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root/OpenMD/trunk/src/utils/GenericFactory.hpp
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Comparing trunk/src/utils/GenericFactory.hpp (file contents):
Revision 94 by tim, Mon Oct 18 05:23:21 2004 UTC vs.
Revision 99 by tim, Mon Oct 18 17:07:27 2004 UTC

# Line 33 | Line 33
33   #define UTIL_GENERICFACTORY_HPP
34   #include <map>
35   #include <string>
36 <
37 < template<class Product, typename Creator, typename ProductIdentType = std::string>
36 > namespace oopse {
37 > template<class Product, typename ProductIdentType = std::string, typename Creator = Product* (*)() >
38   class GenericFactory{
39      public:
40          
41 <        typedef map<ProductIdentType,  Creator*> CreatorMapType;
42 <        ~GenericFactory();
41 >        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  
48 <        static GenericFactory* getInstance();
48 >            return instance_;
49 >        }
50 >        
51 >        //bool register( const ProductIdentType& id, Creator creator) {
52  
53 <        bool register(CreatorType*  creator);
53 >            //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  
58 <        bool unregister();
58 >        bool unregister(const ProductIdentType& id) {
59 >            
60 >            return creatorMap_->erase(id) == 1;
61 >
62 >        }
63          
64 <        bool hasCreator( const ProductIdentType& id );
64 >        bool hasCreator( const ProductIdentType& id ) {
65 >            CreatorMapType::iterator i;
66  
67 <        const std::string toString();
67 >            i = creatorMap_.find(id);
68  
69 <        Product* createProduct( const ProductIdentType& id );
69 >            if (i != creatorMap_.end()) {
70 >                return true;
71 >            } else {
72 >                return false;
73 >            }
74 >        }
75 >
76 >        //const std::string toString() {
77 >
78          
79 +        //}
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      private:
95          GenericFactory(){}
96 <        static GenericFactory* instance_;
97 <        map<string,  Creator*> creatorMap_;
96 >        static SelfType* instance_;
97 >        CreatorMapType creatorMap_;
98   };
99  
62 – typedef GenericFactory<ForceFieldParser, > ForceFiledParserFactory;
63 – #endif
100  
101 + #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 +

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