, Gary Yihsiang Hsiao. All Rights Reserved.
bugs report to: ghsiao@rbcds.com or ghsiao@netzero.net
Permission to use, copy, modify, and distribute this software
for NON-COMMERCIAL purposes and without fee
is hereby granted provided that this copyright notice
appears in all copies. This software is distributed on an 'as is'
basis without warranty.
Release: 1.0 15-July-1999
*/
#ifndef GFACTORY_H
#define GFACTORY_H
#include <map>
// Factory class
// Maps Class POBObj objects to create() constructors
// Uses RTTI interface
template <class T> class GFactory
{
public:
typedef T* (*PFUNC)(void);
typedef map<string, PFUNC, less<string> > FMAP;
virtual void add_function(const string&, PFUNC);
virtual T* create(const string&);
virtual bool findClassTypeId(const string&);
private:
FMAP _fmap;
};
template<class T>
void GFactory<T>::add_function(const string& clsid, PFUNC pfc)
{
if(_fmap.find(clsid) == _fmap.end())
_fmap[clsid] = pfc;
}
template<class T>
bool GFactory<T>::findClassTypeId(const string& clsid)
{
if(_fmap.find(clsid) != _fmap.end()) return true;
else return false;
}
template<class T>
T* GFactory<T>::create(const string& clsid)
{
FMAP::iterator itr;
if((itr = _fmap.find(clsid)) != _fmap.end())
return (((*itr).second)());
else
return (T*)0;
}
#endif
]]>