cmnSerializer Class Reference

Serialization utility class.This class allows to serialize objects of different types (all derived from cmnGenericObject) as well as the information required to deserialize them (see cmnDeSerializer) to and from an STL output stream. More...

#include <cmnSerializer.h>

Inheritance diagram for cmnSerializer:

Public Types
typedef unsigned long long int	TypeId

Public Member Functions
	cmnSerializer (std::ostream &outputStream)
	~cmnSerializer ()
bool	ServicesSerialized (const cmnClassServicesBase *servicesPointer) const
void	Reset (void)
void	Serialize (const cmnGenericObject &object, const bool serializeObject=true)
void	SerializeServices (const cmnClassServicesBase *servicesPointer)
Public Member Functions inherited from cmnGenericObject
virtual	~cmnGenericObject (void)
virtual const cmnClassServicesBase *	Services (void) const =0
bool	ReconstructFrom (const cmnGenericObject &other)
std::string	ToString (void) const
virtual void	ToStream (std::ostream &outputStream) const
virtual void	ToStreamRaw (std::ostream &outputStream, const char delimiter= ' ', bool headerOnly=false, const std::string &headerPrefix="") const
virtual bool	FromStreamRaw (std::istream &inputStream, const char delimiter= ' ')
virtual void	SerializeRaw (std::ostream &outputStream) const
virtual void	DeSerializeRaw (std::istream &inputStream)
virtual cmnLogger::StreamBufType *	GetLogMultiplexer (void) const
virtual size_t	ScalarNumber (void) const
virtual bool	ScalarNumberIsFixed (void) const
virtual double	Scalar (const size_t CMN_UNUSED(index)) const throw (std::out_of_range)
virtual std::string	ScalarDescription (const size_t CMN_UNUSED(index), const std::string &CMN_UNUSED(userDescription)) const

Detailed Description

Serialization utility class.

This class allows to serialize objects of different types (all derived from cmnGenericObject) as well as the information required to deserialize them (see cmnDeSerializer) to and from an STL output stream.

The result is a sequence of class informations (i.e. class name as a string and unique identifier) and objects. Each object is sent preceeded by its unique class identifier and class information is preceeded by a 0. This allows cmnDeSerializer to determine what is currently deserialized.

The unique identifer used is the address of the object cmnClassServices associated to each class.

When an object needs to be serialized, the method Serialize will first verify that the class information (name and identifier) has already been serialized. If this is not the case, it will serialize the class information and then the object itself.

See Also

cmnDeSerializer cmnGenericObject

Member Typedef Documentation

typedef unsigned long long int cmnSerializer::TypeId

Type used to identify objects over the network. It uses the services pointer but as the sender or receiver could be a 32 or 64 bits OS, we use a data type that can handle both.

Constructor & Destructor Documentation

cmnSerializer::cmnSerializer

(

std::ostream &

outputStream

)

Constructor.

Parameters

outputStream

any stream derived from std::ostream. The output stream must be created with the open flag std::ostream::binary.

cmnSerializer::~cmnSerializer

(

)

Destructor

Member Function Documentation

void cmnSerializer::Reset

(

void

)

Reset the list of types already sent.

void cmnSerializer::Serialize	(	const cmnGenericObject &	object,
		const bool	serializeObject = true
	)

Serialize an object. This method will first verify that the information (cmnClassServices) related to the class of the object has been serialized using SerializeServices. Once this is done, it will serialize the class identifier (pointer on the class information, see cmnClassServices and cmnClassRegister) and finally call the object's method SerializeRaw.

Parameters

object	An object of a class derived from cmnGenericObject. The class of the object must have the virtual method SerializeRaw re-defined to properly serialize the content of the object.
serializeObject	If true, object content is serialized. If false, only class services is serialized and object content is not serialized. True by default.

Note

As this method relies on cmnSerializeRaw, it might throw an exception.

void cmnSerializer::SerializeServices

(

const cmnClassServicesBase *

servicesPointer

)

Serialize the class information if needed. This method will write the class name (as an STL string) and the type identifier used on the serialization end to the output stream. The type identifier used is the address of the class services object (cmnClassServices). To avoid sending the same information multiple times, this class (cmnSerializer) maintains a list of the class identifier already sent.

It is important to note that a regular user doesn't need to use this method as the Serialize method performs this task. It is provided for advanced users who need or want to serialize all the class information first and then serialize their objects. This can be used to avoid time delays while serializing and de-serializing objects.

Parameters

servicesPointer

Pointer on object cmnClassServices. Use cmnClassRegister::FindClassServices, className::Services() or object.Services() to retrieve the correct pointer.

Note

As this method relies on cmnSerializeRaw, it might throw an exception.

bool cmnSerializer::ServicesSerialized

(

const cmnClassServicesBase *

servicesPointer

)

const

Returns true if the services have already been serialized.

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

• /home/adeguet1/catkin_ws/src/cisst-saw/cisst/cisstCommon/cmnSerializer.h