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#include "stdafx.h"
#include "Container.h"
#include "Lifetimes.h"
#include "RegisteredComponent.h"
#include "Registry.h"
#include "SingletonInstanceFactory.h"
#include "ThreadScopeInstanceFactory.h"
#include "TransientInstanceFactory.h"
void swap(_Inout_ Container &left, _Inout_ Container &right)
{
using std::swap;
swap(left._factoriesByLifetime, right._factoriesByLifetime);
swap(left._factoriesByTypeName, right._factoriesByTypeName);
swap(left._injectedInstances, right._injectedInstances);
}
Container::Container() :
_injectedInstances()
, _factoriesByLifetime()
, _factoriesByTypeName()
{
_factoriesByLifetime[Lifetimes::Singleton] = std::make_shared<SingletonInstanceFactory>();
_factoriesByLifetime[Lifetimes::Thread] = std::make_shared<ThreadScopeInstanceFactory>();
_factoriesByLifetime[Lifetimes::Transient] = std::make_shared<TransientInstanceFactory>();
}
Container::Container(_In_ const Registry ®istry) :
Container()
{
registry.Register(*this);
}
Container::Container(_In_ const Container &other) :
_injectedInstances(other._injectedInstances)
, _factoriesByLifetime(other._factoriesByLifetime)
, _factoriesByTypeName(other._factoriesByTypeName)
{
}
Container::Container(_In_ Container &&other) :
Container()
{
swap(*this, other);
}
Container::~Container()
{
}
Container &Container::operator =(_In_ Container other)
{
swap(*this, other);
return *this;
}
void Container::Initialize(_In_ const Registry ®istry)
{
registry.Register(*this);
}
std::vector<RegisteredComponent> Container::GetRegisteredComponents() const
{
std::vector<RegisteredComponent> result;
for (const std::pair<Lifetimes::Lifetime, std::shared_ptr<IInstanceFactory>> &pair : _factoriesByLifetime)
{
std::vector<RegisteredComponent> components = pair.second->GetRegisteredComponents();
result.insert(result.end(), components.cbegin(), components.cend());
}
return result;
}
void Container::Register(_In_ const std::string &interfaceTypeName, _In_ const std::shared_ptr<IInstantiator> &implementationCreator, _In_ const Lifetimes::Lifetime lifetime)
{
auto pFactoryPair = _factoriesByLifetime.find(lifetime);
if (pFactoryPair == _factoriesByLifetime.end())
{
std::string message(__LOC_A__ "Could not find factory for lifetime '");
message += Lifetimes::GetName(lifetime);
message += "'.";
std::exception e(message.c_str());
throw e;
}
else
{
Remove(interfaceTypeName);
std::shared_ptr<IInstanceFactory> pFactory = pFactoryPair->second;
pFactory->SetCreationStrategy(interfaceTypeName, implementationCreator);
_factoriesByTypeName[interfaceTypeName] = pFactory;
}
}
void Container::Remove(_In_ const std::string &interfaceTypeName)
{
_factoriesByLifetime[Lifetimes::Singleton]->Remove(interfaceTypeName);
_factoriesByLifetime[Lifetimes::Thread]->Remove(interfaceTypeName);
_factoriesByLifetime[Lifetimes::Transient]->Remove(interfaceTypeName);
}
std::shared_ptr<void> Container::GetInstance(_In_ const std::string &interfaceTypeName) const
{
std::shared_ptr<void> result;
auto injectedItem = _injectedInstances.find(interfaceTypeName);
if (injectedItem != _injectedInstances.end())
{
result = injectedItem->second;
}
else
{
auto pFactoryPair = _factoriesByTypeName.find(interfaceTypeName);
if (pFactoryPair == _factoriesByTypeName.end())
{
std::string message(__LOC_A__ "Could not find instance factory for interface '");
message += interfaceTypeName;
message += "'.";
std::exception e(message.c_str());
throw e;
}
else
{
std::shared_ptr<IInstanceFactory> pFactory = pFactoryPair->second;
result = pFactory->GetInstance(*this, interfaceTypeName);
}
}
return result;
}
void Container::Inject(_In_ const std::string &interfaceTypeName, _In_ const std::shared_ptr<void> &instance)
{
_injectedInstances[interfaceTypeName] = instance;
}
void Container::EjectAllInstancesOf(_In_ const std::string &interfaceTypeName)
{
_injectedInstances.erase(interfaceTypeName);
for (const auto &item : _factoriesByLifetime)
{
item.second->RemoveInstance(interfaceTypeName);
}
}