Factory Class Reference

A factory that generates protobuf message based on a string type. This allows for global registration of messages via static initialization. If you don't need the singleton, consider using MessageFactory instead. More...

#include <gz/msgs.hh>

Public Types
using	FactoryFn = MessageFactory::FactoryFn
	Function that returns unique pointer to base message type.
using	FactoryFnCollection = MessageFactory::FactoryFnCollection
	A map of message types as strings to factory functions.
using	MessagePtr = MessageFactory::MessagePtr
	Unique pointer to base message type.

Public Member Functions
	Factory (const Factory &)=delete
	Deleted copy constructor.
	Factory (Factory &&)=delete
	Deleted move constructor.
void	operator= (const Factory &)=delete
	Deleted copy assignment.
void	operator= (Factory &&)=delete
	Deleted move assignment.

Static Public Member Functions
static MessageFactory &	Instance ()
	Get the global MessageFactory instance.
static void	LoadDescriptors (const std::string &_paths)
	Load a collection of descriptor .desc files.
template<typename T >
static std::unique_ptr< T >	New (const std::string &_msgType)
	Create a new instance of a message.
static MessagePtr	New (const std::string &_msgType)
	Create a new instance of a message.
template<typename T >
static std::unique_ptr< T >	New (const std::string &_msgType, const std::string &_args)
	Create a new instance of a message.
static MessagePtr	New (const std::string &_msgType, const std::string &_args)
	Create a new instance of a message.
static void	Register (const std::string &_msgType, FactoryFn _factoryfn)
	Register a message.
static void	Types (std::vector< std::string > &_types)
	Get all the message types.

Detailed Description

A factory that generates protobuf message based on a string type. This allows for global registration of messages via static initialization. If you don't need the singleton, consider using MessageFactory instead.

Member Typedef Documentation

FactoryFn

using FactoryFn = MessageFactory::FactoryFn

Function that returns unique pointer to base message type.

FactoryFnCollection

using FactoryFnCollection = MessageFactory::FactoryFnCollection

A map of message types as strings to factory functions.

MessagePtr

using MessagePtr = MessageFactory::MessagePtr

Unique pointer to base message type.

Constructor & Destructor Documentation

Factory() [1/2]

Factory ( const Factory &  )

delete

Deleted copy constructor.

Factory() [2/2]

Factory ( Factory &&  )

delete

Deleted move constructor.

Member Function Documentation

Instance()

static MessageFactory & Instance ( )

static

Get the global MessageFactory instance.

Returns

Reference to the global MessageFactory instance

Referenced by Factory::New(), and Factory::New().

LoadDescriptors()

static void LoadDescriptors ( const std::string &  _paths )

static

Load a collection of descriptor .desc files.

Parameters

[in]

_paths

A set of directories containing .desc decriptor files. Each directory should be separated by ":".

New() [1/4]

template<typename T >

static std::unique_ptr< T > New ( const std::string &  _msgType )

inlinestatic

Create a new instance of a message.

Parameters

[in]

_msgType

Type of message to create.

Returns

Pointer to a google protobuf message. Null if the message type could not be handled.

References Factory::Instance(), and MessageFactory::New().

New() [2/4]

static MessagePtr New ( const std::string &  _msgType )

static

Create a new instance of a message.

Parameters

[in]

_msgType

Type of message to create.

Returns

Pointer to a google protobuf message. Null if the message type could not be handled.

New() [3/4]

template<typename T >

static std::unique_ptr< T > New ( const std::string &  _msgType, const std::string &  _args  )

inlinestatic

Create a new instance of a message.

Parameters

[in]	_msgType	Type of message to create.
[in]	_args	Message arguments. This will populate the message.

Returns

Pointer to a google protobuf message. Null if the message type could not be handled.

References Factory::Instance(), and MessageFactory::New().

New() [4/4]

static MessagePtr New ( const std::string &  _msgType, const std::string &  _args  )

static

Create a new instance of a message.

Parameters

[in]	_msgType	Type of message to create.
[in]	_args	Message arguments. This will populate the message.

Returns

Pointer to a google protobuf message. Null if the message type could not be handled.

operator=() [1/2]

void operator= ( const Factory &  )

delete

Deleted copy assignment.

operator=() [2/2]

void operator= ( Factory &&  )

delete

Deleted move assignment.

Register()

static void Register ( const std::string &  _msgType, FactoryFn  _factoryfn  )

static

Register a message.

Parameters

[in]	_msgType	Type of message to register.
[in]	_factoryfn	Function that generates the message.

Types()

static void Types ( std::vector< std::string > &  _types )

static

Get all the message types.

Parameters

[out]

_types

Vector of strings of the message types.

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

• Factory.hh