class factory, it searches the array for a template with a matching CLSID. Assuming it finds one, it creates a class factory that holds a pointer to the matching template. When the client callsIClassFactory::CreateInstance, the class factory calls the instantiation function defined in the ...
pDllGetClassObject GetClassObject = (pDllGetClassObject)::MemoryGetProcAddress(module,"DllGetClassObject");returnGetClassObject(clsid,iid,ppv); }// Create class factory.CFactory* pFactory =newCFactory;// Reference count set to 1// in constructorif(pFactory ==NULL) {returnE_OUTOFMEMORY ; }...
Product* (*create_product)(struct Factory*); } Factory; // define specific factoryA class typedef struct FactoryA { Factory factory; } FactoryA; // inplement factoryA create_product function Product* factoryA_create_product(Factory* factory) { Product* product = (Product*)malloc(sizeof(Prod...
This class provides a template used by the default class factory code. Create oneCFactoryTemplateobject in an array for every object class so that the default class factory code can create new instances. This class holds the name of the object, the object's class identifier (CLSID), and a ...
class Factory { public: // 获取产品 virtual Prodect* getProdect() = 0; };// 具体工厂类-苹果 class AppleFactory : public Factory { public: // 获取产品 virtual Prodect* getProdect() { Prodect* prodect = new AppleProdect(5); ...
{cout<<"Create productB"<<endl;}};classProductC:publicProduct{public:voidprintf(){cout<<"Create productC"<<endl;}};/* 工厂类 */classFactory{public:Product*CreateProduct(ProductType_t type);};Product*Factory::CreateProduct(ProductType_t type){Product*a=NULL;switch(type){caseTypeA:a=new...
//典型的具体产品类代码:classConcreteProductA : Product {//实现业务方法publicoverridevoidMethodDiff() {//业务方法的实现} } //典型的工厂类代码:classFactory {//静态工厂方法publicstaticProduct GetProduct(stringarg) { Product product=null;if(arg.Equals("A")) ...
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对象创建模式 通过“对象创建” 模式绕开new,来避免对象创建(new)过程中所导致的紧耦合(依赖具体类),从而支持对象创建的稳定。它是接口抽象之后的第一步工作。 典型模式 Factory Method Abstract Factory Prototype Builder Abstract Fact