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Translated few comments [#METR-2944].

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Alexey Milovidov 2016-07-10 02:37:29 +03:00
parent fbc7c1f40a
commit 3a6208c6d0
1 changed files with 6 additions and 6 deletions
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12
dbms/include/DB/Functions/FunctionFactory.h
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@ -10,23 +10,23 @@ namespace DB
class Context; class Context;
/** Позволяет получить функцию по имени. /** Creates function by name.
* Функция при создании также может использовать для инициализации (например, захватить shared_ptr) * Function could use for initialization (take ownership of shared_ptr, for example)
* какие-нибудь справочники, находящиеся в Context-е. * some dictionaries from Context.
*/ */
class FunctionFactory : public Singleton<FunctionFactory> class FunctionFactory : public Singleton<FunctionFactory>
{ {
friend class StorageSystemFunctions; friend class StorageSystemFunctions;
private: private:
typedef FunctionPtr (*Creator)(const Context & context); /// Не std::function, так как меньше indirection и размер объекта. typedef FunctionPtr (*Creator)(const Context & context); /// Not std::function, for lower object size and less indirection.
std::unordered_map<String, Creator> functions; std::unordered_map<String, Creator> functions;
public: public:
FunctionFactory(); FunctionFactory();
FunctionPtr get(const String & name, const Context & context) const; /// Кидает исключение, если не нашлось. FunctionPtr get(const String & name, const Context & context) const; /// Throws an exception if not found.
FunctionPtr tryGet(const String & name, const Context & context) const; /// Возвращает nullptr, если не нашлось. FunctionPtr tryGet(const String & name, const Context & context) const; /// Returns nullptr if not found.
template <typename F> void registerFunction() template <typename F> void registerFunction()
{ {