OpenCV 4.5.3(日本語機械翻訳)
object_factory.h
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2 * Software License Agreement (BSD License)
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4 * Copyright 2008-2009 Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
5 * Copyright 2008-2009 David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
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30
31 #ifndef OPENCV_FLANN_OBJECT_FACTORY_H_
32 #define OPENCV_FLANN_OBJECT_FACTORY_H_
33
35
36 #include <map>
37
38 namespace cvflann
39{
40
41 class CreatorNotFound
42{
43};
44
45 template<typename BaseClass,
46 typename UniqueIdType,
47 typename ObjectCreator = BaseClass* (*)()>
48 class ObjectFactory
49{
50 typedef ObjectFactory<BaseClass,UniqueIdType,ObjectCreator> ThisClass;
51 typedef std::map<UniqueIdType, ObjectCreator> ObjectRegistry;
52
53 // singleton class, private constructor
54 ObjectFactory() {}
55
56 public:
57
58 bool subscribe(UniqueIdType id, ObjectCreator creator)
59 {
60 if (object_registry.find(id) != object_registry.end()) return false;
61
62 object_registry[id] = creator;
63 return true;
64 }
65
66 bool unregister(UniqueIdType id)
67 {
68 return object_registry.erase(id) == 1;
69 }
70
71 ObjectCreator create(UniqueIdType id)
72 {
73 typename ObjectRegistry::const_iterator iter = object_registry.find(id);
74
75 if (iter == object_registry.end()) {
76 throw CreatorNotFound();
77 }
78
79 return iter->second;
80 }
81
82 static ThisClass& instance()
83 {
84 static ThisClass the_factory;
85 return the_factory;
86 }
87 private:
88 ObjectRegistry object_registry;
89};
90
91}
92
94
95 #endif /* OPENCV_FLANN_OBJECT_FACTORY_H_ */
構築: doxygen 1.9.2