DependInject< SRV >::ServiceInstance< IMP > Class Template Reference

#include "lib/depend-inject.hpp"

Description

template<class SRV>
template<class IMP = SRV>
class lib::DependInject< SRV >::ServiceInstance< IMP >

Configuration handle to expose a service implementation through the Depend<SRV> front-end.

This non-copyable (but movable) handle shall be planted within the context operating the service to be exposed. It will immediately create (in RAII style) and manage a heap-allocated instance of the subclass IMP and expose a baseclass pointer to this specific instance through Depend<SRV>. Moreover, the implementation subclass can be accessed through this handle, which acts as smart-ptr. When the handle goes out of scope, the implementation instance is destroyed and the access through Depend<SRV> is closed and inhibited, to prevent on-demand creation of a baseclass SRV singleton.

Template Parameters

IMP	concrete service implementation subclass to build, manage and expose.

Exceptions

error::Logic

(LUMIERA_ERROR_LIFECYCLE) when the default factory has already been invoked at the point when calling this (re)configuration function.

Definition at line 202 of file depend-inject.hpp.

Public Types
enum	StartMode { NOT_YET_STARTED }

Public Member Functions
template<typename... ARGS>
	ServiceInstance (ARGS &&...ctorArgs)
	ServiceInstance (StartMode)
	create in deactivated state. More...
template<typename... ARGS>
IMP &	createInstance (ARGS &&...ctorArgs)
	operator bool () const
IMP &	operator* () const
IMP *	operator-> () const
void	shutdown () noexcept

Private Attributes
std::unique_ptr< IMP >	instance_

Additional Inherited Members
Private Member Functions inherited from MoveOnly
	MoveOnly (MoveOnly &&)=default
	MoveOnly (MoveOnly const &)=delete
MoveOnly &	operator= (MoveOnly &&)=delete
MoveOnly &	operator= (MoveOnly const &)=delete

Constructor & Destructor Documentation

ServiceInstance()

ServiceInstance ( StartMode  )

inline

create in deactivated state.

Can be activated later

Definition at line 219 of file depend-inject.hpp.

Inheritance diagram for DependInject< SRV >::ServiceInstance< IMP >:

Collaboration diagram for DependInject< SRV >::ServiceInstance< IMP >:

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The documentation for this class was generated from the following file:

• depend-inject.hpp