object_factory.h
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00001 /***********************************************************************
00002  * Software License Agreement (BSD License)
00003  *
00004  * Copyright 2008-2009  Marius Muja (mariusm@cs.ubc.ca). All rights reserved.
00005  * Copyright 2008-2009  David G. Lowe (lowe@cs.ubc.ca). All rights reserved.
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00013  * 1. Redistributions of source code must retain the above copyright
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00019  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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00030 
00031 #ifndef RTABMAP_FLANN_OBJECT_FACTORY_H_
00032 #define RTABMAP_FLANN_OBJECT_FACTORY_H_
00033 
00034 #include <map>
00035 
00036 namespace rtflann
00037 {
00038 
00039 class CreatorNotFound
00040 {
00041 };
00042 
00043 template<typename BaseClass,
00044          typename UniqueIdType,
00045          typename ObjectCreator = BaseClass* (*)()>
00046 class ObjectFactory
00047 {
00048     typedef ObjectFactory<BaseClass,UniqueIdType,ObjectCreator> ThisClass;
00049     typedef std::map<UniqueIdType, ObjectCreator> ObjectRegistry;
00050 
00051     // singleton class, private constructor
00052     ObjectFactory() {}
00053 
00054 public:
00055 
00056     bool subscribe(UniqueIdType id, ObjectCreator creator)
00057     {
00058         if (object_registry.find(id) != object_registry.end()) return false;
00059 
00060         object_registry[id] = creator;
00061         return true;
00062     }
00063 
00064     bool unregister(UniqueIdType id)
00065     {
00066         return object_registry.erase(id) == 1;
00067     }
00068 
00069     ObjectCreator create(UniqueIdType id)
00070     {
00071         typename ObjectRegistry::const_iterator iter = object_registry.find(id);
00072 
00073         if (iter == object_registry.end()) {
00074             throw CreatorNotFound();
00075         }
00076 
00077         return iter->second;
00078     }
00079 
00080     static ThisClass& instance()
00081     {
00082         static ThisClass the_factory;
00083         return the_factory;
00084     }
00085 private:
00086     ObjectRegistry object_registry;
00087 };
00088 
00089 }
00090 
00091 #endif /* FLANN_OBJECT_FACTORY_H_ */


rtabmap
Author(s): Mathieu Labbe
autogenerated on Thu Jun 6 2019 21:59:21