TriggeringEventEvaluatorFactory.cpp
Go to the documentation of this file.00001 #include <log4cpp/TriggeringEventEvaluatorFactory.hh> 00002 #include <stdexcept> 00003 00004 namespace log4cpp 00005 { 00006 static TriggeringEventEvaluatorFactory* evaluators_factory_ = 0; 00007 std::auto_ptr<TriggeringEventEvaluator> create_level_evaluator(const FactoryParams& params); 00008 00009 TriggeringEventEvaluatorFactory& TriggeringEventEvaluatorFactory::getInstance() 00010 { 00011 if (!evaluators_factory_) 00012 { 00013 std::auto_ptr<TriggeringEventEvaluatorFactory> af(new TriggeringEventEvaluatorFactory); 00014 af->registerCreator("level", &create_level_evaluator); 00015 evaluators_factory_ = af.release(); 00016 } 00017 00018 return *evaluators_factory_; 00019 } 00020 00021 void TriggeringEventEvaluatorFactory::registerCreator(const std::string& class_name, create_function_t create_function) 00022 { 00023 const_iterator i = creators_.find(class_name); 00024 if (i != creators_.end()) 00025 throw std::invalid_argument("Creator for Triggering event evaluator with type name '" + class_name + "' allready registered"); 00026 00027 creators_[class_name] = create_function; 00028 } 00029 00030 std::auto_ptr<TriggeringEventEvaluator> TriggeringEventEvaluatorFactory::create(const std::string& class_name, const params_t& params) 00031 { 00032 const_iterator i = creators_.find(class_name); 00033 if (i == creators_.end()) 00034 throw std::invalid_argument("There is no triggering event evaluator with type name '" + class_name + "'"); 00035 00036 return (*i->second)(params); 00037 } 00038 00039 bool TriggeringEventEvaluatorFactory::registered(const std::string& class_name) const 00040 { 00041 return creators_.end() != creators_.find(class_name); 00042 } 00043 } 00044