整理代码

util/FactoryManager.h

@@ -0,0 +1,79 @@
+#ifndef BE13A370_B199_43EC_A4E6_E2D4FD197D63
+#define BE13A370_B199_43EC_A4E6_E2D4FD197D63
+/*
+ *******************************************************************************
+ *                                   INCLUDE
+ *******************************************************************************
+ */
+#include "ClassAssistant.h"
+#include <map>
+#include <Poco/SharedPtr.h>
+#include <Poco/Format.h>
+
+namespace Util
+{
+/*
+ *******************************************************************************
+ *                                CLASS DECLARE
+ *******************************************************************************
+ */
+template <class T> class SimpleSelector
+{
+public:
+    static T select(T val)
+    {
+        return val;
+    }
+};
+
+template <class T, class TKey, class TSelector, class... TArgs> class FactoryManager
+{
+private:
+    class IFactory
+    {
+    public:
+        using Ptr = Poco::SharedPtr<IFactory>;
+        virtual ~IFactory()
+        {
+        }
+
+    public:
+        virtual T* create(TArgs... args) = 0;
+    };
+
+    template <class C> class Factory: public IFactory
+    {
+    public:
+        C* create(TArgs... args) override
+        {
+            return new C(args...);
+        }
+    };
+
+    using Factories = std::map<TKey, typename IFactory::Ptr>;
+
+public:
+    static T* create(TArgs... args)
+    {
+        TKey key = TSelector::select(args...);
+        if (_factories.find(key) == _factories.end())
+            throw Poco::NotFoundException(
+                Poco::format("FactoryManager: Factory '%s' does not exists.", Util::ClassAssistant::demangle<T>()),
+                -EINVAL);
+
+        return _factories[key]->create(args...);
+    }
+
+    template <class C> static void registerClass(TKey key)
+    {
+        _factories[key] = new Factory<C>();
+    }
+
+private:
+    static Factories _factories;
+};
+
+template <class T, class TKey, class TSelect, class... TArgs>
+typename FactoryManager<T, TKey, TSelect, TArgs...>::Factories FactoryManager<T, TKey, TSelect, TArgs...>::_factories;
+}
+#endif