src/utils/GenericFactory.hpp

/*
 * Copyright (C) 2000-2004  Object Oriented Parallel Simulation Engine (OOPSE) project
 * 
 * Contact: oopse@oopse.org
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 * All we ask is that proper credit is given for our work, which includes
 * - but is not limited to - adding the above copyright notice to the beginning
 * of your source code files, and to any copyright notice that you may distribute
 * with programs based on this work.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

/**
 * @file Vector3.hpp
 * @author Teng Lin
 * @date 09/14/2004
 * @version 1.0
 */
#ifndef UTIL_GENERICFACTORY_HPP
#define UTIL_GENERICFACTORY_HPP
#include <map>
#include <string>
namespace oopse {
template<class Product, typename ProductIdentType = std::string, typename Creator = Product* (*)() >
class GenericFactory{
    public:
        
        typedef std::map<ProductIdentType,  Creator*> CreatorMapType;
        typedef GenericFactory<Product, ProductIdentType, Creator> SelfType;
        static SelfType* getInstance() {
            if (instance_ == NULL) {
                instance_ = new GenericFactory<Product, ProductIdentType, Creator>();
            }

            return instance_;
        }
        
        //bool register( const ProductIdentType& id, Creator creator) {

            //insert method in std::map will return a pair<iterator, bool>. the second
            //element of this pair indicates whether the result of the operation
            //return creatorMap_.insert(CreatorMapType::value_type(id, creator)).second;
        //}

        bool unregister(const ProductIdentType& id) {
            
            return creatorMap_->erase(id) == 1; 

        }
        
        bool hasCreator( const ProductIdentType& id ) {
            CreatorMapType::iterator i;

            i = creatorMap_.find(id);

            if (i != creatorMap_.end()) {
                return true;
            } else {
                return false;
            }
        }

        //const std::string toString() {

        
        //}

        Product* createProduct( const ProductIdentType& id ) {
            CreatorMapType::iterator i;

            i = creatorMap_.find(id);

            if (i != creatorMap_.end()) {
                //call the function to create the product
                return (i->second)();
            } else {
                return NULL;
            }
        }
        
    private:
        GenericFactory(){}
        static SelfType* instance_;
        CreatorMapType creatorMap_;
};


#define REGISTER_CREATOR(factory, product, id) \
    product * create##product() {\
        return new product(); \
    }

}//namespace oopse
#endif //UTIL_GENERICFACTORY_HPP

Revision:	99
Committed:	Mon Oct 18 17:07:27 2004 UTC (21 years ago) by tim
File size:	3349 byte(s)
Log Message:	fix some bugs in Quaternion class
#	User	Rev	Content
1	tim	94	/*
2			* Copyright (C) 2000-2004 Object Oriented Parallel Simulation Engine (OOPSE) project
3			*
4			* Contact: oopse@oopse.org
5			*
6			* This program is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU Lesser General Public License
8			* as published by the Free Software Foundation; either version 2.1
9			* of the License, or (at your option) any later version.
10			* All we ask is that proper credit is given for our work, which includes
11			* - but is not limited to - adding the above copyright notice to the beginning
12			* of your source code files, and to any copyright notice that you may distribute
13			* with programs based on this work.
14			*
15			* This program is distributed in the hope that it will be useful,
16			* but WITHOUT ANY WARRANTY; without even the implied warranty of
17			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18			* GNU Lesser General Public License for more details.
19			*
20			* You should have received a copy of the GNU Lesser General Public License
21			* along with this program; if not, write to the Free Software
22			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23			*
24			*/
25
26			/**
27			* @file Vector3.hpp
28			* @author Teng Lin
29			* @date 09/14/2004
30			* @version 1.0
31			*/
32			#ifndef UTIL_GENERICFACTORY_HPP
33			#define UTIL_GENERICFACTORY_HPP
34			#include <map>
35			#include <string>
36	tim	99	namespace oopse {
37			template<class Product, typename ProductIdentType = std::string, typename Creator = Product* (*)() >
38	tim	94	class GenericFactory{
39			public:
40
41	tim	99	typedef std::map<ProductIdentType, Creator*> CreatorMapType;
42			typedef GenericFactory<Product, ProductIdentType, Creator> SelfType;
43			static SelfType* getInstance() {
44			if (instance_ == NULL) {
45			instance_ = new GenericFactory<Product, ProductIdentType, Creator>();
46			}
47	tim	94
48	tim	99	return instance_;
49			}
50
51			//bool register( const ProductIdentType& id, Creator creator) {
52	tim	94
53	tim	99	//insert method in std::map will return a pair<iterator, bool>. the second
54			//element of this pair indicates whether the result of the operation
55			//return creatorMap_.insert(CreatorMapType::value_type(id, creator)).second;
56			//}
57	tim	94
58	tim	99	bool unregister(const ProductIdentType& id) {
59
60			return creatorMap_->erase(id) == 1;
61
62			}
63	tim	94
64	tim	99	bool hasCreator( const ProductIdentType& id ) {
65			CreatorMapType::iterator i;
66	tim	94
67	tim	99	i = creatorMap_.find(id);
68	tim	94
69	tim	99	if (i != creatorMap_.end()) {
70			return true;
71			} else {
72			return false;
73			}
74			}
75
76			//const std::string toString() {
77
78	tim	94
79	tim	99	//}
80
81			Product* createProduct( const ProductIdentType& id ) {
82			CreatorMapType::iterator i;
83
84			i = creatorMap_.find(id);
85
86			if (i != creatorMap_.end()) {
87			//call the function to create the product
88			return (i->second)();
89			} else {
90			return NULL;
91			}
92			}
93
94	tim	94	private:
95			GenericFactory(){}
96	tim	99	static SelfType* instance_;
97			CreatorMapType creatorMap_;
98	tim	94	};
99
100
101	tim	99	#define REGISTER_CREATOR(factory, product, id) \
102			product * create##product() {\
103			return new product(); \
104			}
105
106			}//namespace oopse
107			#endif //UTIL_GENERICFACTORY_HPP
108