NoMap< OutputType > Class Template Reference

Identity map (aka, NoMap). More...

#include <keyvalue/key/map/NoMap.h>

List of all members.

Public Types
typedef OutputType	OutputType_
Public Member Functions
OutputType	map (const value::Variant &variant) const
	Performs the mapping.
Private Member Functions
virtual string	getName () const =0
	Gets Key's name.
	BOOST_STATIC_ASSERT (util::IsBasic< OutputType >::value)

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Detailed Description

template<typename OutputType>
class keyvalue::key::NoMap< OutputType >

Identity map (aka, NoMap).

The input value is mapped to itself. For example, the value associated to key "Price" is supposed to be a double which must be passed on, without any kind of mapping or, in other terms, mapped by the identity function.

Remark: Only instantiations for Output equal to bool, double, ptime, string or unsigned int are provided.

Parameters:

OutputType

: (template parameter) Output type.

Return values:

OutputType_

: Same as OutputType.

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Member Function Documentation

OutputType map

(

const value::Variant &

variant

)

const

Performs the mapping.

This method retrieves the content of value::Variant and, by considering enabled lexical conversions, converts it to Output. (See LexicalToolKit documentation.)

Parameters:

variant

: A value::Variant containing the input to be mapped.

Returns:

The mapping result.

virtual string getName

(

)

const [private, pure virtual]

Gets Key's name.

Returns:

The Key's name.