Nullable< valueType > Class Template Reference

Generic class to add Nullable on Simple type More...

Detailed Description

template<class valueType>
class ConceptRT::Nullable< valueType >

Generic class to add Nullable on Simple type

Template Parameters

valueType

Type of the nullable value.

Inheritance diagram for Nullable< valueType >:

Public Member Methods
	Nullable ()
	Default constructor. More...
	Nullable (valueType value)
	Default constructor. More...
	Nullable (const NullableNullClass &value)
	Default constructor. More...
Nullable< valueType > &	operator= (valueType right)
	Assignment operator. More...
Nullable< valueType > &	operator= (const NullableNullClass &right)
	Assignment operator. More...
	operator const valueType & () const
	valueType& casting operator. More...
	operator valueType & ()
	valueType& casting operator. More...
bool	HasValue () const
	Query if the nullable has a value (!= NULL) More...
const valueType &	GetValue () const
	Get the value More...
valueType &	GetValue ()
	Get the value More...
void	SetNull ()
	Set the nullable to null. More...
void	ConvertFrom (PCChar8 text)
	Convert from. More...
void	ConvertTo (BaseStaticString &text) const
	Convert to. More...

Constructor & Destructor Documentation

Nullable ( )

inline

Default constructor.

Nullable ( valueType  value )

inline

Default constructor.

Parameters

value

The value.

Nullable ( const NullableNullClass &  value )

inline

Default constructor.

Parameters

value

The value.

Methods Documentation

void ConvertFrom ( PCChar8  text )

virtual

Convert from.

Parameters

text	The text. Use CONCEPTRT_NULL_STRING to specify null.

Implements IStringConvertible.

void ConvertTo ( BaseStaticString &  text ) const

virtual

Convert to.

Parameters

text	[in,out] The text.

Implements IStringConvertible.

const valueType& GetValue ( ) const

inline

Get the value

Exceptions

RTException

Cannot access not defined nullable

Returns

the nullable value.

RT Exceptions:

RT_ERROR_NULLABLE_ACCES_ON_NULL

valueType& GetValue ( )

inline

Get the value

Exceptions

RTException

Cannot access not defined nullable

Returns

the nullable value.

RT Exceptions:

RT_ERROR_NULLABLE_ACCES_ON_NULL

bool HasValue ( ) const

inline

Query if the nullable has a value (!= NULL)

Returns

True if the nullable has a value.

operator const valueType & ( ) const

inline

valueType& casting operator.

Returns

The result of the operation.

operator valueType & ( )

inline

valueType& casting operator.

Nullable<valueType>& operator= ( valueType  right )

inline

Assignment operator.

Parameters

right

The right.

Returns

A shallow copy of this object.

Nullable<valueType>& operator= ( const NullableNullClass &  right )

inline

Assignment operator.

Parameters

right

The right.

Returns

A shallow copy of this object.

void SetNull ( )

inline

Set the nullable to null.