kdb::Context Class Reference

Provides a context for configuration. More...

#include <kdbcontext.hpp>

Inherits kdb::Subject.

Inherited by kdb::ThreadContext.

Public Member Functions
std::string	operator[] (std::string const &layer) const
	Lookup value for a current active layer. More...
size_t	size () const
void	attachByName (std::string const &key_name, ValueObserver &observer)
	Attach observer using to all events given by its specification (name) More...
std::string	evaluate (std::string const &key_name) const
	Evaluate a specification (name) and return a key name under current context. More...
std::string	evaluate (std::string const &key_name, std::function< bool(std::string const &, std::string &, bool in_group)> const &on_layer) const
	Evaluate specification with this context. More...
template<typename T , typename... Args>
std::shared_ptr< Layer >	activate (Args &&... args)
	Globally activate the layer. More...

Detailed Description

Provides a context for configuration.

Is a subject for observers.

Holds currently active layers and allows global/scoped activation of layers.

Member Function Documentation

activate()

template<typename T , typename... Args>

std::shared_ptr<Layer> kdb::Context::activate ( Args &&...  args )

inline

Globally activate the layer.

Template Parameters

T	the layer to activate
Args	the types for the arguments to pass to layer construction

Parameters

args	the arguments to pass to layer construction

attachByName()

void kdb::Context::attachByName ( std::string const &  key_name, ValueObserver &  observer  )

inline

Attach observer using to all events given by its specification (name)

Parameters

key_name	the name with placeholders to be used for attaching
observer	the observer to attach to

evaluate() [1/2]

std::string kdb::Context::evaluate ( std::string const &  key_name ) const

inline

Evaluate a specification (name) and return a key name under current context.

Parameters

key_name

the name with placeholders to be evaluated

evaluate() [2/2]

std::string kdb::Context::evaluate ( std::string const &  key_name, std::function< bool(std::string const &, std::string &, bool in_group)> const &  on_layer  ) const

inline

Evaluate specification with this context.

Parameters

key_name	the keyname with placeholders to evaluate
on_layer	the function to be called for every placeholder found

on_layer is called for every layer in the

specification.

Returns

the evaluated string

operator[]()

std::string kdb::Context::operator[] ( std::string const &  layer ) const

inline

Lookup value for a current active layer.

Parameters

layer

the name of the requested layer

Returns

the layer

size()

size_t kdb::Context::size ( ) const

inline

Returns

size of all current layers (to be used with operator[])

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

• kdbcontext.hpp