A factory that generates a component based on a string type. More...

#include <Factory.hh>

Public Member Functions
	Factory ()=default

	Factory (const Factory &)=delete

	Factory (Factory &)=delete

bool	HasType (ComponentTypeId _typeId)
	Check if a component type has been registered. return True if registered. More...

std::string	Name (ComponentTypeId _typeId) const
	Get a component's type name given its type ID. return Unique component name. More...

template<typename ComponentTypeT >
std::unique_ptr< ComponentTypeT >	New ()
	Create a new instance of a component. More...

std::unique_ptr< components::BaseComponent >	New (const ComponentTypeId &_type)
	Create a new instance of a component. More...

std::unique_ptr< components::BaseComponent >	New (const ComponentTypeId &_type, const components::BaseComponent *_data)
	Create a new instance of a component, initialized with particular data. More...

template<typename ComponentTypeT >
void	Register (const std::string &_type, ComponentDescriptorBase *_compDesc)
	Register a component so that the factory can create instances of the component based on an ID. More...

template<typename ComponentTypeT >
void	Register (const std::string &_type, ComponentDescriptorBase *_compDesc, RegistrationObjectId _regObjId)
	Register a component so that the factory can create instances of the component based on an ID. More...

std::vector< ComponentTypeId >	TypeIds () const
	Get all the registered component types by ID. return Vector of component IDs. More...

template<typename ComponentTypeT >
void	Unregister ()
	Unregister a component so that the factory can't create instances of the component anymore. More...

void	Unregister (ComponentTypeId _typeId)
	Unregister a component so that the factory can't create instances of the component anymore. More...

void	Unregister (ComponentTypeId _typeId, RegistrationObjectId _regObjId)
	Unregister a component so that the factory can't create instances of the component anymore. More...

template<typename ComponentTypeT >
void	Unregister (RegistrationObjectId _regObjId)
	Unregister a component so that the factory can't create instances of the component anymore. More...

Static Public Member Functions
static Factory *	Instance ()
	Get an instance of the singleton. More...

Static Public Member Functions inherited from SingletonT< Factory >
static T *	Instance ()

Public Attributes
std::map< ComponentTypeId, std::string >	namesById
	A list of IDs and their equivalent names. More...

std::map< ComponentTypeId, std::string >	runtimeNamesById
	Keep track of the runtime names for types and warn the user if they try to register different types with the same typeName. More...

Additional Inherited Members
Protected Member Functions inherited from SingletonT< Factory >
	SingletonT ()

virtual	~SingletonT ()

Detailed Description

A factory that generates a component based on a string type.

Constructor & Destructor Documentation

◆ Factory() [1/3]

Factory ( Factory & )

delete

◆ Factory() [2/3]

Factory ( const Factory & )

delete

◆ Factory() [3/3]

Factory ( )

default

Member Function Documentation

◆ HasType()

bool HasType ( ComponentTypeId _typeId )

inline

Check if a component type has been registered. return True if registered.

◆ Instance()

static Factory* Instance ( )

static

Get an instance of the singleton.

◆ Name()

std::string Name ( ComponentTypeId _typeId ) const

inline

Get a component's type name given its type ID. return Unique component name.

References map< K, T >::at(), string::end(), map< K, T >::find(), and Factory::namesById.

◆ New() [1/3]

std::unique_ptr<ComponentTypeT> New ( )

inline

Create a new instance of a component.

Returns: Pointer to a component. Null if the component type could not be handled.

Template Parameters

ComponentTypeT component type requested

◆ New() [2/3]

std::unique_ptr<components::BaseComponent> New ( const ComponentTypeId & _type )

inline

Create a new instance of a component.

Parameters

[in] _type Component id to create.

Returns: Pointer to a component. Null if the component type could not be handled.

◆ New() [3/3]

std::unique_ptr<components::BaseComponent> New	(	const ComponentTypeId &	_type,
		const components::BaseComponent *	_data
	)

inline

Create a new instance of a component, initialized with particular data.

Parameters

[in]	_type	Component id to create.
[in]	_data	The data to populate the component instance with.

Returns: Pointer to a component. Null if the component type could not be handled.

References std::endl(), gzerr, and BaseComponent::TypeId().

◆ Register() [1/2]

void Register	(	const std::string &	_type,
		ComponentDescriptorBase *	_compDesc
	)

inline

Register a component so that the factory can create instances of the component based on an ID.

Parameters

[in]	_type	Type of component to register.
[in]	_compDesc	Object to manage the creation of ComponentTypeT objects.

Template Parameters

ComponentTypeT Type of component to register.

◆ Register() [2/2]

void Register	(	const std::string &	_type,
		ComponentDescriptorBase *	_compDesc,
		RegistrationObjectId	_regObjId
	)

inline

Register a component so that the factory can create instances of the component based on an ID.

Parameters

[in]	_type	Type of component to register.
[in]	_compDesc	Object to manage the creation of ComponentTypeT objects.
[in]	_regObjId	An ID that identifies the registration object. This is generally derived from the `this` pointer of the static component registration object created when calling GZ_SIM_REGISTER_COMPONENT.

Template Parameters

ComponentTypeT Type of component to register.

References map< K, T >::end(), std::endl(), gz::common::env(), map< K, T >::find(), gz::common::hash64(), Factory::namesById, and Factory::runtimeNamesById.

◆ TypeIds()

std::vector<ComponentTypeId> TypeIds ( ) const

inline

Get all the registered component types by ID. return Vector of component IDs.

References vector< T >::push_back().

◆ Unregister() [1/4]

void Unregister ( )

inline

Unregister a component so that the factory can't create instances of the component anymore.

Template Parameters

ComponentTypeT Type of component to unregister.

Referenced by Factory::Unregister().

◆ Unregister() [2/4]

void Unregister ( ComponentTypeId _typeId )

inline

Unregister a component so that the factory can't create instances of the component anymore.

This function will not reset the typeId static variable within the component type itself. Prefer using the templated Unregister function when possible.

Parameters

[in] _typeId Type of component to unregister.

References Factory::Unregister().

◆ Unregister() [3/4]

void Unregister	(	ComponentTypeId	_typeId,
		RegistrationObjectId	_regObjId
	)

inline

Unregister a component so that the factory can't create instances of the component anymore.

This function will not reset the typeId static variable within the component type itself. Prefer using the templated Unregister function when possible.

Parameters

[in]	_typeId	Type of component to unregister.
[in]	_regObjId	An ID that identifies the registration object. This is generally derived from the `this` pointer of the static component registration object created when calling GZ_SIM_REGISTER_COMPONENT.

◆ Unregister() [4/4]

void Unregister ( RegistrationObjectId _regObjId )

inline

Unregister a component so that the factory can't create instances of the component anymore.

Template Parameters

ComponentTypeT Type of component to unregister.

Parameters

[in] _regObjId An ID that identifies the registration object. This is generally derived from the this pointer of the static component registration object created when calling GZ_SIM_REGISTER_COMPONENT.

References Factory::Unregister().